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Okay- I spoke with the guy who actually did the work (small shop) and directly asked him if he replaced the valve springs, and he said yes.


I'm not going to call him a liar, but I'll bet I could introduce you to a few hundred folks who would. <img src="/forums/images/graemlins/wink.gif" alt="" />

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Sorry for my noviceness, I'm still learning. Can you fill me in on what things I should check while I'm in there?


There's no shame in being a novice.... we all were once. The fact that you're asking is the first step to enlightenment. <img src="/forums/images/graemlins/wink.gif" alt="" /> Next thing you know, you'll be doing your own rebuilds. You're better off getting the specific advice from someone here who has a 3.5L and knows the 3.5L areas of concern. I know the 3.0L fairly well, but not the 3.5L.

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will one cylinder not firing on this engine cause it to vibrate fairly badly? Could this vibration be caused by something as simple as a bad plug wire?


Yes, it's quite possible that a plug, plug wire or coil wire could be all that's wrong.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum