i have a 97 chevrolet 3500 dullay6.5l turbo diesel, just bought the truck drove 80 miles home truck ran awsome, went to start the truck in the am to drive to work and there was a big puddle of fuel under the tank. drove to work truck ran fine went to leave work another puddle under the tank and the truck started idled for 2 min and shut down got it to run few more times for no more then 10 15 seconds now will not start at all need help dont know much bout diesels first time owner.

 

loosen the cap on the fuel filter and turn the truck ign. on not the truck and see if your getting straight fuel no air. if your getting bubbles you have a leak possibly the tank or the fuel lines.

 

leak in the lines by fuel tank and on the fuel tank pulled the tank and fixing the line also think my pmd is bad ive heard they go bad often.

 

well if you seeing fuel on the ground buy tank most likey the lines bad or the rubber line between the tank and steel line leaks i wouldn't say PMD yet intill get fuel leak fixs

 

If you have a leak it's going to suck air when the pumps run witch will cause hard starting and the truck will run like crap and stall.

 

ixed the fuel leak there was a crack in the tank and a leaky fuel line so i patched the tank and put new rubber lines in. Started the truck it idled for 5 min and stalled started again and it stalled again so i ordered the pmd heat sink with the #9 calibration resistor, air intake and 4 inch exhaust. Ecm will be coming next month. Any issues with the heat sink setup? ordered it through ssdiesel. ssdiesel and heath have performance ecms which one is better?

 

those rubber fittings howdid u remove them?