New injection pump,still no start!

[KRedd]

Have you read through the TM9-2320-280-20-1 w/c 2, Troubleshooting procedures? Is the return line from the injector open, not blocked as this causes an imbalance in the Injection pump and will not let it start. For example in the above mentioned TM check page 2-106. This is in the middle of the troubleshooting chain but you can look at the rest of it later. The TM's are available in Steelsoldiers. Hope this helps.

 

[05blackduramax]

Ok today had time to do some trouble shooting. Plugged off sensor on top of fuel filter housing no change. Replaced all rubber hose with new no change. Checked fuel pressure 10psi with gauge. Bypassed fuel filter housing no change. Pressurized fuel tank with a shop vac,found a good leak on top of the fuel tank. Iam not sure what's up there leaking. I will try and drop the tank tomorrow night.

 

[Action]

An air leak on top of the tank should not put air into the fuel lines unless the leak is on the suction tube / line. A gasket leak would be no different than opening the filler cap.

 

[05blackduramax]

Well when I took the suction line off at the lift pump I only got a few drops of fuel out of it. I still need to drop the tank to see what's going on up there.

 

[1 Patriot-of-many]

You'll get it narrowed down. If you are getting airs after bypassing the filter and having a clear line seeing them at the bypass, then it's somewhere in between the filter and where the line draws from the tank. Keep it up, you'll find it.

 

[05blackduramax]

Ok so tonight I dropped the fuel tank the supply line on top of the tank was only in about two or three turns. I believe this is were the air was coming from it is late didn't want to wake the kids. I will attempt to start it tomorrow afternoon.

 

[Volvo740turbo]

Even with a little air it should run just like crap...dont discount installing a new lift pump. It solved all my starting and running issues. I didn't bleed any air after I changed it and it only took 5 short tries for the truck to start afterwards. Hope you can figure it out, good luck to yah

 

[05blackduramax]

I have a new one sitting hear.

 

[Volvo740turbo]

Sitting or installed? I got mine from napa it was the only one they had available, I heard not so good things aboit the fitment but mine works just fine

 

[Volvo740turbo]

I have a new one sitting hear.

If it's not installed be sure to fit the hard line BEFORE bolting it to the block ...keeping the push rod in a position to install it is a pain in the butt

 

[05blackduramax]

My new lift pump is not installed yet. Got home it took a few tries lots of white smoke then black smoke and it fired up. Runs good. Thanks for all the help everyone.

 

[Guyfang]

Good to go!

 

[Volvo740turbo]

My new lift pump is not installed yet. Got home it took a few tries lots of white smoke then black smoke and it fired up. Runs good. Thanks for all the help everyone.

Did you have any pictures.by chance?

 

[1 Patriot-of-many]

Excellent. Knew air was the issue here Don't forget to remove any clear line you installed while troubleshooting soon, from what my auto parts place said, not so sure it's resistant to diesel. Great feeling isn't it?

 

[05blackduramax]

I can take pics what kind do you want?

 

[05blackduramax]

Ya it's great to finally hear it run.

 

[05blackduramax]

 

[1 Patriot-of-many]

Ya it's great to finally hear it run.

+ you have an extra injector pump

 

[doghead]

My new lift pump is not installed yet. Got home it took a few tries lots of white smoke then black smoke and it fired up. Runs good. Thanks for all the help everyone.

SO, did your change your lift pump, then it started?

Or, you just tried again and it started?

 

[Volvo740turbo]

I can take pics what kind do you want?

The top of the tank lol...im.guessing it's too late now haha