New #6 Injector and Line - Now It Leaks

[BMiller7]

I took my truck into the Dodge Dealer and they said that the #6 injector needed to be replaced. After replacing it, I started to get drops of raw diesel appearing along the leftside frame rail, transmission brace, the bottom of the fuel tank, the back of the tailgate. What was even worse is that my wife was traveling behind me and her windshield is covered with drops of raw diesel.

After checking on the forum, I replaced the #4 injector line that had a history of leaking. Still no change. I took it back to the dealer where they increased the pressure in the injector lines while they had it up on the lift. Sure enough, drops of diesel were trickleing from the area around the back of the #6 injector. They diagnosed the problem as a bad #6 injector line. After installing a new line, I'm still getting the same leak.



Any ideas? Could the #6 injector be leaking? Could it be the return line? The diesel leak increases with pressure. Isn't the return line gravity flow?



I have another appointment to have it checked this coming Monday. I've already spent $2,500 inside the engine compartment on repairs this month, and I'd like to stop the money hemorrage as soon as possible.



Bruce

 

[TCDiesel]

Its the rail about 1 in every 1000 leak around the fitting... It can be Possibly repaired, but I think we are the only company performing this... It also may be the connection at the tube (CO) and line. .

 

[BMiller7]

If it is the rail tube or connection, could it have been damaged when the dealer replaced the injector?

It's just very suspect that it started right after I replaced the injector.

 

[JJPage]

I would purchase a new #6 injector line, and replace, if that's what is leaking.

 

[BMiller7]

Just replaced the#4 last week, and # 6 line this week. It still leaks the same. Looked at the old #4 and #6 lines, and can't see any problems with them, but with 93,000 miles I sure won't put them back on either. Went back today and retorqued all. Still leaks.

 

[Joseph Donnelly]

The front and rear of the fuel rail have fittings screwed into it, not merely bosses to tighten the lines onto. If the dealer tech didn't hold the end fitting tight, and it turned when loosening the line, you will get a leak that usually required a new rail to fix. It is their fault if this is what happened.