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Misfire problem located.

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Old Jun 14, 2007 | 02:33 AM
  #1  
khj677turbo's Avatar
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2nd Gear
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From: Tampa
Default Misfire problem located.

Finally i found the source of my misfires!!! It seems that 2 of my spark plugs werent tight enough. I noticed this because im in need of changing the valve cover gaskets and realized that there was a good amount of oil in 2 of the spark plug holes. Well the fact that the 2 spark plugs werent tight to spec, allowed for the oil to drip into the cylinder. When the spark plug isnt tight enough, the washer isnt set in, and the excessive amount of compression that comes when at full boost( where i was having misfires) cause the spark plugs to act as a check valve. Now that i cleaned it up, and tightened them down, it runs great. Just thought id share this experience.
 
Old Jun 14, 2007 | 09:08 AM
  #2  
Audi A Fizzle's Avatar
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Default RE: Misfire problem located.

I was also having misfire codes pop up, so when i went to remove my spark plugs to check them out there was a considerable amount of liquid in there. . . this cant be normal !???
 
Old Jun 14, 2007 | 02:23 PM
  #3  
acetrebo's Avatar
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From: Columbus Ohio
Default RE: Misfire problem located.

Good job superslueth!
Misfires can be hard to troubleshoot sometimes, thanks for posting what you found out.
 
Old Jun 14, 2007 | 07:44 PM
  #4  
kpatz's Avatar
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Default RE: Misfire problem located.

ORIGINAL: Audi A Fizzle

I was also having misfire codes pop up, so when i went to remove my spark plugs to check them out there was a considerable amount of liquid in there. . . this cant be normal !???
When you say liquid, do you mean oil? In the spark plug holes? If so, your valve cover gasket is leaking...

 
Old Jun 15, 2007 | 10:42 AM
  #5  
Audi A Fizzle's Avatar
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Default RE: Misfire problem located.

It was possibly oil, but it seemed like more of condensation of some kind
 
Old Jun 15, 2007 | 02:13 PM
  #6  
acetrebo's Avatar
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Posts: 3,393
From: Columbus Ohio
Default RE: Misfire problem located.

not good, could be a leaking head gasket - water/coolant leaking through.
 
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