Medium and Heavy Trucks
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There should be a check valve on the outlet side of the ECM cooling plate. It is internal to the fitting that provides the fuel to the filter or fuel pump.Review the pic of the location that I have attached
yes It is the primary cause of your issue.
Parts can fail at any time. Changing the ECM would not cause a cranking issue with out fault codes. It's electronic.
Its possible. There is only a rubber seal in the check valve that allows fuel to only pass one way.
If it has been failed for a while, it puts extra strain on the main fuel pump Just a FYI
Hi Just following up,Please don't forget to rate my service
Please don't forget to rate my service.
Please don't forget to rate my service