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Diesel in my crank case!!!!

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James

03-27-2001 10:43:19




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The oil in my crankcase seems to be very thin. Is there a way that diesel fuel can get in there? I don�t think that I have a bad head gasket because I don�t have any blow by in the crankcase. Is there some way that it can get in there past the injector pump?
James




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Mick

03-28-2001 11:48:18




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 Re: Diesel in my crank case!!!! in reply to James, 03-27-2001 10:43:19  
Had that problem with a 3 cyl. Long I used to own. Rings and all were still good, push rods were not bent just wasn't firing in that cyl. and oil level kept slowly rising. Ended up being a broken lifter. After I dropped the bottom I found the broken parts.



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doug

03-27-2001 11:30:09




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 Re: Diesel in my crank case!!!! in reply to James, 03-27-2001 10:43:19  
What cha workin on?????



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James

03-27-2001 11:47:53




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 Re: Re: Diesel in my crank case!!!! in reply to doug, 03-27-2001 11:30:09  
Working on a John Deere New Generation tractor..... .. it's a 1520
Thanks
James



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david val

03-27-2001 12:58:29




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 Re: Re: Re: Diesel in my crank case!!!! in reply to James, 03-27-2001 11:47:53  
three most common places diesel can enter the crankcase are:
fuel transfer pump (torn diaphragm)
injection pump shaft seals (roosa master pump)
faulty injectors
remove transfer pump, apply low air pressure to the in port while plugging the out port inside a container of water. if there are bubbles coming out of the pump's flange then you have a perforated diaphragm. recondition or replace the pump.
if transfer pump is ok, the ijection pump shold be removed to check the shaft seals and bushing. be careful,seals are usually damaged when pump is fitted back on engine.
if injection pump checks out ok then have the injectors checked.
david

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James

03-27-2001 13:19:33




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 Re: Re: Re: Re: Diesel in my crank case!!!! in reply to david val, 03-27-2001 12:58:29  
Thanks for the info. I guess there is nothing better to do on a 57 degree rainny Texas day!!!
James



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Jim

04-07-2001 06:05:13




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 Re: Re: Re: Re: Re: Diesel in my crank case!!!! in reply to James, 03-27-2001 13:19:33  
.



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