B7500 fuel pressure?

[jaymee01]

I have a 2002 b7500 that won't start. A little history... it would on occasion, while driving it, it would bog down, low to no rpms,almost like it was running out of gas. This happened several times over a few months. It would always pick back up and run as normal, at least until it happened again. Then one day, sever months ago, I started it up and it ran as normal for 10 to15 seconds, then died. It hasn't started since. I replaced the glow plugs and still won't start. New battery since the old was, well old. I started tracing fuel and noticed only a trickle out of fuel pump. I just received a new pump and put it on and lots of fuel out of it now. Reinstalled the fuel line going to injector pump and still no start. I open one fuel line at the injector and only a small amount comes out. I did drain the fuel tank just in case I had bad fuel . Filled with fresh diesel. The book says to bleed the system, start it and let it run for 30 seconds but thats not happening now. What is the pressure at the injectors supposed to be? I would imagine more than a trickle. The fuel pump has plenty leaving it and going into the injector pump.

Ideas? I hate to buy an injector pump, if that isn't the problem.

Thanks for the help. Ask any thing I left out.

Jaymee

 

[mendonsy]

A couple of suggestions:
1) Check to make sure you have all of the air out of the fuel lines between the fuel filter and the injector pump.
2) Inspect the lines between the fuel filer and the injector pump for any minor leaks. It doesn't take much of a pinhole to get air into the injector pump.

 

[North Idaho Wolfman]

You need to crack all of the fuel lines right at the Injectors.
You crank it till you get good fuel without bubbles.
Then tighten the lines.

 

[Russell King]

While you are bleeding to the injectors, crank for 30-60 seconds and then let the starter cool for a couple of minute. Repeat a few times and then let the starter cool down completely so it is just warm to your touch.

When you think you are done do it at least one more time.

oh and set the throttle to full speed while bleeding it.

 

[jaymee01]

I will try the cracking all the lines and bleeding them, with the crank, and let started cool etc..thanks for the advice. I will let you know.

Interesting thing, I never had an empty tank until after this started. Maybe the fuel pump went bad and I have air in the system now? Hmm. I am hoping this is all it is!

Thank you!