LT1-LT4 Modifications 1993-97 Gen II Small Block V8

spark plugs

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Old 07-02-2011, 09:51 PM
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It wasn't to bad , I did most of them from the top and only used the slp plug socket i bought once. All the others i did with a regular plug socket. The wire routing was not the easiest but its not impossible. The only problem i had was #8, I got to it with the starter out but when I tried to remove it it loosened and then started to tighten back up after about two turns. That makes me think it was possibly cross threaded so I tightened it back up and left it in for now. So this leads me to my next question, i changed the plugs and wires and the car runs better but I still have a stumble in acceleration from first gear and a bad stumble in 6th gear at around 60-70 mph. Id like to know opinions on possible problems.
Old 07-03-2011, 02:57 PM
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Ok, i got number #8 from the top so all plugs and wires are done but i still have the miss.
Old 07-04-2011, 12:52 AM
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I've got that same stumble, I'm waiting to get a cable to plug my computer into my car to figure out what it could be. I'd also be interested in peoples opinions.
Old 07-04-2011, 03:25 AM
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the SLP one that my friend order, came with craftman socket that been chop shorter.

Last edited by killagt; 07-04-2011 at 03:36 AM.
Old 07-04-2011, 11:49 AM
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yeah, i ordered that same socket from slp but i didnt end up using it.
Old 07-09-2011, 03:33 PM
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I hooked the car up to an oscilloscope and the engine is firing on all cylinders and all plugs and wires check out good. The car idles fine, If you give the car light throttle it revs normal. One you give it mid to heavy throttle it misses and pings. I thought it might have been some bad gas so I drove the tank empty and refilled and also changed the fuel filter. Could this be a possible opti problem ?



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