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Old 10-26-2011, 11:31 PM   #1
n_bannerman
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Default 86 2.3 runs fine then will randomly start miss firing and run lean

So it started out last summer after i broke a timing belt. Once i got it running again and got the timing right it was running fine for a week then started to randomly miss fire and run really lean for no reason. not throwing any codes other then yet another o2 sensor. its been frustrating. have done tune up after tune up and re timed it. gone threw and checked the injectors and heads. would anyone have any input on what to check? It would be nice to get it running right before wheeling season starts.

Thank for the help in advance.
Nathan
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Old 10-27-2011, 09:31 AM   #2
Hagan
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Since you played with the timing...my suggestions would be to start with the timing. Have you checked the timing with the little connector detached? (its a weird little connector you have to disconnect in order to time it). And my next suggestion would be to look at the timing belt. Kinda sounds like it skipped a tooth. Does it always run fine then run bad...or is it just running bad now???
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Old 10-27-2011, 11:34 AM   #3
n_bannerman
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it will randomly go from running fine to running like shit and miss firing bad. jumps back and forth all the time. ill replace the plugs and retime it again.
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Old 10-27-2011, 04:09 PM   #4
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Quote:
Originally Posted by n_bannerman View Post
it will randomly go from running fine to running like shit and miss firing bad. jumps back and forth all the time. ill replace the plugs and retime it again.
sounds like a bad tensioner.. thats my idea though going off that you have to retime it
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Old 10-28-2011, 11:40 AM   #5
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ill look into it. thanks
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