ryanihf250

I am catching air somewhere but I can not find a fuel leak anywhere. It skips at high rpms. When it sits for awhile sometimes it catches air and will not crank up. I have to crack the injectors to get the air out and runs fine. Today warming up idling it caught air and shut off. I don't have an idea of where to start looking. This started after I took the top off the pump to see how the new cut fuel pin was doing. The top is tight on the pump.
Would a bad lift pump cause this?

wannadiesel

It could. Lightly pressurize the fuel tank to find air leaks - they become diesel leaks when you take a blow gun and a shop rag and shoot a few quick blasts in the filler neck.

93beater

i have the same problem just not as bad, mine wont shut off but is hard to start when cold, go with what dave said and pressurize the tank and follow the fuel lines to find the leak

ryanihf250

Thanks for the help. I will try that.