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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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super 88 diesel

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Mark Felton

11-11-2012 16:05:52

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I have a super 88 diesel that has a strange problem. On high rpms it starts to combustion knock and miss. It does'nt do it all the time. I thought it was an injector staying open. I swapped the injectors with 6 known to be good and no luck. This is a horrible knock with white and black smoke. It is fine at a brisk idle with a very slight miss. Energy cells are clear. The engine starts good hot or cold. I have drained fuel and filters and added fresh fuel. Any help would be appreciated.

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J. Schwiebert

11-12-2012 03:54:18

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 Re: super 88 diesel in reply to Mark Felton, 11-11-2012 16:05:52  
Do like johns said. Are you having sticking valves issues and on the same topic, weak valve springs?

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11-11-2012 19:43:57

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 Re: super 88 diesel in reply to Mark Felton, 11-11-2012 16:05:52  
start by taking the exhaust manifold off and see which cylinder the smoke is coming from.

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