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Message: [QUOTE="strokin6L, post: 1092481, member: 842"] Sorry bud...I thought I told ya. Low compression on #3 after a manual compression test was done...85lbs was it...where as the others were 400-400+. Then did a leak down test to rule out piston rings for #3 piston. Come to find out...when #3 cylinder was pressurized...air kept pushing out the intake...and very little into the crank case. So we figured out the issue with my truck is either a bent intake valve or bad valve seat for an intake valve on #3 cylinder. I never over rev'd the motor...so I don't really think it's a bent valve, but idk. Either way...there's an intake valve on the passanger side head for #3 cylinder that isn't sealing/closing tight enough to seal when piston is at top dead center that is causing a P0269 code(contribution/balance) and a bad rough idle when up to temp. I actually just drove the truck tonight and put about 15 miles on it haha. [/QUOTE]

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