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Old 11-17-2008, 12:26 AM   #1
Scooby Newbie
Member#: 134657
Join Date: Dec 2006
Default how to check timing?

I have a 93 Impreza and I want to check the timing on the car. I have never done this before on any car. Where do I start How would I go about it on this particular car?
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Old 11-17-2008, 07:57 AM   #2
Scooby Guru
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Join Date: Mar 2001
Chapter/Region: MWSOC
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The ignition timing is controlled by the ECU. You can check it by putting a timing light on it, as in any other car....there are graduated tickmarks on the timing cover near the crank pulley. It may be hard to see the timing mark on the crank pulley, so you'll probably have to make one for #1 TDC. It will vary as the ECU does it's thing at idle.

If you are talking about static timing of the motor, you'll have to pull the timing covers off and put the crank timing gear on it's timing hashmark (not the arrow). The cams pulleys should line up with corresponding notches in the cover(s) and/or parting line on the left (as looking at it) head. If neither cam lines up, bring it around one more revolution to get to the compression stroke for #1. They should all line up then.

It would help to know what motor you're working with.

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