How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask sevn103 Your Own Question
sevn103, Journeyman
Category: Heavy Equipment
Satisfied Customers: 275
Experience:  Cummins,International certified diesel mechanic
Type Your Heavy Equipment Question Here...
sevn103 is online now
A new question is answered every 9 seconds

Cummins..highway, Code 482 (low fuel pressure)..solenoid

Customer Question

Cummins isx in 2001 Pete 378. Stopped suddenly on highway, Code 482 (low fuel pressure). Have replaced fuel filter, pressure sensor beside filter, electric lift pump, have checked operation of fuel solenoid. Sometimes engine will produce a bit of white smoke when cranked or maybe offer to fire a little but not enough to start. Running out of ideas, any help would be appreciated. Thanks.
Submitted: 6 years ago.
Category: Heavy Equipment
Expert:  sevn103 replied 6 years ago.
Can you check fuel psi? Check at pump and by filter you will need up to 350psi gauge
Customer: replied 6 years ago.
When cranking engine, fuel pressure near filter is erratic but always less than 100psi. By erratic I mean pressure fluctuates rapidly between approx. 50psi to 75 or 80psi.
Expert:  sevn103 replied 6 years ago.
You can try giving it a shot of ether to see what running psi goes to. If that psi is still low, you will need to replace fuel gear pump. Very easy to change only 4 torx bolts, and one fuel line.
Expert:  sevn103 replied 6 years ago.
Where you able to get this taken care of?
sevn103 and other Heavy Equipment Specialists are ready to help you
Customer: replied 6 years ago.
New gear pump solved the problem. Thank you very much sevn103!
Expert:  sevn103 replied 6 years ago.
Glad to hear