05-30-2009, 10:17 AM
Timstrk Wrote:Apparently International has a service announcement addressing this very issue. Applied by them only to their I-6 engines. The Powerstroke uses the same type of injectors. This is what happens. Low fuel pressure, air in the fuel line (from any source) or one more cause that I can't remember since I closed the messege. This will cause the injector to not completly fill with fuel. When the hydraulic piston inside the injector fires it will slam the plunger inside violently to the tip and cause it to crack and/or break off. The plunger normally has a cushion of fuel to stop this from happening. With the fuel starvation, even once, the cushion is gone and its metal to metal. The announcement also stated that since it was not a defect in material or workmanship it is not covered by the warranty. He is replacing the fuel pump with a higher capacity and putting a pressure regulator on it to keep it from happening again. Sincerley hope this does the trick. I should get the truck back some time early next week. In the meantime, I've been driving the Bronco. I like the way heads turn to watch it go by.
Tim
Do you happen to know the specs on the fuel pump he's installing? Sounds like it may be a good upgrade if a chip is installed.
'72 TBA...