1986 Mercury Lynx 1.9L HO Running very rough after bottoming out.

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

xlh1460@hotmail.com - 13 Mar 2006 18:01 GMT

Recently bottomed out suspension leaving a parking lot and the card
started running very rough.

Replaced plugs, wires, cap and rotor as they were all fairly old.

Didn't help a bit.

Engine idles extremely rough, smooths out a bit when RPM increases and
has decreased power.

Checked aligment of crank and cam marks and rotor and timing appears
OK.

Haven't checked compression, fuel pressure or vacuum yet.

Any suggestions?

Thanks.

Reply to this Message

xlh1460@hotmail.com - 14 Mar 2006 02:38 GMT

Ok, more info, should have checked all of this first.

Spark OK on all 4 cylinders.

compression on 1 and 2 is around 35 psi (yikes)

compression on 3 and 4 is around 150 psi.

Am I looking at a blow head gasket?

Is the fact that this started after bottoming out the suspension a
coincidence?

I guess it is either time to pull the head or just go car shopping.

Reply to this Message

ShoeSaleman - 14 Mar 2006 07:02 GMT

> Ok, more info, should have checked all of this first.
>
[quoted text clipped - 10 lines]
>
> I guess it is either time to pull the head or just go car shopping.

seams very likely a blown head gasket between 1 and 2. bottoming out the
car won't cause a blown head gasket.

Reply to this Message

xlh1460@hotmail.com - 16 Mar 2006 15:41 GMT

It seemed unlikely to me to. Just about have the head off. Will find
out soon enough.
Hope it's just the gasket as I have grown kind of fond of this little
machine :)

Reply to this Message

xlh1460@hotmail.com - 16 Mar 2006 15:42 GMT

It seemed unlikely to me too. Just about have the head off. Will find
out soon enough.
Hope it's just the gasket as I have grown kind of fond of this little
machine :)

Reply to this Message

Al Bundy - 14 Mar 2006 14:39 GMT

If you numbers are correct, you've been driving on two cylinders for
some time and the bump just waked you up. I doubt you numbers
completely. I don't think you could drive it on two cylinders. The
plugs in those cylinders would have looked terrible. You didn't mention
that. Have somebody else look at it.

Reply to this Message

xlh1460@hotmail.com - 16 Mar 2006 15:46 GMT

Al, the car definately was running fine and then wasn't.

I don't know why you would doubt my compression numbers. I double
checked them.

I have no idea why you would assume that I was running on 2 cylinders
from some time, it went from running fine to barely running at all.

Where the heck did that leap in "logic" come from?

I suspect if I would have had compression readings from before it
started running poorly they would have looked much better.

Thanks anyway.

Reply to this Message