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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 4998
Experience:  Owner at DJ Wilson
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L have a 2001 c15 in t200 after I go down a ll (no throttle)

Customer Question

Hi l have a 2001 c15 in t200 after I go down a hill (no throttle) then start to push down throttle engine fills like it is misfiring .if I lift off throttle sometimes miss goes away if I push down further sometimes it will go away or truck will shake violently . But if I push in clutch and let Rpms drop to idle no miss engine runs good.this miss only happens after not using throttle for a minute or so.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 1 year ago.

HiCustomer My name is***** will be glad to try to help. What are you getting for fuel pressure now?

Expert:  Daniel Wilson replied 1 year ago.

It should be 75-90PSI at all times even under a load. If it is low it will cause the symptoms you are having. Potential causes are a faulty regulator in the filter housing ( Looks like a hex plug), Restrictions or leaks sucking air between the tank and pump, faulty transfer pump, etc. Let me know

Expert:  Daniel Wilson replied 1 year ago.

If that checks out ok you can have an injector with a mechanical problem. They can be tested using Cat ET software.

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