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Curtis B.
Curtis B., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 26055
Experience:  Technician turned service manager on multiple lines of trucks and engines, used in industry.
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How to tell if fuel pump is bad on 3046 cat engine d-4 c

Customer Question

How to tell if fuel pump is bad on 3046 cat engine d-4 c
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Curtis B. replied 1 year ago.

To check the fuel transfer pump, open the bleeder after the pump and see if you get fuel when pumping. If you do, the transfer pump is working.

Expert:  Curtis B. replied 1 year ago.

The injection pump, if it has fuel to it, has to have the fuel in the open /run position. If it has electric fule solenoid, is it opening? If it has manual shutoff, is lever in run position? If injection pup is in run, and you have no fuel squirting fro injection high pressure lines when cranking, then the injection pump is bad. Fuel has to be squirting at the high pressure lines, not just dribbling!

Expert:  Curtis B. replied 1 year ago.

Any smoke from exhaust when cranking? No smoke, no fuel to the cylinders.

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