Got my truck back from the mechanic, they did replace my sparks. I
asked for one, as a learning tool. Here's what it looks like:
The outside electrode is a pretty even gray, with just the slightest bit
of yellow speckling on one side. The tip looks a tad narrower than the
rest.
The center electrode is grey, the top isn't flat- it's markedly angled
down toward the outside electrode.
The insulator is pretty much white/very very light brown speckled.
Along the top edge it's a yellowy brown.
There's barely any corrosion at all, anywhere, but both electrodes, to
my eyes, look worn.
The threads look a bit dark to my eyes as well.
According to the web page that was posted here a while back, and another
one I googled up, my engine's running a bit warm. One site suggested
something about vaccum leaks (it was a bike site) - and indeed my truck
still throws a P0455 "Evaporative Emission System Leak Detected". Could
these two issues be related?
Truck runs fine, but still seems to lack a bit of the the g-force
acceleration it used to have.
Thanks for any responses. (and TGIF!)
jmc
aarcuda69062 - 27 Apr 2007 13:52 GMT
> Got my truck back from the mechanic, they did replace my sparks. I
> asked for one, as a learning tool. Here's what it looks like:
[quoted text clipped - 17 lines]
> one I googled up, my engine's running a bit warm. One site suggested
> something about vaccum leaks (it was a bike site)
Sounds completely normal. Worn with a light tan or gray color,
no heavy deposits. Color of the threads is meaningless.
> - and indeed my truck
> still throws a P0455 "Evaporative Emission System Leak Detected". Could
> these two issues be related?
Not in the least. Whole different issue.
> Truck runs fine, but still seems to lack a bit of the the g-force
> acceleration it used to have.
Seat of the pants acceleration sensations are very misleading.
RM v2.0 - 27 Apr 2007 16:08 GMT
>> - and indeed my truck
>> still throws a P0455 "Evaporative Emission System Leak Detected". Could
>> these two issues be related?
Isnt this usually gas cap related?
miles - 28 Apr 2007 01:15 GMT
>>> - and indeed my truck
>>> still throws a P0455 "Evaporative Emission System Leak Detected". Could
>>> these two issues be related?
>>
> Isnt this usually gas cap related?
It can be but from my experience the tank evap hoses and manifold are
suspect.
jmc - 28 Apr 2007 15:10 GMT
Suddenly, without warning, RM v2.0 exclaimed (28-Apr-07 12:38 AM):
>>> - and indeed my truck
>>> still throws a P0455 "Evaporative Emission System Leak Detected". Could
>>> these two issues be related?
>>
> Isnt this usually gas cap related?
Yes, but gas cap was replaced, and light reset. Was back on very quickly.
jmc
miles - 27 Apr 2007 14:31 GMT
> still throws a P0455 "Evaporative Emission System Leak Detected". Could
> these two issues be related?
I don't think so. The PO455 relates to pressure in your gas tank. It
pumps fumes back to the engine rather than released to the atmosphere.
I had that issue about once a year on my 2001 Ram. Check all hoses
leading away from the tank. First I had a split hose end. Then it had
a crack on the plastic hose manifold at the canister. I don't believe
it would cause any performance issues but if your state tests like here
in AZ they will fail it if an emissions related code is present.