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> Backfire
mike_the_man
post Mar 27 2004, 07:33 PM
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Hi all,

I was working on my teener this afternoon, setting the timing. I got everything set and it seemed to run pretty good. I let the car cool off, and started it again, and it was backfiring out of the exhaust. It backfires all the time, at idle or when revved, but it only seems to backfire when the car is cool. Adjusting the mixture screw on the CPU seems to help a bit, but not enough.

The car is a 74 2.0L with fuel injection. I have replaced the CHT and the MPS holds a vaccuum, and I have recalibrated it.(I'm pretty sure I calibrated it right) Any thoughts? Backfiring out of the exhaust means lean, right?

Thanks,
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Posts in this topic
mike_the_man   Backfire   Mar 27 2004, 07:33 PM
Andyrew   How long since last valve adjustments? Thats my o...   Mar 27 2004, 08:04 PM
mike_the_man   Last year, but I've only driven the car about ...   Mar 27 2004, 08:35 PM
SirAndy  

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