|
|
|
#1
|
|||
|
|||
leaky injector
one of my injectors has started leaking in the middle, where the two parts of the injector screw together. i had new nozzles installed a few thousand miles ago by c sean watts.
is this an easy fix? should i just unscrew, clean the threads and retighten?
__________________
1980 300D, 128K |
#2
|
||||
|
||||
1st be 100% sure it is leaking between the Injector Nut and the Injector Body.
After that 2 choices. Both will require a new Heat Shield or 2 new Heat Shields as you will need to remove the Injector at least once and maybe twice. Remove the Injector and put it in a vice and Torque the Injector Nut to 59 Foot Pounds (80 Nm) and install it again and see if it leaks. That is the Max allowable torque. Also inspet the Injector Nut for Hair Line Cracks as sometimes the crack. If so you can get a used Injector Nut and Install it. Exchanging the Injector Nut will not change the Pop Pressure. If it still leaks this would normally call for taking apart the Injector and lapping the Precision surfaces again. After which the Injector is assembled with the proper Torque and put back on the Engine. I lost track of what has happen with C Sean Watts? Do you have any Info?
__________________
84 300D, 82 Volvo 244Gl Diesel Last edited by Diesel911; 09-25-2009 at 01:22 AM. |
#3
|
||||
|
||||
I thought that the appearance of fuel in that area of the injector holder pointed to a leak on my #2 and #3. It turned out that it was a cracked return line ("bleed fuel") barb. The cracks were invisible, and very close to where the barb protruded out of the body, but were leaking fuel under the rubber return line end and collecting in the seam between the body and the clamping nut. I had to replace those bodies with good used ones.
__________________
327K on 1986 W201, 602.911, 722.414 2.5 190D ("The Red Baron") 139K on 1993 W124, 104.942, 722.433 2.8 300E ("Queen") http://farm5.static.flickr.com/4081/...0bb92d3c_m.jpg http://i370.photobucket.com/albums/o...g?t=1325284354 Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. - Albert Einstein take a walk down memory lane... Last edited by sasquatchgeoff; 09-25-2009 at 01:31 AM. |
#4
|
||||
|
||||
Quote:
Yes, the Barbs are shoved into the holes in the upper Injector Body and are crimped/swedged/peened over to hold them in place. Cracked or not ounce in a while the come loose inside and leak. The only fix is to replace the Upper Injector Body. And, If you replace the Upper Injector Body it will change your Pop/Opening Pressure unless the internal dimensions are exactly the same.
__________________
84 300D, 82 Volvo 244Gl Diesel |
#5
|
||||
|
||||
Quote:
__________________
327K on 1986 W201, 602.911, 722.414 2.5 190D ("The Red Baron") 139K on 1993 W124, 104.942, 722.433 2.8 300E ("Queen") http://farm5.static.flickr.com/4081/...0bb92d3c_m.jpg http://i370.photobucket.com/albums/o...g?t=1325284354 Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. - Albert Einstein take a walk down memory lane... Last edited by sasquatchgeoff; 09-25-2009 at 01:51 PM. |
#6
|
||||
|
||||
Quote:
I have looked at a lot sockets to include US made one that say they are deep sockets but they often have too much metal let at the top of the socket; not deep through the entire inside length of the socket. I have been using the same 1-1/16" Craftsman socket on Injectors since 1975. What ever it cost me way back then it has surely paid for itself many times over. You can see in the blurry pic that it is deep all the way to the end; nothint to hit the Fuel Return Nipples.
__________________
84 300D, 82 Volvo 244Gl Diesel Last edited by Diesel911; 09-25-2009 at 08:14 PM. |
#7
|
||||
|
||||
I tweaked one of the barbs on an injector because of a poor fitting socket. Before I damaged any others I bought the right size and depth socket.
__________________
1981 240D 143k 4 spd manual -SOLD 2004 VW Jetta TDI 5 speed 300k -still driven daily |
#8
|
|||
|
|||
I have been using the Craftsman deep 1 1/6 socket also w/o any problems.
plenty of depth to clear the barbs. part# 47532. Charlie
__________________
there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works |
#9
|
|||
|
|||
ugh. i hope it's not a barb but i think it might be. i thought it was coming from there and i replaced the hoses but it didn't help. i'll have to inspect further.
__________________
1980 300D, 128K |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|