Thread: using my timing light
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08-28-2009 02:35 PM #1
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- Car Year, Make, Model: 1990 chevy 454ss
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using my timing light
timing mark on my 502 ramjet complete motor is jumping a good 10 degrees both sides of the base timing of 8 degrees it's not steady whats up
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08-31-2009 08:51 AM #2
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I'd check the basics first, did you pull the dist vacuum line & block it.( I've done that a few times. ) Does it have a roller cam ? Could be the cam walking back & forth a little , cam button or retainer ? Sounds more like a vacuum problem.Tomorrow is promised to no one.
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08-31-2009 10:39 AM #3
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Some ignition systems don`t play well with some timing lights.Its gunna take longer than u thought and its gunna cost more too(plan ahead!)
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I'm happy to see it back up, sure hope it lasts.
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