Originally Posted by sessions
Do you know how many miles are on that pmd or that injection pump? Those Injection pumps get 90,000 - 130,000 miles out of them. Not one of stanadynes best products. The most common symptom for the pmd failing is a hard starting hot issues. You could be sucking air into the fuel system some how.
The pump was replaced before I bought the truck, I believe that it should have less than 90,000 on it. I wonder where it could be sucking air... at other times its drives perfectly normal though, that's why I felt like it could be something electric. I hope its not the injection pump... I am running out of this to swap... Does it also have a pump in the tank? I have already changed the inline Lift pump on the frame rail.
How can I test the Injector pump?