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91 Camaro 3.1 spark problem

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Old Oct 17, 2010 | 09:51 PM
  #1  
pdooley's Avatar
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91 Camaro 3.1 spark problem

She's only hitting on 3 cylinders.
Number 1 is dead, 3 is good, i think 5 is dead, and 2 cylinders on the driver's side are firing.
needless to say, the cars runs really rough and then stalls out.

i searched the forum for a while and discovered that the reluctor part in the distributor has a laminated magnet of sorts and cracks, which causes spark scatter and erratic timing.
No problem, I went the the auto parts store and got a cardone reman distributor.
popped it in and no difference. i know cardone is not the greatest brand, but it came with a lifetime guarantee, etc..

Edit** ok, my timing light was bad. i'm getting spark on all 6 cylinders but still will not start.
i played with the timing, made very little difference. it will try to catch but won't run.
spraying starting fluid in the intake makes no difference.
compression is 170-180psi.

anybody?

Last edited by pdooley; Oct 18, 2010 at 02:23 PM.
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Old Oct 18, 2010 | 02:23 PM
  #2  
NINÅ's Avatar
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Joined: Jan 2006
Posts: 3,341
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Spark Is Dark

If the ignition is consistent on which ones won’t fire check for bad plug wires.

Get a spark tester so you can test it right out of the distributor cap to see where the problem is, at the cap or at the plug wire ends.


Happy Racing!



Make Noise, Turn Left, Repeat

.

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Old Oct 18, 2010 | 04:30 PM
  #3  
pdooley's Avatar
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Re: 91 Camaro 3.1 spark problem

will do, thanks

edit- damn fuel injectors..
2 were bad, they checked out at 2 ohms and 8 ohms.
i unplugged those 2 and she fired up on 4 cylinders.

apparently the partially shorted injectors take out the whole bank so no fuel flows.

time to find the fuel injector thread to source replacements...

Last edited by pdooley; Oct 18, 2010 at 05:24 PM.
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Old Oct 18, 2010 | 06:48 PM
  #4  
southbay08's Avatar
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From: Rockville Centre, NY
Re: 91 Camaro 3.1 spark problem

we can help you out with a set of injectors. You can pm or call us at 516-492-6504

www.southbayfuelinjectors.com
info@southbayfuelinjectors.com
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