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Date Posted: 03:03:36 07/13/02 Sat
Author: thrasher_dude
Subject: Re: timing...
In reply to: Gwyn 's message, "timing..." on 16:56:24 07/10/02 Wed

backfires are extremely loud and i believe happen moreso on carbureted cars than on fuel injected cars but i could be wrong. otherwise, that popping sound, if not particularly loud, just distinctive, reminds me of the recent rough cold starts i used to have--engine would catch but just run silent for a sec then putt to life and be fine--i think that was clogged injectors or dirty something, because next time i filled up my gas tank, i put in this stuff called "Sea Foam" and it did quite the brilliant job--my cold starts are great now.

you can check your own timing but the idle should be correct, otherwise the test will be inaccurate (high or unstable idles caused by the computer system affect timing when everything for timing is mechanically set properly). there's a hole in the top of your transmission bellhousing. take an inductive pickup timing light, and follow the instructions in a repair manual or with the light. they'll both say the same thing (hook it up to the battery, then hook the pickup to the #1 cylinder spark plug wire). This is best done at night or in a darkened garage. Start the engine, and shine the light into the hole in the bellhousing. If your timing is correct (and your idle is correct along with it), you'll see a white mark that stays centered in that hole. that's the timing mark on the flywheel centering at the top when the #1 cylinder fires. Hope this helps! =>

Daniel
'84 318i

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