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2000 GMC Sierra Misfire cylinder 2

Tiny
SPIEGELF
  • MEMBER
  • 2000 GMC SIERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 107,000 MILES
I have a misfire on cylinder 2. I have replaced the cap rotor, wires, and plugs. The misfire sounds like it come from inside the cap. I just had the intake gaskets replaced along with the valve cover gaskets. The vehicle has a throttle body on it.
Thursday, August 13th, 2009 AT 5:32 AM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

If you ave replaced the intake gasket, you may have a vacuum leak there still, start here.

Mark (mhpautos)
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Thursday, August 13th, 2009 AT 6:01 AM
Tiny
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Could this be from not torquing enough?
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Thursday, August 13th, 2009 AT 9:53 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Could be or a portion of old gasket stuck that you did not see, spray a little starter fluid over the joint while running if the revs pick up you have found a vacuum leak.

Mark
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Thursday, August 13th, 2009 AT 5:12 PM

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