My truck is hard to start after sitting even for a short time.  I have replaced the washers on the banjo fitting back of the head, the seals on the T fitting, and the fuel line to the tank.

I just pressurized the tank with air there are no leaks I can find anywhere.  It has new injectors and new crossover tube O rings.still has the same problem.   No fuel in the oil.  Any suggestions from the experts?

1 hour ago, mountaindan said:

If I remove the fuel lines at the tank how much pressure would I be safe with applying to the lines back to the engine?

 

I would say stay safe at 20 PSI. Above that I can't tell you how much pressure it will take to blow the front seal out of the VP44 pump. Now if you capped the fuel line at the VP44 and then pressurize the line would be a different story. I would say then you can push it up to 40 PSI without damaging the plastic lines. 

On 11/3/2018 at 5:36 PM, Mopar1973Man said:

My straw is NOT in the basket. I don't want to draw in that hot fuel. I get cooled fuel from the tank.

Why, it's better for winter time 

@mountaindan Since you’ve already determined that parking downhill fixes the problem, if you park nose uphill with a full tank of gas and it starts ok, then you’ve narrowed your problem.

Edited November 5, 20186 yr by notlimah

2 hours ago, Dieselfuture said:

Why, it's better for winter time 

 

When you can drive -40*F weather without gelling and never use anti-gel products we'll talk about that. I'm already morning lows of +19*F now. 

I have run mine for over 7 years with both returns and the pick up in the basket with out issue. Always been curuious what the fuel temp is at VP when tank gets low. Just not curious enough to do anything about it.

Filled the tank nose up hill and it still has the starting problem.  Notlimah what are my possible options, this is all new to me.

Try parking it nose down and see if it stops. 

6 hours ago, mountaindan said:

Filled the tank nose up hill and it still has the starting problem.  Notlimah what are my possible options, this is all new to me.

 

Since you’ve replaced everything upfront already it’s more then likely one of your connections at the top of the fuel module leaking or just some tiny leak you haven’t seen up on the fuel lines. Clean them really good, then with the truck running use a fresh paper towel and grab all possible leak areas is a good way to check for hard to see leaks.

 

What FASS system do you have?

7 hours ago, dripley said:

I have run mine for over 7 years with both returns and the pick up in the basket with out issue. Always been curuious what the fuel temp is at VP when tank gets low. Just not curious enough to do anything about it.

Temps go up but not horrible, can't remember exact number. Must not effect that much if you got 250k on current vp. 

1 hour ago, Dieselfuture said:

Temps go up but not horrible, can't remember exact number. Must not effect that much if you got 250k on current vp. 

238k but whos counting.

I have a FASS DDRP,  won't be able to look at it for a few days hopefully this rain will stop

5 hours ago, mountaindan said:

I have a FASS DDRP,  won't be able to look at it for a few days hopefully this rain will stop

 

I cant remember if that has the return ball and spring for pressure regulation, but if so that’d be worth replacing as it could not be holding as firmly as it once did and leaking.

I will definitely check that out, thanks

Got the bed off today, have physical therapy tomorrow. Hope to get back on it this weekend weather permitting.

Does the fuel return line dump fuel to the top of the fuel module, or is there supposed to be a line to the bottom of the module?   (Vulcan draw straw)

 

 

Can you post a pic of your module if you have it removed? You might be experiencing exactly what I am.

I will get one tomorrow

Sounds good.

 

If I’m understanding your previous question I’d answer yes, but I know Eric would say otherwise based off the many talks we’ve had about this. I’ll leave it at that for now until we can take a look at yours and know for sure.

Edited November 8, 20186 yr by notlimah

11 hours ago, mountaindan said:

Does the fuel return line dump fuel to the top of the fuel module, or is there supposed to be a line to the bottom of the module?   (Vulcan draw straw)

 

 

It's supposed to go down as far as possible even on the factory basket, if it doesn't then the fuel will foam up and you'll be sucking in air

The hole beside the white suction tube is where the fuel returns