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Jackie Dempsey
Jackie Dempsey,
Category: Medium and Heavy Trucks
Satisfied Customers: 30
Experience:  Diesel Technician at Cummins Pacific
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2005 cummins ISX in a International. Runs good, but hard to

Customer Question

2005 cummins ISX in a International. Runs good, but hard to start. Elec pump runs when key is turned on. Put Fuel psi gauge on quick test fittings.... there are 3 on fuel rail. one on top right gets 15 when elect pump runs, one on bottom left gets minimal when pump is on and while cranking it builds to 80 and that's when it starts up. pressure then goes to 200+. Is there a check valve, regulator fitting or somthig not keeping fuel to cyl head. need a diagnostic procedure to ck this fuel system.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Jackie Dempsey replied 1 year ago.

Hello! Thank you for choosing Just Answer! I would like to start off by asking for your 8 digit engine serial number please

Customer: replied 1 year ago.
Expert:  Jackie Dempsey replied 1 year ago.

Thank you, ***** ***** any fault codes present?

Customer: replied 1 year ago.
Expert:  Jackie Dempsey replied 1 year ago.

Attached you will find some troubleshooting trees for diagnosing the fuel system. Please let me know if you have any questions! When you are ready please take a moment to rate my service for today. Thank you!