Timing moving at idle - Team Camaro Tech
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post #1 of 3 (permalink) Old Apr 6th, 11, 09:04 PM Thread Starter
Senior Tech
Join Date: Mar 2008
Location: Clovis, California
Posts: 134
Timing moving at idle

383 stroker...
Timming moving at idle.
Set at 34* at 3000rpm....(14* initial)
Vacuumn advance hooked up.
Timming at idle creeps to about 30*...rap throttle, settles back, then creeps back to 30* at idle.

Is vacuumn can bad?
Runs great but do not understand "idle creep" to 30*.
Thanks for help.
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post #2 of 3 (permalink) Old Apr 6th, 11, 09:48 PM
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Join Date: May 2005
Location: Laurel, In
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Re: Timming moving at idle

For starters, plug the vacuum advance and see what it does.

Experience...... It's what you get when you didn't get what you wanted.
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post #3 of 3 (permalink) Old Apr 6th, 11, 10:10 PM
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Location: Lyman, SC
Posts: 8,348
Re: Timming moving at idle

If your vacuum advance is hooked up to full manifold vacuum that's what it's going to do. Hope you set your total mechanical advance with the vacuum can disconnected and the manifold or carb port plugged.

If you do not have enough idle vacuum to pull the can in all the way it will dither in and out as well.

'69 Camaro
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