Car bogs down in cold...

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12-11-2003, 10:58 AM

Tuuurbo

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Join Date: Aug 2003

Location: Canada

Posts: 55

Car bogs down in cold...

Ive had this problem for a while now where in the mornings when its cold out I star driving my car and it gets really jerky under smooth accelration. Like its not getting enough fuel or something. This happens until the car warms up then it runs perfectly fine, with no problems at all. What could this be?

12-11-2003, 04:15 PM

AllmyZs

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When my 78 did this I found it was my AFM. But after it warmed up it ran fine. I replaced the AFM and problem was solved. You might want to check your timing also. Maybe run it a little advanced, or a hotter plug.

12-14-2003, 01:20 PM

Tuuurbo

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Sorry what is an AFM?

12-14-2003, 03:34 PM

AllmyZs

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That is an Air Flow Meter. It is connected between the air box and the throttle body.

12-16-2003, 06:41 PM

lifegrddude

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Join Date: Oct 2001

Location: San Diego

Posts: 1,220

Pull your fuel injector rail and see if the caps for the pintle have broken off or anything. They can cause small air leaks and will make the car run rougher at idle, especially when cold. Your injectors may be going bad as I have 2 bad ones on my Z and at start up it is a pain to keep it from stalling out at a light until it warms up. I so can't wait for school to be out for the semester, it's time to do some work.
John 82ZXT