the tach needle wiggles around more quickly than it would/should with a lopey idle. That was my first impression when I watched the video. Check out the tach and cable. 
What's it supposed to idle like?
Thread Starter
Holley HP EFI w/TPI
Joined: May 2009
Posts: 553
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From: Kanata ON
What's it supposed to idle like?
Since just about every other car I've owned has had a rock steady idle, I'm wondering what this engine is supposed to idle like.
The engine is supposed to have a 1969 300hp cam.
The engine is supposed to have a 1969 300hp cam.
Race Director
Joined: May 2006
Posts: 18,771
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start with basics, are the points burnt, are the cap and rotor burnt, are the plugs good, are the plug wires not beyond resistance limits, if points good are they set for 30 degrees dwell, is the timing correct, and lastly are the mixture screws and idle speed screw correctly adjusted. After that check for a vacuum leak.
Last edited by MelWff; Aug 19, 2013 at 05:10 PM.
Thread Starter
Holley HP EFI w/TPI
Joined: May 2009
Posts: 553
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From: Kanata ON
No points -> Pertonix Ignitor 2
Looked ok when I did the TPI swap, I'll check.
Haven't checked either of those, I'll check the plugs this weekend.
TPI swap with Holley EFI, it's taking care of that automatically 
I'll check for those after the plugs, but most of the hoses are newly routed, at least at the engine.
are the cap and rotor burnt
are the plugs good, are the plug wires not beyound resistance limits,
if points good are they set for 30 degrees dwell, is the timing correct, and lastly are the mixture screws and idle speed screw correctly adjusted.
After that check for a vacuum leak.
Drifting
Joined: Apr 2007
Posts: 1,970
Likes: 45
From: Cameron Park CA
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Safety Car
Joined: Mar 2007
Posts: 3,652
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From: Bridgewater nj
Yep, its a Chevy...valve tap and all 
and it seems to coincide with the needle jumping. Have you had the valves adjusted?
Other than that is seems ok. If its an auto trans, put it in gear and let us hear it
and it seems to coincide with the needle jumping. Have you had the valves adjusted?Other than that is seems ok. If its an auto trans, put it in gear and let us hear it
Thread Starter
Holley HP EFI w/TPI
Joined: May 2009
Posts: 553
Likes: 0
From: Kanata ON
Yanked my plugs, to have a look. Two of my spark plug wire boots were dry as a bone. Too close to the exhaust manifold?
http://forums.corvetteforum.com/c3-t...plugs-say.html
http://forums.corvetteforum.com/c3-t...plugs-say.html