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jim salsgiver
jim salsgiver, Mechanic
Category: Heavy Equipment
Satisfied Customers: 38
Experience:  13+ years mining and construction equipment repair. Rebuilding hydraulic components. all breaking
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1998 isuzu: diesel truck..highway..pedal and it will bog down even

Resolved Question:

i have a 1998 isuzu npr diesel truck and as i drive it on the highway, it bogs down, and when this happens, i can stomp on the pedal and it will bog down even more.....it seems to be getting worse.....what can cause this.....
Submitted: 5 years ago.
Category: Heavy Equipment
Expert:  jim salsgiver replied 5 years ago.
Is there alot of smoke when it bogs down, If so what color is the smoke? Is there a lot smoke when it idles?
Customer: replied 5 years ago.
i didnt get a chance to see if there was any smoke.. it was dark when it started tonight....but it does puff out some smoke when it is first cranked, but stops very quickly.....

i just filled up with diesel and on my way home it started bogging off and on.....it would bog from 65 to 60 and when i tried to mash the pedal it would bog down to 50... then it would slowly catch back up, and run fine for a bit and then bog down again, when it starts doing this i have a steady pedal....and i say bogg down, but to describe it better, it acts like someone shut off the fuel and cut it back on again a few seconds later.....
Expert:  jim salsgiver replied 5 years ago.

I would try changing fuel filters then go from there

Customer: replied 5 years ago.
what causes the symptoms...and possible remidies......the fuel filter was already on my list to change first.. is the fuel filters common to cause this kind of problem
Expert:  jim salsgiver replied 5 years ago.

yes filters are a verry common problem personally, when I ever run into power problems fuel and air filters are the first thing I look at. then look for possible fuel leaks because they will cause air to enter the fuel system. or a restricted fuel line. I also would check the speed sensor.

jim salsgiver, Mechanic
Category: Heavy Equipment
Satisfied Customers: 38
Experience: 13+ years mining and construction equipment repair. Rebuilding hydraulic components. all breaking
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