time mark - Team Camaro Tech
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post #1 of 4 (permalink) Old Feb 3rd, 07, 02:55 PM Thread Starter
Join Date: May 2006
Posts: 12
time mark

hey i was wounderin if any knows whats wrong with this when i went to set the timing on my car the timing mark jumps around and always jumps to the same spots so i changed the timing chan but still does the same thing.
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post #2 of 4 (permalink) Old Feb 3rd, 07, 03:27 PM
Join Date: Jan 2007
Posts: 1,163
Re: time mark

bad gear on the dist...loose shaft bushings...broken adv springs...flaky vac signal at vac advance(i know you`re supposed to time the car with this disconnected)
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post #3 of 4 (permalink) Old Feb 3rd, 07, 04:21 PM
Join Date: May 2006
Location: Ringgold, GA
Posts: 28
Re: time mark

I'm assuming the timing is jumping around at idle? Does it smooth out as the rpm's come up?

I had that issue right after a rebuild so I knew it wasn't anything worn or loose. I had the lightest advance springs in the dizzy and with the engine idling at 950 - 1000 rpms, mechanical advance was starting to come in. I installed the next heavier springs and problem went away.

Also if you have a MSD or another multi spark unit, it can cause problems with some timing lights. Just a couple thoughts.

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post #4 of 4 (permalink) Old Feb 4th, 07, 12:41 PM
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Re: time mark

A sticky oil pressure relief valve. Remove it and emery cloth the piston the a gloss. This solved my problem.

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