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Ask Fix-it.. Your Own Question
Fix-it.., Commercial Transport Technician
Category: RV
Satisfied Customers: 1232
Experience:  15 yrs. experience as Class A Motor Home chassis specialist.
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I have a 350 isc Cummins in my motorhome. In the last month

Customer Question

Hi Joe, I have a 350 isc Cummins in my motorhome. In the last month I noticed when I start it in the mornings it would idle as if it's running on 4 cylinders. I would depress the accelerator and no response in the rpm. It would warm up between 5-10 minutes and the engine would finally idle normally and I'm able to depress on the accelerator and the rpm would rise accordingly. The fuel filters were changed around 8 months ago. Should I start with changing filters, adding additives the fuel initially see if that works.
JA: Is the fuel filter an external one, or is it inside the tank?
Customer: I had a truck repair service to the maintenance
JA: What is the model/year of your RV?
Customer: 2002 National Tradewind
JA: Are you fixing your RV yourself? What have you tried so far?
Customer: It would depends if it's to technical for or not. At this point I am researching to make a decision
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 9 months ago.
Category: RV
Expert:  Fix-it.. replied 9 months ago.
Good evening
Yes doing the fuel filters first is a good call, with any any hard start complaint,
Does the check engine light ever come on?How many days does the coach sit when it becomes a issue?
Customer: replied 9 months ago.
No check engine light.
Customer: replied 9 months ago.
The motorhome goes out twice a month.
Customer: replied 9 months ago.
In the last 2 days it's been every morning
Expert:  Fix-it.. replied 9 months ago.
Let's try the fuel filters filter, always good to eliminate, if you do and there is still a issue then there is the next big offender with this engine is the lift pump.
Expert:  Fix-it.. replied 9 months ago.
Let me know how you do.
Expert:  Fix-it.. replied 9 months ago.
Good evening
I haven't heard from you Do you have any other questions?
Customer: replied 9 months ago.
I received your answer and will start with the filter and hope it ends there. Thanks for confirmation on where to start first.
Expert:  Fix-it.. replied 9 months ago.