Hi,
(Ignore this part I just realized its purpose after reading around a bit... return hose end plug)
I had a blockage in my injector, its a very strange thing. I am in the process of doing a compression test and I figured I would change the nozzles while I had the injectors off. I cut the hoses off the injectors...and on the last one (closest to car compartment) I see a metal thing sticking out so I cut further down and sure enough there was a piece of metal in the hose. Is this for blocking fuel? Or is this not suppose to be there?

Also, I noticed that my injectors get progressively less "wet" from the front of the engine toward the back. The back of the engine injector is the one with the blockage and it appears slightly rusted( As in the nozzle is rusted). Just wondering if this was normal or it was a sign of IP timing issues or something else.

Also, how important is it for me to get these adjusted if I change the nozzles? I am using monark nozzles from mercedes source.

Thanks

Pics
Left (last injector - or the one closest to driving compartment)


Foreign Object aka return hose end plug

Most of the time it's from leaking fuel return hose, could also be the hard line connection at the top.

You should not install the new nozzles without thoroughly cleaning them and pop testing and balancing the set. I correct an awful lot of them from folks who try to do a nozzle replacement in the driveway or on the fender. You could very well end up with it running much worse than with the old nozzles.


See post #22

__________________
1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

Yes. Have them done.
No offense, but if you don't know what the return line plug is you shouldn't be tinkering with your injectors.

__________________
Chris Brown
"OC", So-Cal
1979 240D, 122K, 4spd, Colorado Biege w/Tobacco, Pwr Roof, AC, Cruise, Becker Corona - SOLD
Past Benzos: 71 250 • 83 240D • 84 190E • 04 C240 • 11 GLK350 • 13 c250 Coupe
http://www.peachparts.com/shopforum/...ine=1276896801

Yea, I am learning as I go but thanks

Probably a good call to cut the hoses. Search for "nicking the barb" on the injector. The ends of the hoses get very hard and you want to remove them carefully in order to prevent future leaks.

Contact Sean Watts in the post above and he can do the work for you. He Helps a lot of forum members with their injectors.... and just did mine. Excellent!

__________________

1987 300TD 147,000 miles- Palomino leather interior, 1995 facelift and body cladding, E350 wheels, Rebuilt suspension and sport springs, rebuilt turbo, New Monarch injection pump and injectors....and the list goes on and on...

Save that plug!!! It's cheaper (and reusuable) then the cap the dealer sells you now!!

__________________
92 300D 2.5L OM602 OBK #59

Thanks for the tip.


I am sending them to Sean tomorrow

Now while the injectors are away, do the valve adjustment.

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

Thank you

__________________
1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

How did you determine there was a blockage?

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

Read the first sentence in post #1. (The one immediately following "Hi" and ending with "return hose end plug.")

Then look at the pictures of the "blockage."

Ah I misread that to say the that injector was blocked, not the return line.

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42