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Wayne, RV Mechanic
Category: RV
Satisfied Customers: 9529
Experience:  Work on several type of Rv engine, Trans, brakes
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I have a 2006 400isl cummings had a no start condition. only

Customer Question

i have a 2006 400isl cummings had a no start condition . only started with wd 40 after a few cranks changed all filters started no problem . ran a couple of hours no problem stalled out backing in to my spot . would not start couldnt hear the lift pump run. after a couple of hours sitting it started right up. what do do next?
Submitted: 2 years ago.
Category: RV
Expert:  Wayne replied 2 years ago.


I'm Wayne

I will help you with this

Replace your lift pump,

I have seen this several times

it gets weak, and lets fuel drain back

but the check valve at filter holds that prime

I suggest to replace Lift Pump ..........

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Customer: replied 2 years ago.
Hi wayne i changed my lift pump and relay . now there is no power going to the relay and my wait to start lamp does not lite up?
Expert:  Wayne replied 2 years ago.


did you check all your breakers and fuses

this just happen after you replaced the relay,

go back and check that the terminals did not get pushed

out of the socket