I have had issues on a Cummins 4BT diesel engine
with air leaking into the fuel
supply. I have Racor
1000 filters above engine
level with a Holley Fuel pump
pushing into the engine which has the usual lift
An extremely well qualified diesel mechanic
advised not to worry about bleeding air out because the Cummins was "self bleeding" and while it might run a bit rough while doing so that it would continue running and eliminate any minor air in the lines.
Now i have to say that this has not been my experience with this motor
and that stoppage has been an issue such that i have installed a three way valve just before the motor
inlet to more easily drain any air.
I have gone through the air leakage stuff and have now eliminated the leak but this notion of "self bleeding diesels" still rumbles about in the back of my mind.
Any validity to this idea?
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