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Case Tractors Discussion Forum

2470 fuel leakoff

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Bill Thurman

12-28-2009 19:27:44

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I have a 2470 that if it sets for a couple of days the fuel will leak off and it won"t start till you pump it back up, will the poppets in the fuel pump cause this, where do I need to look, Thanks

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12-30-2009 18:29:34

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 Re: 2470 fuel leakoff in reply to Bill Thurman, 12-28-2009 19:27:44  
Along with faulty primer, especially the newer "umbrella type", the brass return line tee at top,side,front of pump could have a leaking check valve, which is what I find most often. Tee is very $$$$ thru Caseih. Have gotten replacements from salvage and Spencer Diesel in Iowa.

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12-29-2009 05:38:05

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 Re: 2470 fuel leakoff in reply to Bill Thurman, 12-28-2009 19:27:44  
the hand primer pump on the injection pump has nylon disks in it that act as a check valve and will allow bleedback, over 10 years ago I dealt with the same problem on a 4490.

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