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Old 09-06-2011, 05:05 PM   #1
bpogue
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DT466 fuel system question

Up until recently my truck has always started up just as soon as you hit the starter. Now most days it will start up then die immediately. After about 30 seconds of cranking it will start up and then run fine. This happens almost every time it sits for more than a couple hours. I assume it is losing prime somewhere. Does anyone know of a check valve that may be leaking back or anything else that would be a likely place to start?
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Old 09-07-2011, 03:14 AM   #2
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the bleeder is one place, or possibly the filter itself. You could pressurize the tank with 3-5 pounds of air. That would generally expose leaks.
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Old 09-10-2011, 02:32 AM   #3
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There is a check valve under the plastic cover behind the fuel filter, above the fuel strainer and between the filter and fuel connection. Remove the cap, looks like "+" and is pretty easy to remove. There must be a round plastic ball in there that is really round. If missing or deformed, replace it.
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Old 09-12-2011, 12:17 AM   #4
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Quote:
Originally Posted by John_G View Post
There is a check valve under the plastic cover behind the fuel filter, above the fuel strainer and between the filter and fuel connection. Remove the cap, looks like "+" and is pretty easy to remove. There must be a round plastic ball in there that is really round. If missing or deformed, replace it.
Thanks. I'll check it tomorrow when I get to the shop.
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1996 Int 4700, 175hp DT466, 5 speed, 2x rear end, service body

2001 F350 SRW flatbed, 4x4, crew cab

1978 International F2275 Dump Truck

1996 NH LX665, steel tracks on foam filled tires

2005 Tackeuchi TB145

2003 Takeuchi TL150

Case 850B Highlight, 4 way bucket
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Old 09-16-2011, 01:24 AM   #5
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Quote:
Originally Posted by John_G View Post
There is a check valve under the plastic cover behind the fuel filter, above the fuel strainer and between the filter and fuel connection. Remove the cap, looks like "+" and is pretty easy to remove. There must be a round plastic ball in there that is really round. If missing or deformed, replace it.
On the rear of the filter assembly I see a tube about the size of a quarter and about 2 1/2" tall. It looks like it screws into the filter base. It has vertical ribs on it. I have tried to turn it, but am afraid to give it a good turn because it is plastic. Is this the right thing I am looking at? Does it unthread, or turn a little bit to unlock it and then drop out? Or is the check valve on top? There is steel tube sticking up with a rubber cap on it.
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1996 Int 4700, 175hp DT466, 5 speed, 2x rear end, service body

2001 F350 SRW flatbed, 4x4, crew cab

1978 International F2275 Dump Truck

1996 NH LX665, steel tracks on foam filled tires

2005 Tackeuchi TB145

2003 Takeuchi TL150

Case 850B Highlight, 4 way bucket
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Old 09-16-2011, 09:58 AM   #6
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look on top for the check ball-under the "+" cap, youll see it, loosen the cap and the check ball is under it, will need a pick or something to get it out, the tube you are talking about should be the "rock catch", you can un screw it and clean it out also, it catchs a lot of debris, should be catched at every service also, it has a screen in it that goes in the same way it comes out.
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Old 09-17-2011, 01:38 AM   #7
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Quote:
Originally Posted by mrdevildog View Post
look on top for the check ball-under the "+" cap, youll see it, loosen the cap and the check ball is under it, will need a pick or something to get it out, the tube you are talking about should be the "rock catch", you can un screw it and clean it out also, it catchs a lot of debris, should be catched at every service also, it has a screen in it that goes in the same way it comes out.
Thanks. I'll check them tomorrow morning.
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1996 Int 4700, 175hp DT466, 5 speed, 2x rear end, service body

2001 F350 SRW flatbed, 4x4, crew cab

1978 International F2275 Dump Truck

1996 NH LX665, steel tracks on foam filled tires

2005 Tackeuchi TB145

2003 Takeuchi TL150

Case 850B Highlight, 4 way bucket
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