Fuel not getting to the engine

[MASIC]

Yes the 20 cover the replacement of the hoses' But no place in the trouble shooting dose it cover them as being , or could they be a problem . MASIC nice looking truck, but I think you need one more upgrade. Your hand grenade is out of date.

I agree on the hand grenade she is old but it’s still a lot of fun. I like classics!

 

[crasheej]

Control box problems , you don't hear the clunk when you turn on the power switch is a bad sound. Then it is time to get out the multimeter out and go to checking out where did my juice go too. They have been covered in other threads.

 

[pctrans]

To pressurize your tank, check out my thread...
http://www.steelsoldiers.com/5-ton-up/56387-nifty-tool-fuel-leaks.html

 

[Rgdl]

To pressurize your tank, check out my thread...
http://www.steelsoldiers.com/5-ton-up/56387-nifty-tool-fuel-leaks.html

What a great idea!!

So today I used duct tape to cover the fuel filler neck on the right tank and pressurized the tank using a small compressor that plugs into a cigarette lighter. I repeated this test on the left tank. I found fuel leaking at the fuel filter drain petcock. A friend stuck his thumb over the petcock hole to "seal" it and I attempted to start the truck. She started. The truck continued to run, albeit rough after he "unsealed" the filter drain. I bought a new petcock and installed it but it's still leaking. The old one looks like it had some red material on the threads - I'm thinking this might be locktite. There was no rubber "O" ring on either petcock.

So it looks like I may have the problem licked if I can figure out how to seal the threads somehow. What would you guys recommend?

 

[crasheej]

The red stuff was thread sealer. You did use some to before you put the new one in ?..

 

[doghead]

Use a fuel rated thread sealant on the petcock.

 

[LanceRobson]

Do I remember correctly that there is a fuel filter built into the IP? If son, has anyone ever had an issue with it?

Lance

 

[Rgdl]

The red stuff was thread sealer. You did use some to before you put the new one in ?..

Very helpful post Hombre.

Use a fuel rated thread sealant on the petcock.

Thank you Doghead. I'm crossing my fingers that once I do this my fueling problem will be solved.


One more observation from yesterday I forgot to mention in my last post. When the clutch pedal is depressed the linkage is pressing down on the rubber fuel line between the filter and the pump. It bends the tube downward approx three inches, chafing the hose at the contact point as well as chafing where the hose makes contact above the truck's frame. Can someone check next time they're with their truck to see if this hose is routed above or below the frame. It seems to me that I need to replace this hose with one a couple feet longer and route it below the frame to avoid this issue. I will take pics next time I'm at the truck to better explain the issue.

Until then, here's a random pic of the truck.....

 

[WillWagner]

Do I remember correctly that there is a fuel filter built into the IP? If son, has anyone ever had an issue with it?

Lance

Yes there is, but it is not a service item. It is there solely to stop any debris from an internal fuel pump failure from reaching the injectors. All it is is a stainless screen filter with a magnet inside it. It is the only "filter" I have ever seen that flows from the inside to out.

 

[crasheej]

Take a look in TM 10 page 3-15 that shows the filter. If yours is like mine when i got it the elbow was pointing almost straight up. Loosen the nut next to the filter and point the hose and fitting as close to frame as you can that should take care of it. but it dose go on top of the frame. make sure you get the nut tight or you will have leak.

 

[MASIC]

Trust me! If you add a swing check valve (a brass valve found at a hydraulic fitting shop) to the injection pump side of your fuel filter you will never have to prime your fuel line to the injection pump when changing your fuel filter. Just add fuel to the filter cup, screw into position and fire the truck right up. This check valve also keeps fuel from draining back to the filter housing when the truck is sitting for a while. The one I bought has a ¾” NPT thread at each side. This check is also a full flow check and not a restriction in the fuel system. I use a loc-tite brand PST paste to seal my threads.

 

[Rgdl]

Trust me! If you add a swing check valve (a brass valve found at a hydraulic fitting shop) to the injection pump side of your fuel filter you will never have to prime your fuel line to the injection pump when changing your fuel filter. Just add fuel to the filter cup, screw into position and fire the truck right up. This check valve also keeps fuel from draining back to the filter housing when the truck is sitting for a while. The one I bought has a ¾” NPT thread at each side. This check is also a full flow check and not a restriction in the fuel system. I use a loc-tite brand PST paste to seal my threads.

Excellent idea Masic.

And that pic is very helping as I can see the proper routing of that hose.

 

[MASIC]

Excellent idea Masic.

And that pic is very helping as I can see the proper routing of that hose.

Your welcome