DT466 fuel system question

bpogue · 09-06-2011, 05:05 PM

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?

**nevrenufhp** · 09-07-2011, 03:14 AM

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.

**John_G** · 09-10-2011, 02:32 AM

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.

bpogue · 09-12-2011, 12:17 AM

Quote:

Originally Posted by John_G

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.

bpogue · 09-16-2011, 01:24 AM

Quote:

Originally Posted by John_G

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.

mrdevildog · 09-16-2011, 09:58 AM

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.

bpogue · 09-17-2011, 01:38 AM

Quote:

Originally Posted by mrdevildog

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.

09-06-2011, 05:05 PM	#1
bpogue Member Join Date: Feb 2007 Location: Missouri Posts: 355 Points: 25,983 Thanks: 107 Thanked 23 Times in 23 Posts	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? __________________ 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

09-10-2011, 02:32 AM	#3
John_G Super Moderator Join Date: Dec 2008 Location: Tyler, TX Posts: 4,247 Points: 32,431 Thanks: 101 Thanked 403 Times in 345 Posts	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. __________________ '93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal). Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote - Benjamin Franklin I vote for LIBERTY!

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09-16-2011, 09:58 AM	#6
mrdevildog Junior Member Join Date: Sep 2010 Location: arkansas Posts: 63 Points: 14,329 Thanks: 0 Thanked 8 Times in 8 Posts	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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