Idle Problems on cold start

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Dec 13, 2006 | 02:48 PM

T Spada

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3rd Gear

Joined: May 2006

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Idle Problems on cold start

1978 Silver Ann. L-82 4 speed with 67,558 miles all stock equipment. This past past year I tuned up the motor; cap, rotor, plugs, wires, new fuel / air filters. The motor starts easily when cold, however it will not idle (stalls out) until the motor warms up, it will occasionaly stall out when I come to a stop. The vacuum seems fine, the lights open and close as when the car was new. The motor runs runs smoothly at all RPM's except at idle when cold. Please advise; vacuum, carburator / choke, or ignition problems.

Dec 13, 2006 | 02:50 PM

...Roger...

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Joined: May 2006

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From: Dayton, Ohio

Probably a choke issue does it run rich ?

Dec 13, 2006 | 02:54 PM

...Roger...

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Joined: May 2006

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From: Dayton, Ohio

If it does run rich the choke pulloff could be bad or need adjustment.If it doesnt run rich and you can feather the gas then maybe you can just set the fast idle.

Dec 13, 2006 | 03:09 PM

Jud Chapin

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From: Wellington, FL

St. Jude Donor '11 thru '25

Sounds like the choke may need an adjustment. Perhaps someone can add a picture of the adjuster.

Dec 13, 2006 | 03:18 PM

Jud Chapin

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From: Wellington, FL

St. Jude Donor '11 thru '25

Quote:

Originally Posted by Jud Chapin

Sounds like the choke may need an adjustment. Perhaps someone can add a picture of the adjuster.

One other thing...did you have this problem prior to the tune-up?

Dec 13, 2006 | 05:04 PM

lars

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Joined: Aug 1999

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From: At my Bar drinking and wrenching in Lafayette Colorado

Sounds like a choke adjustment, choke pulloff adjustment, or fast idle adjustment issue. If you drop me an e-mail request, I can send you my choke setup procedure:
V8FastCars@msn.com
Lars

Dec 20, 2006 | 03:18 PM

T Spada

Thread Starter

3rd Gear

Joined: May 2006

Posts: 3

Likes: 0

Quote:

Originally Posted by lars

Sounds like a choke adjustment, choke pulloff adjustment, or fast idle adjustment issue. If you drop me an e-mail request, I can send you my choke setup procedure:
V8FastCars@msn.com
Lars

Hello Lars,
Thank you for responding, you offered to e-mail me your choke set-up procedure. Also, before I start your procedure do you think I should install a new manifold heat spring assembly, the present one will be 29 years old in March?
Thank you,
Ted S-

Dec 20, 2006 | 05:21 PM

lars

Tech Contributor

Joined: Aug 1999

Posts: 14,382

Likes: 6,402

From: At my Bar drinking and wrenching in Lafayette Colorado

Quote:

Originally Posted by T Spada

The 1978 does not use a manifold heat spring. You should have an integral choke that works off hot air. Is this not what you have...? If you have a manifold heat spring, someone has done something funny to your car, and this may be your problem...