Engine/Transmission (1994 - 1998) Leaking delivery valve ???

[jeepullr]

Noticed more and more smoke over the last couple of days. Popped the hood this am and did some looking around. There is quite a bit of fuel leaking from the base of the #6 delivery valve. Pulled the DV, everything looks good. Recent stainless steel washer (thanks McMopar), looks good. Rubber gasket is a bit chewed up. All surfaces in the IP and on the DV look clean and smooth... Put the DV back in, torque to spec (29# then 85#), hook up fuel lines, start and it's leaking more...



What can I, or should I do? Can't imagine that torqueing the DV down more is gonna gain me anything... Can't be loosing this much fuel... Don't like the amount of smoke... How do I make this thing quit leaking?

 

[TGroves]

do you have one of those green o-rings ,install a new one

 

[jeepullr]

As I was monkeying with it the green o-ring broke (it was chewed up pretty good). Went to the sLowes plumbing department and found a same size black one... Slowed down the leak considerably... but I'm still dribbling fuel.

 

[JacobsD]

Remember that oil makes rubber expand, you'll probally need the special anti-swelling one.

 

[Highfinance97]

In what manner did you retorque the DV holder??





Michael

 

[jeepullr]

Tighten to 29# then to 85#

 

[jeepullr]

Any other ideas? It's leaking worse today. No chance of getting over to Cummins today (over an hour drive away) for the o-ring. But, I need to get this taken care of. What is causing it to leak?

 

[Highfinance97]

Those green O-rings are special for the DV holder and made to withstand Diesel, And are to be used once.



when your ready to torque,

1. Torque to 50 FTlbs

2. Then loosen

3. Then torque to 85FTlbs







Michael

 

[jeepullr]

I'm all about getting the green rings, just ain't gonna happen this week. The plumbing ring has been in for about 24 hours... I have a hard time believing that the O-ring is what keeps these things from leaking. The IP is pushing fuel to about 14K#'s there... No way an O-ring is gonna keep that. It would appear that the seating of the DV holder onto the washer at the bottom of the hole would be where I'm leaking (only place I can figure). So, why all of a sudden is this leaking. The SS washer is less than 5k miles old, was torqued to spec (as per the TSM) when new, looks good now, but I'm now leaking?????



Where did your 50# torque come from? TSM states to torque to 39 then to 85, nothing about loosening in between.

 

[Highfinance97]

Where did your 50# torque come from? TSM states to torque to 39 then to 85, nothing about loosening in between.

A fuel Injection shop in my area, its what ive always done





Michael

 

[TGroves]

i know, sounds kinda wierd but the oring is the key