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What's my misfire from?

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Old Dec 13, 2002 | 04:29 PM
  #1  
WhynotSS's Avatar
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Staging Lane
 
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From: Fullerton, CA
Default What's my misfire from?

I just got my car started after a horrible cam install. I dropped a lifter and had to pull the driver's side head. When autotapping it, I found misfires in almost all of the cylinders. There's probably about one every 20 seconds. This was all at idle.

Could it be that my fuel injectors are dirty? What could be causing the misfires?
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Old Dec 13, 2002 | 05:05 PM
  #2  
66LS1NOVA's Avatar
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From: OVERLAND PARK KS
Default Re: What's my misfire from?

A MULTIPLE CYLNDER MISS IS MORE THAN LIKELY NOT DIRTY INJECTORS (ALL AT THE SAME TIME?) CHECK O2 SENSORS SEE IF THEY ARE SHOWING LEAN OR RICH AND GO FROM THERE, MOST LIKELY IS A VACCUM LEAK INDUCING TOO MUCH AIR INTO SYSTEM, HAS THE COMPUTER BEEN MODIFIED TO MATCH YOUR CAM? IF NOT THE PULSE WITH AT IDLE MAY NOT BE ENOUGH TO SUPPORT THE CAM CHANGE GOOD LUCK!!
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Old Dec 13, 2002 | 06:45 PM
  #3  
WhynotSS's Avatar
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Staging Lane
 
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From: Fullerton, CA
Default Re: What's my misfire from?

The misfires are only happening at idle so it must be a computer thing. Thanks.
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Old Dec 13, 2002 | 10:40 PM
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wrencher
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From: Chicagoland
Default Re: What's my misfire from?

If you got a big enough cam that causes a lope at idle that will give you missfire codes.
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