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 2010 MAXXFORCE DT466 FUEL PRES.
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unclefish
Active Member

30 Posts

Posted - 02/15/2019 :  10:14:19 AM  Show Profile  Visit unclefish's Homepage  Reply with Quote
Have 2010 maxxforce dt466 , you can drive this bus 5 miles then it dies, get out pump it up and run another 5 miles. we have replaced all of those little hot wheel looking orings and primer pump and filter housing. we also pressurized it from fuel tank and looked for a leak under and around engine in bus. No leaks. let bus run in yard and will stay running all day. so just under load. replaced filters also. we us Baldwin filters and never had a problem. someone once told me there is small electric lift pump on these???5 to 10psi any idea where this is???

aaronwilmoth80911
Advanced Member

497 Posts

Posted - 02/15/2019 :  11:36:21 AM  Show Profile  Visit aaronwilmoth80911's Homepage  Reply with Quote
If the bus is a 2010, the emissions year may still be a 2007. The lift pump is right under or attached to the HPOP I believe. If it has the primer button, it is probably a manual lift pump (don't quote me on that). Have you had any plastic chunks in the filter housing? The pumps tend to break a check valve in there i think.
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unclefish
Active Member

30 Posts

Posted - 02/15/2019 :  12:00:07 PM  Show Profile  Visit unclefish's Homepage  Reply with Quote
International : MAXXFORCE DT 210HP/2600 GOV EPA 07, 210 HP @ 2300 RPM, 560 lb-ft Torque @ 1400 RPM, 2600 RPM Governed Speed, # 2 Bell Housing
( 0012NUA )
replaced the complete filter housing also
and yes the manual pump that we keep using to pump it up also was replaced. we have had issues with those also. I think I will have our guy just tow it here to this yard. he is 43 miles from me. would be a pain every 5 miles crapping out then pumping up.
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aaronwilmoth80911
Advanced Member

497 Posts

Posted - 02/15/2019 :  12:08:05 PM  Show Profile  Visit aaronwilmoth80911's Homepage  Reply with Quote
Ok, so the 07 emissions have a manual lift pump that i believe operates off the HPOP, think back to the 444s that had the lift pump in the valley. If you have found any plastic chunks in the filter housing, it is from the fuel pump. I know you said the primer pump was replaced, but i'm talking about the fuel pump itself. Other than that, i would look for a restriction in the tank maybe some sort of debris clogging the pick up tube.
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unclefish
Active Member

30 Posts

Posted - 02/15/2019 :  1:18:04 PM  Show Profile  Visit unclefish's Homepage  Reply with Quote
Thanks for info. I will call him and have him check.
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meanmechanic01
Active Member

30 Posts

Posted - 02/15/2019 :  6:26:30 PM  Show Profile  Visit meanmechanic01's Homepage  Reply with Quote
the fuel lift pump is always a suspect, but air pockets bleeding back into the fuel filter housing from bad injector(s) would cause the issue... we've also had one when the fuel tank was replaced and the vent tube was never re installed ontop of the tank, causing a vacuum on the fuel system... any codes?
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peter2019
Active Member

20 Posts

Posted - 02/24/2019 :  7:59:23 PM  Show Profile  Visit peter2019's Homepage  Reply with Quote
How it die? does it shake before die? it dies when driving or idling? engine light came on? any code? there are lot reason cause engine shut down, not just fuel problem.
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unclefish
Active Member

30 Posts

Posted - 02/25/2019 :  03:35:15 AM  Show Profile  Visit unclefish's Homepage  Reply with Quote
Vent tube is ok ,had to block it off when we pressurized tank.

They tell me no engine light comes on.

Waiting for them to bring bus here still. Its at 1 of our other yards.

Also thanks for the post remind me to call and find out what's going on.
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Bluenozer
Senior Member

Canada
103 Posts

Posted - 02/26/2019 :  11:08:56 AM  Show Profile  Reply with Quote
2010 should be maxxforce 9 or 10 or DT the fuel pump is right in front of the fuel filter, three little bolts hold it in and a six wire plug on top(I think) and a 2 wire sensor in the bottom, and pressure should be around 70 psi at key on it is audible till it meets pressure
dt466 and dt466e are a simple lift pump off the HPOP (7-14 psi) if it is a DT

OEM trained in wiring and all engine platforms for 20 years
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unclefish
Active Member

30 Posts

Posted - 03/06/2019 :  05:50:42 AM  Show Profile  Visit unclefish's Homepage  Reply with Quote
So we blew the fuel line backwards with air, and now it runs, my guess is something on the pickup in the tank. maybe tank is starting to rot from inside out. Or something got put in the tank that's not suppose to be there. Like the plastic cap from a diesel fuel additive bottle or a Dorito bag like we found in another IC tank.
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