Engine/Transmission (1998.5 - 2002) 2nd generation ctd, Trouble starting

[Peter Schmitt]

I have a second generation ctd, 2001 6 speed 2 wheel drive. About a week ago

went out side to start my truck. She started and stalled. Then I pumped the throttle 2 or 3 times and cranked it for a minute till she started. I have 189,375

miles on her. Once she's warmed up she will start up no problem. I know about

vp44 bosch, also the primary pump failure. What do you guys think of the fass

ddrp-02 replacement pump w relocation hardware. I have a good friend whos head diesel mechanic for Penske. He said I should look for air in fuel filter, or air in fuel line. What are your thoughts, can you guys shed some light on my

situation. Thanks

 

[Bob Cochran]

I use the AirDog but Fass a good product as well. You can be sucking air some place loose connection, cracked hard or rubber fuel line, fuel draining out of lines, a lot of things. What you are experiencing the same thing as when you change injectors and have air in the lines. I don't think at this point it is so much it is starting because it is warm rather after the first start you have fuel and no air in the lines. Had the truck sit for awhile? This will help you understand if it is a big leak or a little one. All I can think of right now. Except if you have 189,375 miles on original OEM pump you AirDog on frame rail by fuel tank.

 

[HBarlow]

The correct way to diagnose your problem is to detach the fuel line from transfer pump to injection pump and turn on the key to measure pump flow rate. You probably have a failed fuel transfer pump. It will cost about $135 from a Cummins dealer if I remember correctly.

Why pump the accelerator pedal? Your engine does not have a carburetor or accelerator pump to squirt raw fuel.

 

[JLandry]

Peter,



Definitely change the fuel filter, especially if you don't know when it was last changed. It's a good practice to change it every oil change so you don,t forget it.



Next, you need to check the fuel pressure at the VP44 fuel inlet. Ideally you should have a fuel pressure gauge permanently mounted in the cab so you can monitor the pressure at all times. Anything above 5 psi MINIMUM under wide open throttle and full load is acceptable (although some pressure fanatics will argue for more).



After you connect a fuel pressure gauge, bump the starter with the ignition key (but don't start the engine) and leave the ignition on. This should cause the lift pump to run for about 25 seconds... you should be able to hear it. As soon as the lift pump starts to run, ideally you should see the fuel pressure sharply rise up to about 15psi and stay there. If it’s slow to rise or the pressure is low, that's a good sign the lift pump is worn out, the fuel filter is clogged, the fuel system is plugged, or there are air leaks in the suction side of the fuel system. Odds are it's the lift pump because that's the most common failure point.



Please keep us posted on how things work out.



John L.