6.5 diesel

[geokome]

I have a 1998 GMC haul vehicle with a 6.5 GM diesel. Put a new drop in engine and at 5000kms it broke the crank? No warranty over 1 year Anyone have any idea why this would happen ? broke in two places near the front. The engine ran good then was just hard to start one day and knocked when shut off. anyone else experience this?

Thanks
Geo

[mopar1968]

Well from working on Cummins, Cat,Powerstroke, I would have to say a injector hung open hydrolocking cylinder, filing up with fuel, When you shut engine down it made a quick snap backwards breaking crank.


''JUST MY TWO CENT'S WORTH''

[cepx111]

Awe yes, back in my dealership days I've seen that happen a few times.

Broken crank, bent the rods....the usual