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misfires with .032 but no misfires with.028 gap

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Old May 22, 2010 | 01:25 AM
  #1  
Racerx220's Avatar
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From: Philadelphia PA
Default misfires with .032 but no misfires with.028 gap

had the car about 4 months now and had the misfire issue on 1 ,2 and 3 gapping the plugs to the factory spec of .032 misfires like crazy with a gap of .028 little to no misfires any idea's why im pretty sure i don't have a chip but i don't know what the owners before me did
 
Old May 22, 2010 | 03:54 AM
  #2  
bradtyler02's Avatar
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From: Fort Irwin, CA
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If it works, don't worry about it... stick with the .028. Not sure if you're chipped, get a boost gauge. Normal, 8-10 PSI, chipped 15 PSI and up.
 
Old May 22, 2010 | 01:06 PM
  #3  
Racerx220's Avatar
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yeah i just put in a vdo gauge it peaks at 10 and drops to like 8 or so psi's
 
Old May 24, 2010 | 01:48 PM
  #4  
dragonrage's Avatar
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Year? It sounds like you may have a weak spark.
 
Old May 24, 2010 | 02:25 PM
  #5  
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It could be a sign of your coil packs starting to go bad...
 
Old May 24, 2010 | 04:01 PM
  #6  
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Agreed. Are you getting codes for anything other than misfires?
 
Old May 24, 2010 | 04:08 PM
  #7  
R.A.I. Motorsport's Avatar
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what plugs are you using?
 
Old May 24, 2010 | 08:33 PM
  #8  
A4 2000's Avatar
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From: Lancaster, CA
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I bought a set of plugs recently and at the autoparts store and they said that .028 is supposed to be recommended for stock 1.8T's. I had the same problem you had but I realized that my old plugs were at ~ .034. I just went ahead and set the new ones at .025 because I wanted to make sure the annoying misfires would go away completely.
 
Old May 24, 2010 | 10:28 PM
  #9  
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Don't use .025. It's doing your car a disservice.
 
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