Well, the mechanic I took it to said that he thought it was pretty much dead. Basically I have been losing the prime on this car and having a really tough time getting it back. The clear plastic fuel hose running from the back of the IP to the main filter has been showing air bubbles. I can pump the priming pump and the air bubbles don't seem to go away, so there is obviously an air leak somewhere.

I have replaced all the rubber fuel lines in the engine bay, but have not replaced the rubber lines that connect the diesel tank to the main fuel lines. Someone mentioned to me that I could try replacing the o-rings on the IP under the fuel valves. I don't know where to get them though. Any suggestions on where ti find them?