Slight misfire after 2.55" install (56k... wait a while - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-07-2006, 04:34 PM   #1
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Default Slight misfire after 2.55" install (56k... wait a while

I noticed this today since it caught my ear, you can hear it on the video, it'* the deep puh, puh...............puh.....puh. It actually makes me worry.

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Old 09-07-2006, 05:05 PM   #2
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Here'* a better video, more distinct.

http://s102.photobucket.com/albums/m...gAnch=imgAnch1
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Old 09-07-2006, 05:51 PM   #3
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Even worse, pops louder upon acceleration. :(

http://s102.photobucket.com/albums/m...MVI_0001-1.flv
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Old 09-07-2006, 07:23 PM   #4
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Plug pics. Possibly the culprit?



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Old 09-07-2006, 07:24 PM   #5
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Yes..this could very well be caused by the apparent lack of exhaust.

You say those fuzzy things are plugs? Ok..I'll take your word on that.

C'mon..buddy ...we need clear pics to help you.
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Old 09-07-2006, 07:25 PM   #6
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wow thoes are the worst pics in the universe.....
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Old 09-07-2006, 07:40 PM   #7
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Ok.. it'* not only misfiring.

A quick AIM chat with Pinks, yielded that the car is bucking and popping badly when he tries to drive it. New vid on the way.
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Old 09-07-2006, 08:04 PM   #8
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Quote:
Originally Posted by 1993 SLE
wow thoes are the worst pics in the universe.....


You guys cracked me up right there. lol

Let'* hope I have better luck when I go smaller! That doesn't sound good.
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Old 09-07-2006, 08:32 PM   #9
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Quote:
Originally Posted by bonnie94ssei
Quote:
Originally Posted by 1993 SLE
wow thoes are the worst pics in the universe.....


You guys cracked me up right there. lol

Let'* hope I have better luck when I go smaller! That doesn't sound good.
you shouldnt have problems.....your car has the same color paint in the engine bay as the rest of the car......
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Old 09-08-2006, 03:04 AM   #10
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UPDATE!

markviiisvt4 told me that it is most likely the plugs. He does not recall changing them in over 7 years, so it is possible that the 2.55" pulley install killed the plugs and they were most likely on their last legs. They are old looking and are more worn than what they are supposed to be, (i.e not being replaced in 7 years). They will be changed tomorrow, with some new Autolite 104'* gapped at .055. Alongside of that, the coils are gonna be tested and replaced if needed.

Hopefully that fixes it and I will be happy.
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