Changed timing chain now smoke and power loss - Page 3 - 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 03-25-2007, 11:30 PM   #21
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One tooth on the crank gear is 15*, one tooth on the cam gear is 7.5* (24 and 48 teeth respectivly).

That'* a lot.


On the harmonic balancer you need to check that the rubber between the inner and outer is still sticking and isn't ripped.

Don't get your spirits down. I put over 60 hours into my timing over two weeks to find the real problem. I got rewarded in the end with a car that starts with just a tap.
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Old 03-25-2007, 11:32 PM   #22
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I dont really understand what those numbers mean. How would that make it run at 1-tooth off? Would it even run?
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Old 03-25-2007, 11:34 PM   #23
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Quote:
Originally Posted by osubuckeyes
I dont really understand what those numbers mean. How would that make it run at 1-tooth off? Would it even run?
I could see it barely running three teeth off on the cam side and MAYBE two on the crank side, But that'* barely running.
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Old 03-25-2007, 11:35 PM   #24
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So if its running fine when it is cold then I am probably not dealing with a misaligned timing chain problem am I?
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Old 03-25-2007, 11:38 PM   #25
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Well, If you've got it installed 15* retarded and the PCM tried to advance 20 degrees everything is going to be wrong.

The PCM uses the CTS to help determine SA, so the temp of the engine is going to change hos it runs if the gears are off.
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Old 03-25-2007, 11:40 PM   #26
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I just dont see how I could be off at all though. I hear it is possible but if the camshaft and crankshaft didnt move at all when I changed the gears and chain I just dont see it being off. Never know I guess though.
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Old 03-25-2007, 11:42 PM   #27
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Well, If the old chain had 7.5* of slack (mine had 27*) and you lined it up to fit, and not for the marks to line up. It could be wrong.
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Old 03-25-2007, 11:43 PM   #28
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I wish I knew who the engineer at GM was who decided to put a plastic snap in magnet inside an engine. I cant believe I am going through all of this over a 9 dollar part.
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Old 03-25-2007, 11:44 PM   #29
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Hey, I paid like $15 for my sensor magnet, and I broke the first one before it ever got in the engine. You're lucky allready.
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Old 03-25-2007, 11:46 PM   #30
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LOL I broke one too. I found some guy on another forum who filed the back off his and used JB weld to put it through the cam sensor hole and stick it to the sprocket. He said his is still working 5 years later. I wasnt that lucky after about 5 hours of trying to get it to JB weld in there.
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