high acceleration sputtering, lacking power? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-07-2005, 09:24 AM   #1
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Default high acceleration sputtering, lacking power?

i tihnk this may actually be a problem, originally i would occasionally hear a sputtering farty noise unde rheavy acceleration, i assumed it was water in the exhaust and dismissed it, but lately it has been doing it more often, and seems to be sapping power, it HAS been very raininy and mor ehumid so it could be a larger accumulation of water i suppose, but how would i fix it, and what else could it be?
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Old 06-07-2005, 10:11 AM   #2
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My guess is spark or fuel. My initial inclination would be fuel pump, because that is what happened to me.
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Old 06-07-2005, 03:27 PM   #3
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i had a very similar problem bout 2 weeks ago and i messed around with a few things and finally put some new plugs in it and now it runs smooth.
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Old 06-07-2005, 03:53 PM   #4
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Sounds like your plugs are fouled. Or about to foul.

Just go grab a new set, gap 'em, and you should be all good to go.


-justin
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Old 06-07-2005, 04:30 PM   #5
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what are good plugs? i heard the bosch platinum arent good on gm cars and have heard good tihng about the ac delco iridium
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Old 06-07-2005, 04:47 PM   #6
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oh and whats the spacing?
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Old 06-07-2005, 05:05 PM   #7
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Had a similar problem (and no boost). Spark plugs solved the problem.

I used AC Delcos. I think the gap is like 0.060".
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Old 06-07-2005, 05:46 PM   #8
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I'm partial to NGKs. TR60s are stock heat range [stock, no mods]. TR55s are one range colder [CAI, exhaut mods, minimum].

.050" or .055" gap for either. Pick the gap you want..


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Old 06-07-2005, 06:38 PM   #9
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i got autolite 605, they were spaced just under .060 but i spaced em to .060, since thats what the emmision sticker said, should i put em down to like .055? i havent instaleld them yet btw, waiting for the car to cool
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Old 06-07-2005, 07:30 PM   #10
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Changed the fuel filter?
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