Diesel Engine Runaway - 2005 Cummins
Here is something I have never heard of in all my years of turning wrenches and fixing stuff. Got a call, (multiple texts actually) from a close cousin yesterday. They had just got back from a nice...
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RAS43 wrote:1320Fastback wrote:
The old 2 stroke diesel I had back in the day had like a knife blade air door in the intake to stop it and beleive there was a factory air kill too.
Diesel runaways do happen.
Brings back a lot of memories. Detroit Diesel 2 stroke engines were famous for runaways back then. Either bad blower seals or piston rings could cause it to run on oil. That is why they had an air door on the intake with a pull cable into the cab or the air operated air valve you mentioned. Or a piece of plywood nearby our work station. Also, a runaway could happen if a mechanic set the fuel injector racks too right. That would be a fuel runaway. We kept a hammer nearby to break a fuel line to shut off the fuel and then shut off the air. :R
Yes, and the old Detroit 2 strokes would run backwards too. It wrecked the blower seals if you didn't catch it quickly. Other than the rig moving backwards in a forward gear it was pretty obvious since the cab (old cabover fire engine) would start to fill with black smoke!
