Re: DTC P01300

<<<<<<<<Hey Jeff Strickland&quo,

I got a chance to do the compression (dry & wet) test on my car today.
The
cyclinder only produced 10 pounds of pressures during both test. I
checked
one of the other cyclinders, just for good measure, and found it to have
180lbs. psi.

My next move is have the cyclinder head rebuilt. Should I have both heads
reworked or just the one that's bad?

Ray O and qslim, if you're out there, please, weigh-in on this one for
me!

cea1>>>>>>>>>


Wow, that's a pretty badass compression loss. Here is what I would do if
this were my car. Do a compression test on ALL the other cylinders, even
the rear bank, to get a good feel on how every thing is shaping up. Any
cylinder that reads more than a 15psi difference with the others gets a
leakdown test (including #4, which if I remember correctly is the one
giving you issues). If everything else looks alright and the leakdown test
on #4 points to a valve problem, pull the front head and check it out. Once
it's off a valve problem will most likely be apparent.
Now, if this were my car, I'd rework the front head and call it a day.
That is assuming, of course, that all my other testing showed that the
rest of the engine is fairly sound (i.e. good compression, little oil
consumption, and no smoke). The reason I say this is that in reworking the
front head there is nothing else in your way. If you were dealing with the
rear bank, you might as well do both because the rear is such a pain to
get to without tearing everything apart.
But on the other hand, if you like your car and want to keep it a while,
you may be in the position to go all in an get the whole shebang, like
checking out the crank & rod bearings, replacing rings, and the like.
But if this were my ride I'd probably just address the problem in the
#4 cylinder in the front bank. It's practically begging to get yanked off
anyway. Hope this helps.