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Car Forum / Honda Cars / June 2006

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Where is my oil disappearing to?

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BE - 23 Apr 2006 14:24 GMT
My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
couple months ago the oil light came on - I immediately shut the vehicle off
and ended up adding 3 quarts of oil. I checked it again the other day and
had to add half a quart.

This engine only has 41K miles. It does not put out blue smoke; there are no
oil spots in our garage. Don't tell me that this can possibly be normal
consumption???  Where could this oil be going?

Thanks,
Be
Elle - 23 Apr 2006 14:27 GMT
Have you thoroughly inspected the exterior of the engine?
Especially right beneath the valve cover and distributor?

> My 2001 Odyssey is consuming oil at what I think is an
> alarming rate. A
[quoted text clipped - 9 lines]
> possibly be normal
> consumption???  Where could this oil be going?
Elle - 23 Apr 2006 14:44 GMT
Oops--Is the 2001 Odyssey distributor-less? If so, of course
strike that second part below.

> Have you thoroughly inspected the exterior of the engine?
> Especially right beneath the valve cover and distributor?
[quoted text clipped - 12 lines]
>> possibly be normal
>> consumption???  Where could this oil be going?
duckbill - 23 Apr 2006 15:03 GMT
I would suggest a visit to the dealer, get an estimate, and then call Honda
Customer Service.  Honda has a tremendous reputation for quality and I
would see what they would consider doing on your behalf. Be polite, but
firm about this issue.  Has the van ever overheated and are you the
original owner?  Good luck.  
Woody - 23 Apr 2006 23:15 GMT
If you think Honda has a tremendous reputation for quality you haven't been
keeping up on the Odyssey, especially the 99-01 models. Other than
transmission failures, EGR blockage, motor mount failure, Catalytic
converter failure and a few others the quality stinks. It wasn't stated how
many miles for the oil consumption but it is going to take some diagnosis to
determine what is causing it. A little more than my crystal ball can
determine......

>I would suggest a visit to the dealer, get an estimate, and then call Honda
> Customer Service.  Honda has a tremendous reputation for quality and I
> would see what they would consider doing on your behalf. Be polite, but
> firm about this issue.  Has the van ever overheated and are you the
> original owner?  Good luck.
duckbill - 24 Apr 2006 01:04 GMT
Woody, I stand behind my comment about Honda Quality.  Yes they do have
transmission failures, but did Honda extend the warranty?  If the problem
is a Honda design or maufacturing problem, I bet they will assist the
customer.  I have yet to see an Ody in the junk yard and Consumer Reports
rates the Odyssey as a "CR Good Bets" on page 80 of its 2006 Annual Auto
Issue.  The Ody is not perfect but you could do a lot worse.
Jason - 24 Apr 2006 01:41 GMT
In article
<a41422c30183a1ba9b462ceaaac2b698@localhost.talkaboutautos.com>,

> Woody, I stand behind my comment about Honda Quality.  Yes they do have
> transmission failures, but did Honda extend the warranty?  If the problem
> is a Honda design or maufacturing problem, I bet they will assist the
> customer.  I have yet to see an Ody in the junk yard and Consumer Reports
> rates the Odyssey as a "CR Good Bets" on page 80 of its 2006 Annual Auto
> Issue.  The Ody is not perfect but you could do a lot worse.

All car companies have troubles related to some models. The question is
related to how the car companies handle these issues. Based upon my
experiece with a Dodge Ram 50 pickup truck and 2 Honda Accords--it's my
opinion that Honda does a much better job than the Chrysler Inc. in
relation to how they handled problems that I have had. Of course, Chrysler
has now been taken over by Mercedes so they may now be doing a much better
job dealing with customer complaints.
Jason

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High Tech Misfit - 24 Apr 2006 01:22 GMT
> If you think Honda has a tremendous reputation for quality you haven't been
> keeping up on the Odyssey, especially the 99-01 models. Other than
> transmission failures, EGR blockage, motor mount failure, Catalytic
> converter failure and a few others the quality stinks.

Obviously you haven't been keeping up on reality.  At least Honda has
acknowledged these problems and have been working to fix them.  Do you
expect the big 3 to do the same?  Of course not!  Unlike the big 3, Honda
remains committed to quality.
BE - 24 Apr 2006 02:31 GMT
The van has never overheated; I am the original owner; I also have an
extended warranty.

Be

On 4/23/06 9:03 AM, in article
8b5941a40f570176841111c214475526@localhost.talkaboutautos.com, "duckbill"
<ltcauth13@nospam.cs.com> wrote:

> I would suggest a visit to the dealer, get an estimate, and then call Honda
> Customer Service.  Honda has a tremendous reputation for quality and I
> would see what they would consider doing on your behalf. Be polite, but
> firm about this issue.  Has the van ever overheated and are you the
> original owner?  Good luck.
duckbill - 23 Apr 2006 15:15 GMT
Another thought.....are you sure the right amount of oil was put in at your
last oil change? Also, sometimes a shop or person could accidently leave
the old oil filter gasket on the engine and get a massive leak there. I
know of shops/people that have done all of these things. I would be
getting a new oil filter to be in the safe side.  How often were you
checking your oil prior to the oil light? There are souls out there that
only check oil when the light lights.    
Michael Pardee - 23 Apr 2006 15:21 GMT
> My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
> couple months ago the oil light came on - I immediately shut the vehicle
[quoted text clipped - 9 lines]
> Thanks,
> Be

I hate to suggest this, but it could be a bad ring. A few years ago we were
seeing several posts of low-mileage Hondas suddenly consuming quarts of oil
a month. Most remained a mystery, but one sufferer under warranty persisted
and the dealer tore down the engine to find a broken ring in one cylinder. I
don't know if it showed up on a compression check, or if it was a
compression ring or oil control ring. I don't think I've ever heard of
broken oil control rings, though.

I believe the catalytic converters prevent the exhaust from smoking even
with significant oil burning.

Mike
jim beam - 23 Apr 2006 23:12 GMT
>>My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
>>couple months ago the oil light came on - I immediately shut the vehicle
[quoted text clipped - 22 lines]
>
> Mike

i second that. broken rings a good candidate.
'Curly Q. Links' - 23 Apr 2006 18:01 GMT
> My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
> couple months ago the oil light came on - I immediately shut the vehicle off
[quoted text clipped - 7 lines]
> Thanks,
> Be

------------------------------------

Change your PCV with a HONDA original part, and check your oil as often
as the manual says.

'Curly'
Al - 23 Apr 2006 19:49 GMT
So, a "couple of months ago" you ran your engine with zero oil pressure
(the light came on) for at best only a few seconds.  You dumped in 3
quarts of oil, and then several months later decided to give it a check
(wow amazing - you must be a real maintenance freak).  How many miles do
you drive in "a couple of months"?

You should change the oil and filter now with a quality oil of the
weight specified by Honda.  Then record your odometer reading and check
the oil once a week.  You need to know how many miles it takes to use a
half a quart, not how long.

> My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
> couple months ago the oil light came on - I immediately shut the vehicle off
[quoted text clipped - 7 lines]
> Thanks,
> Be
BE - 24 Apr 2006 02:38 GMT
How much do I drive in a couple months?  Well, here's the math. The car is
one-owner and has been mine for 58 months. It has 41000 miles. That's a
shade less than 707 miles per month.... Not an amount that should scare me
into checking it weekly, at least not (in my opinion) when a car with
Honda's good reputation behind it has less miles on it than some people
drive in 18 months.

Be

On 4/23/06 1:49 PM, in article I_P2g.60$oz4.27@fe10.lga, "Al"
<XnospamX@optonline.net> wrote:

> So, a "couple of months ago" you ran your engine with zero oil pressure
> (the light came on) for at best only a few seconds.  You dumped in 3
[quoted text clipped - 18 lines]
>> Thanks,
>> Be
Gordon McGrew - 24 Apr 2006 05:20 GMT
>How much do I drive in a couple months?  Well, here's the math. The car is
>one-owner and has been mine for 58 months. It has 41000 miles. That's a
>shade less than 707 miles per month.... Not an amount that should scare me
>into checking it weekly, at least not (in my opinion) when a car with
>Honda's good reputation behind it has less miles on it than some people
>drive in 18 months.

So it sounds like it is consuming a quart every 2800 miles.  Probably
more than average but not an alarming amount.  You are lucky (and wise
to have stopped driving as soon as the light came on.)  It is common
that cars which didn't really have an oil consumption problem before
they got too low, do have a problem afterwards.

Either it wasn't properly filled at the previous oil change, or you
drove it about 8400 miles after an oil  change without checking it.
You don't have to check it every week, but you do have to check it
periodically.  Once a month is good if you aren't having problems.
Jason - 24 Apr 2006 18:26 GMT
> How much do I drive in a couple months?  Well, here's the math. The car is
> one-owner and has been mine for 58 months. It has 41000 miles. That's a
[quoted text clipped - 4 lines]
>
> Be

Be,
It's my guess that the the rings are starting to wear. A compression check
during the next scheduled oil change service should reveal any serious
problems related to the rings. You may also want to have a tune-up in case
the valves, timing, etc need to be adjusted. If you have a oil change and
the oil becomes black within two weeks--that could be a sign of a bad head
gasket. I advise you to check the oil about once a week in order to check
the level and the color of the oil. Keep a record of the results.
Jason

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BE - 01 May 2006 18:18 GMT
On 4/24/06 12:26 PM, in article
jason-2404061026550001@66-52-22-63.lsan.pw-dia.impulse.net, "Jason"
<jason@nospam.com> wrote:

>> How much do I drive in a couple months?  Well, here's the math. The car is
>> one-owner and has been mine for 58 months. It has 41000 miles. That's a
[quoted text clipped - 14 lines]
> the level and the color of the oil. Keep a record of the results.
> Jason

I checked the oil again Saturday and had to add another quart to bring it to
full. I took note of the mileage and will be ready with a hard number of
miles driven when I add the next quart.

I think the advice here has been valuable and suspect the rings problem now
due to the input given. I'll let you all know how this turns out.

Thanks!
Be
Michael Pardee - 01 May 2006 19:54 GMT
> On 4/24/06 12:26 PM, in article
>
[quoted text clipped - 9 lines]
> Thanks!
> Be

Yup - that's what it is sounding like. Best of luck to you.

Mike
BE - 28 May 2006 18:10 GMT
On 4/24/06 12:26 PM, in article
jason-2404061026550001@66-52-22-63.lsan.pw-dia.impulse.net, "Jason"
<jason@nospam.com> wrote:

>> How much do I drive in a couple months?  Well, here's the math. The car is
>> one-owner and has been mine for 58 months. It has 41000 miles. That's a
[quoted text clipped - 14 lines]
> the level and the color of the oil. Keep a record of the results.
> Jason

I checked the oil again Saturday and had to add another quart to bring it to
full. I took note of the mileage and will be ready with a hard number of
miles driven when I add the next quart.

I think the advice here has been valuable and suspect the rings problem now
due to the input given. I'll let you all know how this turns out.

Thanks!
Be

===============================

OK - here is what I found. I filled the oil to full and took an odometer
reading. Some three weeks [667 miles] later, I needed to add 3/4 of a quart
to bring it back to full again. You could extrapolate that out to say that
for every 900 miles a quart is being consumed.

Be
Gordon McGrew - 28 May 2006 23:03 GMT
>On 4/24/06 12:26 PM, in article
>jason-2404061026550001@66-52-22-63.lsan.pw-dia.impulse.net, "Jason"
[quoted text clipped - 37 lines]
>
>Be

That's a problem.  File a warranty claim.
BE - 31 May 2006 01:11 GMT
On 5/28/06 5:03 PM, in article 8g7k72927bc1unje5cb8oe4hvp79qe1oja@4ax.com,

>> On 4/24/06 12:26 PM, in article
>> jason-2404061026550001@66-52-22-63.lsan.pw-dia.impulse.net, "Jason"
[quoted text clipped - 39 lines]
>
> That's a problem.  File a warranty claim.

Took it to the Honda dealer today. The service rep claims that what I am
experiencing is 'normal' oil consumption. He cites some technical bulletin
written in 1988 that gives validity to the notion that a quart of oil lost
every 1000 miles is normal. I just spoke to Honda at their toll-free
customer service number and they are also claiming that this is their spec.
They are not willing to open the engine unless I foot the bill.

What to do now?  My inclination is to let an authorized Honda service center
do an oil change and not add any oil for the next 3500 miles, letting the
engine burn up. I only hope that it doesn't choose to fail when I'm in it
with the family on a tall highway bridge. My warranty doesn't obligate me to
top it off between oil changes.

Be


'Curly Q. Links' - 31 May 2006 03:30 GMT
My warranty doesn't obligate me to top it off between oil changes.

--------------------------------

Hmmmmmmm. Careful . . . . Even lawyers can read the Owner's Manual.

'Curly'
Eric - 31 May 2006 08:02 GMT
> Took it to the Honda dealer today. The service rep claims that what I am
> experiencing is 'normal' oil consumption. He cites some technical bulletin
[quoted text clipped - 8 lines]
> when I'm in it with the family on a tall highway bridge. My warranty
> doesn't obligate me to top it off between oil changes.

That's funny.  My '88 Civic with 244,800 miles on it uses less than 0.25
quarts in 3000 miles.  Moreover, a service bulletin written in 1988 is not
going to be applicable to a newer car.  How could they have known what
problems a 2005 model, for example, was going to have in 1988?!?!?

You may need to get someone to be your advocate and deal with Honda.  I
would take your car to a well respected independent Honda shop in your area
and have them change the oil and then document the consumption (and absence
of leaks).  Then have them deal with Honda for you if they are willing,
e.g., you've been or will be a good customer of that particular shop.
Moreover, sometimes it's best to skip the dealer and go direct to Honda's
customer relations.

http://automobiles.honda.com/info/customer_relations.asp?bhjs=0

Eric
BE - 31 May 2006 15:18 GMT
On 5/31/06 2:02 AM, in article 447D3F95.8F55E481@spam.now, "Eric"
<say.no@spam.now> wrote:

>> Took it to the Honda dealer today. The service rep claims that what I am
>> experiencing is 'normal' oil consumption. He cites some technical bulletin
[quoted text clipped - 25 lines]
>
> Eric
That toll free number is what I called yesterday (see above) and where I got
the party line on 1000 miles / per quart being OK to lose.

Be
Gordon McGrew - 02 Jun 2006 06:45 GMT
>On 5/28/06 5:03 PM, in article 8g7k72927bc1unje5cb8oe4hvp79qe1oja@4ax.com,
>
[quoted text clipped - 48 lines]
>customer service number and they are also claiming that this is their spec.
>They are not willing to open the engine unless I foot the bill.

But your consumption exceeds the "normal" rate.

>What to do now?  My inclination is to let an authorized Honda service center
>do an oil change and not add any oil for the next 3500 miles, letting the
>engine burn up. I only hope that it doesn't choose to fail when I'm in it
>with the family on a tall highway bridge. My warranty doesn't obligate me to
>top it off between oil changes.

Actually, I'm pretty sure it does.  You are required to properly
maintain the vehicle.  Checking and adding oil is routine maintenance.
Read your owners manual.  

Much better that you insist they document oil consumption by topping
it off and having you drive it for 1000 miles.  If it takes more than
a quart to bring it back up to full, then your consumption exceeds the
limits of normal and repair is needed.
BE - 02 Jun 2006 23:04 GMT
On 6/2/06 12:45 AM, in article qmjv72du37n95cqj8pm7g6h9idefkuo712@4ax.com,

>> On 5/28/06 5:03 PM, in article 8g7k72927bc1unje5cb8oe4hvp79qe1oja@4ax.com,
>>
[quoted text clipped - 68 lines]
> a quart to bring it back up to full, then your consumption exceeds the
> limits of normal and repair is needed.

Well, that's what I did - I got them to do an oil change and documented the
miles. One thing they found was that the washer on the oil drain plug was
incorrect - a thin substitute for the thicker Honda part was in place. I
guess one of the other oil change places I took the van to put the wrong one
back on. I don't know if this could have had any role in the oil loss...

Be
Eric - 03 Jun 2006 07:36 GMT
> > Much better that you insist they document oil consumption by topping
> > it off and having you drive it for 1000 miles.  If it takes more than
[quoted text clipped - 7 lines]
> wrong one back on. I don't know if this could have had any role in the
> oil loss...

Do you see oil drips where you park, e.g., garage, driveway, etc.?

Eric
BE - 03 Jun 2006 23:28 GMT
On 6/3/06 1:36 AM, in article 44812DEE.6F4B9642@spam.now, "Eric"
<say.no@spam.now> wrote:

>>> Much better that you insist they document oil consumption by topping
>>> it off and having you drive it for 1000 miles.  If it takes more than
[quoted text clipped - 11 lines]
>
> Eric

No drips anywhere. We have a new, clean garage floor (since 2005) that has
not a drop upon it.

Be
Gordon McGrew - 03 Jun 2006 16:04 GMT
>> Much better that you insist they document oil consumption by topping
>> it off and having you drive it for 1000 miles.  If it takes more than
[quoted text clipped - 6 lines]
>guess one of the other oil change places I took the van to put the wrong one
>back on. I don't know if this could have had any role in the oil loss...

An incorrect washer might cause a leak problem but won't change oil
consumption.  you would have to be making a huge mess for a leak to
cause measurable oil loss.  Be aware that the correct washer is called
a crush washer because it is crushed when installed and should be
thinner when removed than before it was installed.  That is why it
should be replaced each time.

If I understand correctly, the dealer has measured and acknowledged
that your consumption is greater than 1 qt./1000 mi.  Hopefully you
have this documented in writing.  If the dealer does acknowledge that
the engine needs repair, insist on talking to the Honda rep.  The 1000
mile standard is barely justifiable as it is.  Even being near it
should merit at least consideration for a warranty claim.  If you are
over it, even by just a little, they should fix it.  
BE - 03 Jun 2006 23:27 GMT
On 6/3/06 10:04 AM, in article ne8382dqfnoql35i86mjbhdbkmd4amckh2@4ax.com,

>>> Much better that you insist they document oil consumption by topping
>>> it off and having you drive it for 1000 miles.  If it takes more than
[quoted text clipped - 21 lines]
> should merit at least consideration for a warranty claim.  If you are
> over it, even by just a little, they should fix it.

The mileage calculation of 900 miles per quart was made by me, therefore it
is not trusted.

Be
Gordon McGrew - 04 Jun 2006 01:26 GMT
>On 6/3/06 10:04 AM, in article ne8382dqfnoql35i86mjbhdbkmd4amckh2@4ax.com,
>
[quoted text clipped - 28 lines]
>
>Be

Well, then they have to measure it.  Ask them how they want to do
that.  In the mean time make sure they document that the customer has
reported oil consumption greater than 1qt. per 1000 miles.
JXStern - 04 Jun 2006 19:22 GMT
>The 1000 mile standard is barely justifiable as it is.

Can the car really meet modern clean air standards burning oil like
that?

My old Alfa Romeo required a quart every couple of fill-ups, but that
was a design "feature" described in the manual.

And we won't even talk about the 1960's two-cycle Saabs where you just
poured the quart right into the gas tank!

J.
MLD - 23 Apr 2006 20:15 GMT
> My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
> couple months ago the oil light came on - I immediately shut the vehicle off
[quoted text clipped - 7 lines]
> Thanks,
> Be
Daughter's Civic, 55,000 miles and just out of warranty, had the same
problem--oil didn't show up on the dip stick.  Filled the oil to the full
mark and within 250 mi it was below the dip stick again.  Because it was so
severe an oil loss, the Dealer got Honda's OK to look for the problem with
only parts to be charged.  Found some cracked carbon valve seals, replaced
them and put things back together again.  Same oil loss recurred.  Honda
authorized as complete an engine teardown as needed to find and resolve with
no further $$$ charged.  Tore the engine down and found some bad piston
rings; replaced them all and the oil loss problem went away. So she
basically ended up with a rebuilt engine *zero timed* for very little cost
to her.  Honda's response to the problem was excellent, obviously their
concern and motivation was "How many more are there out there like this,  is
there something about 55,000 mi. in this engine that we've got to worry
about and if so, what.  She got the car new and was putting about 400-500 mi
a week on it so it was probably one of the fleet leaders in mileage.
MLD
Michael Pardee - 23 Apr 2006 20:49 GMT
>> My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
>> couple months ago the oil light came on - I immediately shut the vehicle
[quoted text clipped - 29 lines]
> a week on it so it was probably one of the fleet leaders in mileage.
> MLD

Do you know if a compression test had been done prior to teardown and if the
rings were compression or oil control? I'd expect a dealer to do at least
one compression test (that probably came out okay enough) and swallow hard a
couple times before tearing an engine down.

Mike
MLD - 24 Apr 2006 12:37 GMT
> >> My 2001 Odyssey is consuming oil at what I think is an alarming rate. A
> >> couple months ago the oil light came on - I immediately shut the vehicle
[quoted text clipped - 36 lines]
>
> Mike

Don't know what the dealer did to troubleshoot--In fact, before they even
started doing anything, they actually drained and refilled the oil and sent
her on her way.  After the 250 mi  and no oil on the dip stick they became
believers. Obviously, the cracked (broken) rings were not associated with
compression, the dealer wasn't that bad.  Honda responded as well as they
did because 55,000 miles is relatively low for their engine and the need to
know if this was "one of a kind" or a symptom of "what was to come" from
that family.  BTW, she ended up with over 200,000 miles before giving the
car up.
MLD
Jason - 24 Apr 2006 18:16 GMT
> > "MLD" <MLD@verizon.net> wrote in message
> news:ZmQ2g.4048$cc.137@trndny05...
[quoted text clipped - 60 lines]
> car up.
> MLD

MLD,
In most cases, if there is a defective ring--it can be detected by a
compression check. I was surprised that the Honda mechanic did not conduct
a compression check prior to a teardown of the engine. Perhaps the
mechanic conducted a compression check and done the teardown of the engine
as a direct result of the compression check test results.
Jason

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jim beam - 25 Apr 2006 04:15 GMT
>>>"MLD" <MLD@verizon.net> wrote in message
>>
[quoted text clipped - 89 lines]
> compression check. I was surprised that the Honda mechanic did not conduct
> a compression check prior to a teardown of the engine.

if they were an experienced professional, they'd know that a broken top
ring makes the most difference to compression [and little difference to
oil consumption], the second ring, much less to compression [and a
reasonable difference to oil consumption], and the oil control rings,
none at all to compression, [but a whole ship-load to oil consumption].
 since oil loss is the the problem, and lack of compression apparently
not, what conclusions do you draw here about the efficacy of a
compression test here jason?  hint: the professional mechanics' actions
here should give you a clue.

> Perhaps the
> mechanic conducted a compression check and done the teardown of the engine
> as a direct result of the compression check test results.

dude, compression can vary quite a lot from cylinder to cylinder, and
the engine still be perfectly serviceable with little oil consumption.
i respectfully suggest you either get some training and experience under
your belt OR you stick to topics you actually /do/ know about.  thanks.

> Jason
Grumpy AuContraire - 25 Apr 2006 15:43 GMT
> >>>"MLD" <MLD@verizon.net> wrote in message
> >>
[quoted text clipped - 108 lines]
> i respectfully suggest you either get some training and experience under
> your belt OR you stick to topics you actually /do/ know about.  thanks.

Uh, all ring sets contribute to compression AND oil control.

As an example, a couple of years ago I inherited an early 1980's Mazda
B2000 P/U with about 160K miles on the odometer that was running lousy
along with oil control problems.  The reason, three pistons had broken
compression rings.

In real life, cause and effect can vary widely vs. the published word...

JT
jim beam - 26 Apr 2006 02:32 GMT
>>>>>"MLD" <MLD@verizon.net> wrote in message
>>>>
[quoted text clipped - 119 lines]
>
> JT

uh, re-read my post.  the extent of compression and oil consumpton
effect varies by ring.
Grumpy AuContraire - 26 Apr 2006 03:00 GMT
> >>>>>"MLD" <MLD@verizon.net> wrote in message
> >>>>
[quoted text clipped - 122 lines]
> uh, re-read my post.  the extent of compression and oil consumpton
> effect varies by ring.

Uh, you clearly stated that a compression ring makes little difference
as relates to oil control.  In fact, any broken compression ring will
substantially affect oil control.

Additionally, broken oil or 2nd compression rings are rare since the
malady is often caused by incorrect timing (or some other direct factor)
that leads to detonation which is the chief culprit as to ring breakage.

JT
jim beam - 26 Apr 2006 03:21 GMT
>>>>>>>"MLD" <MLD@verizon.net> wrote in message
>>>>>>
[quoted text clipped - 125 lines]
> Uh, you clearly stated that a compression ring makes little difference
> as relates to oil control.

there are 3 rings:  top and middle compression, bottom oil control.
re-read what i said.

>  In fact, any broken compression ring will
> substantially affect oil control.

out of the 3, the top ring has the least effect!

> Additionally, broken oil or 2nd compression rings are rare since the
> malady is often caused by incorrect timing (or some other direct factor)
> that leads to detonation which is the chief culprit as to ring breakage.

yes, it's usually true that the top ring goes, but it's not always the
case.  and yes, it can increase oil consumption, but it's not as bad as
the other rings.  re-read what i said.

> JT
Jason - 26 Apr 2006 15:27 GMT
> >>>>>>>"MLD" <MLD@verizon.net> wrote in message
> >>>>>>
[quoted text clipped - 143 lines]
>
> > JT

Jim,
I have a question for you. I was taught that the best method of detecting
ring problems was to conduct a compression check. Other than taking the
engine apart, are there now better methods of detecting ring problems? If
so, what are so methods?
Jason

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Eric - 27 Apr 2006 01:40 GMT
> I have a question for you. I was taught that the best method of detecting
> ring problems was to conduct a compression check. Other than taking the
> engine apart, are there now better methods of detecting ring problems? If
> so, what are so methods?

You could do a wet vs. dry compression test as well as a leak down test.

Eric
Jason - 27 Apr 2006 14:36 GMT
> > I have a question for you. I was taught that the best method of detecting
> > ring problems was to conduct a compression check. Other than taking the
[quoted text clipped - 4 lines]
>
> Eric

Eric,
Thanks for your post. I have read about the leak down test but have never
done one.
Jason

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jim beam - 27 Apr 2006 03:30 GMT
>>>>>>>>>"MLD" <MLD@verizon.net> wrote in message
>>>>>>>>
[quoted text clipped - 208 lines]
> I have a question for you. I was taught that the best method of detecting
> ring problems was to conduct a compression check.

for general engine health, i.e. how well it's coping with accumulated
mileage, that's true.  but in the situation cited originally in this
thread, it's not guaranteed to diagnose the problem because defective
oil control rings make almost no difference to compression.  you're
therefore left with logical deduction - if all other causes have been
eliminated, it's the rings.

> Other than taking the
> engine apart, are there now better methods of detecting ring problems? If
> so, what are so methods?

oil/excess deposits on one spark plug is a dead giveaway.  in addition,
oil analysis could do it, if conducted regularly.  but in a situation
where the engine's suddenly dry, analysis is not an option.  that
unfortunately leaves you with strip-down.  but even then, there's not
too much point messing about worrying what went wrong - once stripped, a
motor needs to be rebuilt anyway and all the wearing parts need to be
replaced, so just toss the pistons and rings and start again.

> Jason
Jason - 27 Apr 2006 14:40 GMT
> >>>>>>>>>"MLD" <MLD@verizon.net> wrote in message
> >>>>>>>>
[quoted text clipped - 227 lines]
> motor needs to be rebuilt anyway and all the wearing parts need to be
> replaced, so just toss the pistons and rings and start again.

Jim,
Thanks for the information. I learned some things that I did not know.
The oil analysis appears to be an excellent option.
Jason

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Michael Pardee - 26 Apr 2006 03:53 GMT
> Additionally, broken oil or 2nd compression rings are rare since the
> malady is often caused by incorrect timing (or some other direct factor)
> that leads to detonation which is the chief culprit as to ring breakage.

That agrees fairly well with my limited experience. I rebuilt an engine in a
1970 Volvo I had that pinged badly and smoked a lot (no catalytic
converter). It had broken first compression rings in every cylinder and a
broken second compression ring in one cylinder.

Mike
Grumpy AuContraire - 26 Apr 2006 04:53 GMT
> > Additionally, broken oil or 2nd compression rings are rare since the
> > malady is often caused by incorrect timing (or some other direct factor)
[quoted text clipped - 6 lines]
>
> Mike

Back in the early 1980's, I bought a friend's 1976 Honda Civic CVCC and
drove it for about a year.  It pinged fairly loud on hills and hard
acceleration but luck was with me as I finally adjusted the timing to
get rid of the knock.  The car ran flawlessly all the way to the 170K
(miles) mark when the car rotted out from under me...

<G>

JT

(Who wonders what adventures may lurk with his "new to me" '83 Civic FE)
 
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