I have a '95 GC with the 4.0 6cyl that losses power and misses at highway speeds under load. I was told, after checking every other possibility with no improvement, that weak valve springs could be the cause. Does anyone have any experience with that?
Not with a 4.0L, but several years ago my wife's '68 Camaro had similar symptoms with a 327 engine. It had a flat cam, not uncommon in those engines. No idea if that could be your problem, but might be worth considering if you don't find something else. Good luck!
1995 5.2 ZJ Sold... but still in the family
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