5.9 problem

[richardreyn7]

i'm a new 5.9 turbo cummins motorhome owner. its a 1994 i got it in la,ca. i drove it to my home in stuart fl. about 2800 miles about 200 miles when i tried to start it it cranked a long tine before starting. it lost a lot of power. but it ran fine. when i stopped for lunch it would not start. a trucker took a rag soked with gas and stuck i it the air intake. it started right up but again a loss of power. can you help. thanks

[Steve Ownby]

Rich,

There's a fair chance that your fuel filter(s) are partially blocked. That's where I would start.

[Midniteoyl]

Print this and all the links on it and save it...

Troubleshooting the DODGE CUMMINS 5.9L (1994-1998):Ram Diesel Problems

[JDooley]

Change the fuel filter and be sure to bleed off any air. Always hav two soaked for both filters the water separator and engine mounted filter

[JDooley]

Spares not soaked

[Mekanic]

I have noidea about touch up paint. probibly a someone who sells holiday ramblers new. so,.... what happened with the power drop was it the fuel filter?

[richardreyn7]

i have a diesel gen. the fuel tank is full it was just serviced. it will run for about 1/2 hr. then slow down then shut down. the next day it starts up & the same thing happens. any ideas?

[richardreyn7]

hi, no it was in the trans push button unit. isent it to a guy who rebuilde them. it cost me 500.00. allison wanted 3000.00. thanks

[spike45]

Quote:

Originally Posted by richardreyn7 i have a diesel gen. the fuel tank is full it was just serviced. it will run for about 1/2 hr. then slow down then shut down. the next day it starts up & the same thing happens. any ideas?

If the filter is mounted on the suction side of the lift pump, remove the fuel filter when it shuts down. How full is it? If it is full to the top, it is plugged and needs replacing. If it is low, you have a restriction in the fuel line between the tank pick up and the filter inlet. Also, be certain the air vent hole in the cap is open. If it is plugged, the tank will be in a partial vacuum. It will act like the fuel filter is plugged but not have a full filter when you remove it to check it.

[spike45]

Quote:

Originally Posted by spike45 If the filter is mounted on the suction side of the lift pump, remove the fuel filter when it shuts down. How full is it? If it is full to the top, it is plugged and needs replacing. If it is low, you have a restriction in the fuel line between the tank pick up and the filter inlet. Also, be certain the air vent hole in the cap is open. If it is plugged, the tank will be in a partial vacuum. It will act like the fuel filter is plugged but not have a full filter when you remove it to check it.

I should have added that it is normal for a suction side filter to not be full when it is removed for some reason other than in this stated problem. Fill a filter with fuel and run the engine for several minutes then remove the filter. The fuel level will have dropped down near the bottom. On some engines, fuel filters use a stand pipe in the center tube to draw the fuel off the bottom of the filter especially needed when the filter is new. Those engines would experience hard starting or no starting after the fuel level dropped and the engine was shut down. On restart, often it was 'no start'.