Question about 1999 BMW 323 Series

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How do u make sure u r on top dead center - 1999 BMW 323 Series

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First of all, you probably don't want to have it on Top Dead Center ("TDC") ....
You need some "advancement" for the plug to "spark" Before TDC.

Best to use a Timing Light (looks like a ray gun from the future)...
The Harmonic balance (big pulley at lower part of engine) has a timing mark on it and a "scale" for that mark is on the engine block.

With the engine running / warm / idle, the timing light should show 8 degrees Before TDC ( 8 degrees BTDC).

The "manual" way, w/o a timing light will take an hour or so:
1. remove sparkplug from #1 cylinder.
2. Crank engine for one or two "clicks" (a tenth of a second, or less)
3. Check cylindar to see if cylinder head is at its highest point.
4. Need I go on??
5. Keep "clicking" ignition until you are sure that cylinder #1 is on top.
6. When it is, that means that the cylinder, hence the engine, is in Top Dead Center position.
7. The timing mark will be 8 degrees AFTER TDC. (8 degrees ATDC)

=== or ===

ok, a shop can check it for you, maybe free...

I hope this helps...

Posted on Sep 09, 2009

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Remove no 1 spark plug and insert a long screw driver (make sure it cann't drop into cylinder ) then turn engine over by hand carfully when the screw driver is at it's highest point thats tdc

Posted on Sep 09, 2009


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