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CATEGORY LISTINGS > INTERNATIONAL > 89 DT360 LOOSES PRIME WHEN SHUT DOWN [ REFRESH ]
Thread Title:

89 DT360 LOOSES PRIME WHEN SHUT DOWN


Created On Thursday March 09, 2006 20:27 Diesel Talk
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WTS
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Joined: Mar 2006

Note Thursday March 09, 2006 20:27 View thread in raw text format
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PROBLEM STARTED WITH NOT STARTING WHEN PARKED ON A GRADE . NOW IT LOOSES PRIME EVERY TIME I SHUT IT DOWN.I HAVE TO CRACK OPEN BLEEDER AT PUMP AND PUSH PRIMER BUTTON 10+ TIMES AND ITS FINE UNTIL I SHUT IT DOWN AGAIN. IT HAS A BOSH PUMP AND DUAL TANKS. I CHECKED ALL THE FITTINGS AND THE CHECK VALVE . IS THERE MORE THAN ONE CHECK VALVE? COULD THE BRAIDED DELIVERY LINES FROM THE TANK BE DRAWING AIR? IT HAPPENS EVEN IF YOU SHUT IT DOWN FOR 5 OR 10 MINUTES.

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W.T.S
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nevrenufhp
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Joined: Sep 2004

Note Sunday March 12, 2006 16:41 View users profile View thread in raw text format
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It could, and probably is what's happening. You'd be saving yourself trouble down the road if you replace all the rubber lines that are between the injector pump, fuel filter, and lift pump. My '94 DT466 did the same thing a few years ago.

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low buck "turn up the fuel" site:
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Roadwrench
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Joined: Aug 2007

Note Friday August 24, 2007 18:22 View thread in raw text format
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Not sure if your system is the same as a DT 466 but two things that I can think of quick here that may be your problem.................. IF THE SAME FUEL SYSTEM IS YOUR CASE..........


(1). Just before your fuel filter there should be a pre-filter (Little plastic thing) that you can unscrew and check for sediment and debris. Right on top of that pre-filter there is a tiny (about the size of a dime) cap. Looks like it has an X on the top of it. Unscrew that and check the condition of the little ball check valve in there. Too many times I've seen it to be badly deteriorated and non functional. It actually helps hold fuel pressure in the system when the engine is shut down.

(2). On the back side of the head (and you have to remove the dog house to get to this) there is another check valve that goes bad every now and again. If I recall correctly it will be towards the left center of the head. Follow the fuel lines from the filter back (You can't miss it) Check that for issues.

Other than that I can't think of anything obvious that would cause your problem.

Hope this helps.

Post back and explain what you find anyways so it may help others in the future

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Jimmy http://www.roadwrench.com
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