Thread: Ignition timing jump when checking timing with light.
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Old 11-13-2011, 09:51 PM   #16
Wags391
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Re: Ignition timing jump when checking timing with light.
So I finally got to do all the tests today. Vacuum is around 19 at idle and at 2000 RPM. Compression is between 180-185 dry on all cylinders. Spark is good. Bought a tester and the spark has a nice pop, blue in color, and jumps up to and beyond half an inch. I tested the spark with the engine warm also. Same. So where do I go from here? What else can be causing the timing to jump around while checking it with a timing light?

Also, I has said I can't feel anything while driving, like a miss or anything. I do however, notice the voltage dip down randomly. So it is happening while driving.
Last edited by Wags391; 11-13-2011 at 10:41 PM.
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