Diesel Air Lock?
After being parked six days,our DP Motor home refused to start this morning! More accurately…it started but killed when I put it in Drive. Tried multiple times with the same result… couldn’t get mor...
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I had a school bus that would start ok after sitting for a few hours, but leave it set overnite and you would have to prime the filters and pump the hand pump to build pressure back up and it would start.. After removing the check valves in the fuel line (It had three of them if I remember right) I found one had a small piece of rubber o-ring material holding it open.. Replaced check valve and all was fine...
