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Many things-Burnt or Broken Intake or Exhaust Valves.Broken Compression Ring,Bent Push Rod,Pumped UP Hydralic Lifter,Hole in Piston or Block,,OR EVEN a small Piece of CARBON that has come loose from the Compression chamber & has gotten STUCK UNDER one of the VALVES.or a broke Valve Spring.or keepers fell off.Broken conecting Rod.

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โˆ™ 2015-07-15 18:37:44
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Q: How can you fix the number one cylinder that has no compression?
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Each cylinder needs fuel, compression and spark. You are missing one of those.

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