1991 Z28 timing

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Oct 26, 2011 | 09:49 AM
  #1  
I have a bone stock 91 350 Z28. I set the timing and the car ran fine but sometimes when I start it it acts as if the timing is way of.. It barely idles and won't take any throttle... Let it set a few minutes and it starts and runs fine again... Any suggestions please....
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Oct 26, 2011 | 01:56 PM
  #2  
Re: 1991 Z28 timing
My car liked 10-12 BTDC but factory is 6 BTDC.
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Oct 29, 2011 | 09:50 AM
  #3  
Re: 1991 Z28 timing
Quote: I have a bone stock 91 350 Z28. I set the timing and the car ran fine but sometimes when I start it it acts as if the timing is way of.. It barely idles and won't take any throttle... Let it set a few minutes and it starts and runs fine again... Any suggestions please....
Ohm your injectors. They should all come out to about the same. Sounds like a bad injector.
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Oct 29, 2011 | 03:18 PM
  #4  
Re: 1991 Z28 timing
Thanks I can check those but when it does act up it runs way to bad for it to be one injector.. It won't even pull out of it's tracks.. Seems to only do this after the car is warmed up and you re-start it...
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Oct 29, 2011 | 09:25 PM
  #5  
Re: 1991 Z28 timing
Just ohm the injectors. It could be one, it could be three. You don't know. Even one bad injector made my car stall out at a stop sign. Could also be ignition related.
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Nov 18, 2011 | 04:27 PM
  #6  
Re: 1991 Z28 timing
Could be a bad ecm too.
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