Mike '91 Z28

Every once in awhile when I cold start my Z, it dies when I put it in to reverse or drive. It just sputters and dies if I don't give it gas. When I let the car idle for awhile and let it warm up it runs just fine. Is this because the rocker arms are too tight? Or could it just be the TPS not giving the motor enough air? Thanks.

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1991 Camaro Z28
305TPI Auto
S/R Torquer Heads
LPE216 Cam
TES Headers w/3" exhaust
Homemade AFPR @50psi
Hypertech Chip
K&N's
More on the way...

Guest

I'd say its engine vacuum related. Get a better chip, or adjust your throttle plates and TPS and it should go away.

ede

and it might even be something simple like a tune up part, plugs or filters. i tihnk it's always best to verify you have a good tune up before you go looking else where for a problem.

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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM

Vader

Mike,

Max and Ed are both correct, and I would follow their suggestions first. I am curious, however, why you think your rockers may be adjusted too tight. Did you recently relash them?

If, by some chance, they are on the tight end, it is possible that vacuum would be low, compression would be low, and you could be doing damage to valves.

Any explanation?

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Later,
Vader
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"Get UP - Drop the bombshell!"
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Mike '91 Z28

Just a couple of weeks ago I finished my first head and cam swap so basically the plugs, wires, etc... are brand new.

TorqueMonster

I had those exact same symptoms a couple years ago. Turned out to be a bad pick-up coil in the distributor.
I replaced it and all was well again.
Good luck.


Torq