A young man who has made quite a favorable impression on me is having
car trouble, and is asking for help. Being a Shovey gasser, I don't
have any/many ideas, so I thought i'd put it out here and see if
y'all have any ideas and suggestions.
Begin Quote:
Would love any ideas you can give me on the issue I'm having on my
car('98 Chevy Camaro 3.8 V6). It is misfiring on acceleration, and
fairly badly. The injectors have been replaced, the spark plugs and
wires have been replaced, the heads were recently reworked with a
valve grind, all new engine gaskets, and the Idle Air Control
Valve(IACV) was recently replaced as well. It idles well, but
misfires as soon as a load is placed on the engine, any load at all.
The less the acceleration, the less the misfire, and vice versa. It
is very bad when accelerating in a high gear at low engine rpm. The
shop diagnosed misfires on multiple cylinders, and recommended I
change the injectors and plugs, which I did, and of course it didn't
solve it. I will talk with the shop tomorrow, that's another issue.
Ran a compression check today on all cylinders, the numbers were
quite good, all in the 180-205 psi range, and the minimum for this
engine is 100 psi. Suspected the Catalytic Converter of a possible
blockage, so I removed the exhaust pipes at the manifolds and test
drove, still misfiring as usual.
Would love any ideas you have, sir! Thank you.
End quote.
He is a Navy veteran, so I'd appreciate any ideas to help him. Thanks.
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