Can worn out injectors cause the engine to become more noisy than usual?
Engine starting to make a metallic sound or a nailing sound, sometimes worse than others.
currently at 180,000 with original injectors>

Yes,

EDIT:If you're using the "WONDERFUL" USLD diesel;there is a possibility
that your fuel "JOBBER" has not added enough additive to make up for
the lack of lubricity in the new 15ppm fuel.(Saves Him/Her a ton of
money.) As little as a quart of Peanut/Safflower/Vegetable/Etc. oil
will make a difference.Or you could use one of the commercial
additives:Redline/FPPF/Power Service/Etc.

EDIT:Your valves are in correct adjustment??? (every 10 to 15 K miles)

Try loosening the capnuts on top of each injector one at a time to try and
locate the source.(use rags around the testing injector it will seep diesel
when the capnut is loose)
What you are doing here is taking the injector being tested offline to see if
the noise goes away.
Then the classic next is to move the noisy injector(s) to another cylinder
to see if the noise follows.

Or you could try a diesel purge first.(lubro moly product ,Diesel Purge)
You would put both the intake fuel line (from the supply pump on the
side of the Injection Pump) and the return fuel line (from the return hose
on the fitting on top of the fuel filter) into a clean container full of
diesel purge and use this to run the engine (according to instructions).

With 180,000 miles on the injectors it might be a good idea to at least have them tested. My guess would be that the injector nozzles are worn out and for sure that the nozzle opening pressures are lower than they should be.
Do a search on the term "nailing" and get some info from other threads.

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84 300D, 82 Volvo 244Gl Diesel

When I replaced my nozzles a few months ago I found the old ones to be rusted/pitted/and the needle valve inside was so worn/loose that they fell right out when I removed the nozzle from the injector body! Not good....no wonder I had no power/smoke! With new bosio nozzles in, a world of difference. I always add some PowerService to my fillups....probably about 7-10oz per fillup....just to boost the cetane a little and help the lubricity.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Injectors should be cleaned and pop tested/replaced every 100k or so. Have them rebuilt with german made parts. The stuff made in India has a reputation around here.

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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

Sorry for the related threadjack...
I'll be replacing my injectors as well, but wanted to take them to the "local" Bosch shop for spray and pop tests. I was debating whether to buy some old injectors (anyone have a set of 5?) to rebuild then swap with mine after testing, or to buy some reman Bosch units (knowing I would be replacing them shortly).
-nB

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'83 300D Turbo
Current: ???K mi - 19.2mpg -> 17.4mpg -> 22.9mpg ---> ODO Died
bought at: 233.8K mi - 10MPG For $1.00
3.5 cylinders work: 320 320 100 340 280
Got insurance? FarmersReallySucks.Com

It has a reputation as scrap metal in Germany.

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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!

o.o 180k on origonal injectors.. are you kidding? i had a 616 engine that knocked so bad on one cylinder you swore that somone was hitting it with a ball peen hammer. i took the head off and found out that it wasnt burning the fuel at all, all because of a bad injector. i suggest you replace your injectors, couldnt be more than 200$ and it will run like new. ( Get better gas milage too)

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Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.

I just ordered the injectors from Dieselgiant (bosio) with the heat shields. Thanks for all the advice.

Awesome, you will be very satisfied with them. We've had them in both of our SD's for many many thousands of miles. (probably 15-17k between the two of them) with great results.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

The Bosch Rebuilds are some where in the $40 range (and you need to pay the core charge) if you search internet auto parts places. But, you will not know if you are getting the German Bosch nozzles or some other countries. You might want to look at this thread:
http://www.peachparts.com/shopforum/showthread.php?t=207859

I am waiting to buy some Monark injector nozzles form member C Sean Watts. He will be recieving a shipment of them soon. The price is good and you will know what you are getting. Contact him for the details if you are interested.
Ounce you get the nozzles you can have them rebuilt at you local fuel injection shop. You could also go to the junk yard and get that other set of 5 that you were talking about for use as cores to be rebuilt with your own nozzles.

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84 300D, 82 Volvo 244Gl Diesel

They're in - held in customs for two weeks.

I now have nozzles, springs, heat shields, pressure shims and a very small number of OM617 injectors ready to install. Also, a few nozzles and heat shields for VW 1.6L.

Insured USPS shipping starts at $8.00 (I don't charge "fleabay" inflated shipping)

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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!

Have the new nozzles pop tested for spray pattern before installing.
I have been getting reports on full sets of new BOSIO nozzles with seriously defective spray patterns.







Have a great day.

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ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
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Technical Quality Auditor.
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1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

I guess I will be waiting until they are out of coustoms.

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84 300D, 82 Volvo 244Gl Diesel

I'm in for some!

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