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cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3543
Experience:  All types of Cummins applications
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V504 CUMMINS COMPLETE REBUILD RAN WELL ON DYNO BREAKIN NO

Customer Question

V504 CUMMINS COMPLETE REBUILD RAN WELL ON DYNO BREAKIN NO BLOWBY OR SMOKE
ENGINE WAS INSTALLED IN A HOBART GROUND POWER UNIT AFTER A FEW WEEKS
FOUND THE MUFFLER FULL OF FUEL. REMOVED INJECTORS HEAVILY CARBONED
AND FUEL LEAKAGE AT EXHAUST PORTS ONE CYLINDER IS SCORED ON BOTH SIDES
ANY IDEAS AS TO CAUSE ?
Submitted: 12 months ago.
Category: Medium and Heavy Trucks
Expert:  cumminsdr replied 12 months ago.

Yes , You had a failed injector If you replaced Them at overhaul as you should of you can claim recon warranty , the injector failed and over fueled the cylinder causing a washed down the cylinder causing the scoring. Were all the injectors replaced? If so Contact Cummins for recon warranty and they will asist in the engine rebuild and parts that were failed. If not your on your own for the repairs. A part can fail at any time no matter what testing it has been thru. Or the shop that performed the Overhaul messed uo with installation and settimngs, You can go back to them as well and go thru Cummins for the failure/ Have the Cummins DFSE come out and perform a failure analysis. to find the root cause of the failure

Expert:  cumminsdr replied 12 months ago.

Please don't forget to rate my service

Customer: replied 12 months ago.
ALL EIGHT INJECTORS BADLY CARBONED
Customer: replied 12 months ago.
ALL EIGHT ARE BADLY CARBONED
Expert:  cumminsdr replied 12 months ago.

Sounds like they were not set correctly

Expert:  cumminsdr replied 11 months ago.

Please don't forget to rate my service

Expert:  cumminsdr replied 11 months ago.

Just following up. Please don't forget to rate my service

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