After 235,000 miles untouched, my truck now won't start after running perfectly the day before. Thinking it was a fuel problem, I changed the filter and then ran it through several cycles to pump fuel back in the filter--no fuel. I then replaced the fuel transfer pump and fuel began flowing. I checked the banjo fitting at the injector pump--fuel. Still it does not start. I loosened several high pressure lines at the injectors and get a slight oozing of fuel at those fittings. Still no start. What I don't know is, how much fuel should be leaking from the injector fitting? How do I test for a bad injector pump? I really don't want to buy a new injector pump just to find out it was a fuse or sensor somewhere else that was the culprit. By the way, no trouble codes have come up. Please help me figure this out.

P.S. It is a 1999 24 valve Turbo Diesel

 

Cycle key on and off three times. On the last leave it on and report the codes back here. it probably is a VP

 

check codes first. Could it be that you are not cranking enough? The VP pump's can be a real bear to start after running dry/filter change.

 

A 1999 won't give you the code through the odometer. You'll have to connect a code reader to get the codes.
Crack the first injector line and turn it over. You should get fuel squirting out with some force. Not enough to take your finger off, but enough to feel it if your hand is near. If no, make absolutely sure that you are getting a good fuel supply to the VP44. This means verifying the fuel is getting to the VP44. You can crack the banjo fitting on the VP44, where the fuel line goes, then turn the key on to see is fuel squirts out.
It is likely that you have air trapped in the fuel system, moreso than your VP44 has a problem. Bleeding that air out can take a while. I have had to loosen as many as 2 injector lines and turn it over for a while to get the air bled enough that it would start. Usually I can do it with one line cracked though, even when changing the VP44 out.

Chris

 

.....my $$ on pump.

 

I've checked the error codes now and get 1688 and 1689--both point toward the VP44. I've also verified that I'm getting power to the VP44 when the engine is turned on. Thank you to STAMEY for giving me a better understanding how a loosened injector should leak. Now it's time to put my $$ on a new pump.