7.3 IDI STARTS AND IDLES OK...BUT WHEN I TRY TO DRIVE DOWN ROAD FUEL FILTER LIGHT COMES ON AND ENGINE DIES......SEEMS LIKE ITS SUCKING AIR, NEW FUEL PUMP, NEW INJECTOR PUMP, NEW RETURN LINES...NOW WHAT?

 

Sending unit ?

 

NOT SURE HADNT THOUGHT OF THAT...WHERE IS IT LOCATED?

 

in the tanks.


also just cause it is a new pump doesnt mean anything. need to check fuel pressure at the fuel filter. should be around 7 psi.

 

OK THANKS GUYS...OH AND IVE READ MANY OF YOUR POSTS CRAWLER...THANK YOU FOR ALL THE VALUBLE INFO.

 

Welcome to Diesel Bombers, Stick around, there are some very knowledgeable guys around here willing to share their information.

By the way, It's easier on the eyes if you type without CAPS all the time...

 

no problem bud, i love these trucks, will be IDI for life. haha.

 

More problems..leaking fuel from heating element on top of filter housing...replaced o rings but fuel leaking through the middle of plastic..just ordered new one..set back $180...still seems to be sucking air..could it be in crossover for the dual tanks?

 

there is no crossover for the tanks. get all your leaks fixed first. any leak, feed or return side, will cause air intrusion and running issues.