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Rough Running, Wont Idle
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TOPIC: Rough Running, Wont Idle

Re: Rough Running, Wont Idle 9 years, 8 months ago #15980

  • AgRacer
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Going to get a compression tester this afternoon and will likely end up having to pull at least the cam tower. I have a feeling I have a bent valve or two so I might end up pulling the head this week end. Looks like Ill be missing the Road Atlanta race next week end as a result.

Any suggestions on where to get some good lifters? While Im in there Im going to test/replace the ones that wont hold pressure. I also might need a complete head if anyone has one they would like to sell.
J. Stanley
NASA-SE Region 944 Spec Series Director
Yellow #60

Re: Rough Running, Wont Idle 9 years, 8 months ago #15983

I have a few set of lifters. Email me at eric dot kuhns at gmail dot com.
Eric Kuhns

National Director Emeritus

2007, & 2008 National Champion
2011, 2012 2nd

Re: Rough Running, Wont Idle 9 years, 8 months ago #15991

  • AgRacer
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Cam tower off after a leak down test showed complete loss of pressure on all cylinders. Visual inspection looks like I have floated valve seals.

I am guessing I shouldn't be able to see a rubbing ring with a spring (seal) pushed up the stem of the valve? Is this a valve seal that's been pushed up the valve?

EDIT: After removing the head, I confirmed that the exhaust valves are bent. It basically just looks like a love tap on the piston enough to not allow them to seat properly anymore.
J. Stanley
NASA-SE Region 944 Spec Series Director
Yellow #60
Last Edit: 9 years, 8 months ago by AgRacer.
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