Just replaced the injectors on 180k mile 95 e300 diesel non turbo. It was quiet before but with some cold running issues. The cold running issues are still there, once warm the engine pulls better than it did with the old injectors but it is noisier at idle with what I think is called nailing - loud clanging that I can also feel pulsing through the metal fuel pipe from the IP to the injector.
What is causing this and is it possible to get rid of it?

Hmmm. Good question. I also have a '95 E300D and have been experiencing what I believe to be injector nailing from time to time on cold start ups. My plan is to eventually replace the injectors as the engine has 180k miles on it and I have no record that they have ever been changed. I'm not sure what would be causing this in your car if you just replaced the injectors. Did you replace just the nozzles or the whole injector? What brand did you use? Where were they manufactured, etc.?

Sorry I can't help out more. Maybe give a little more info and see if others have any additional feedback.

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'95 E300D ("Tank") - 231,000 miles
'79 240D ("Biscuit") - 197,250 miles (Sold)
'83 240D ("Ding-Ding") - 217,000 miles (Death by deer)
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"Back off, man. I’m a scientist” ~ Peter Venkman

If you replaced nozzles only (most common) were the pop pressures adjusted to bring them to factory specs?

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Hi
They were complete replacements using Bosch - they are available here at about $70 exchange from a Bosch dealer; they are about 3 times that from MB. You have got me thinking about the pop pressures. I assume that these injectors are used in multiple different cars with different pressures? Is that the difference with MB supplied parts maybe?
How easy is it to adjust them?

By the way mine is doing it cold and hot.

If the injectors you fitted were from Bosch, and the part numbers were for your car, the pop pressures will be fine. Actually, the injectors are insensitive to small changes in pop pressure anyway - it's really not something to get excited about.

Large changes in pop pressure usually indicate a problem with the injector that needs to be fixed before you reset the pop pressure, but I'm sure you aren't in this regime when you've fitted replacement Bosch injectors.

Which injectors are making the noise?

Next to the primary fuel filter.

He is talking about an "in tank screen" - I assume this is in the fuel tank?
I already replaced the main and secondary filters in the engine bay.

its under the car at the bottom of the fuel tank. The fuel line is connected to it. Try to change it when you have little fuel in the tank as you dont want to have alot of fuel comming out. Its a very large size so you might need to get a bigger socket than you have. Just follow the line and where it goes into the tank that is where it is.

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http://i148.photobucket.com/albums/s...titled-1-3.jpg
1981 300d

The in-tank screen is in the bottom of the fuel tank. The fuel feed line is threaded into the screen and can be located by following the fuel line that is located just above the diff (under the car). Drive the car as far as you can without running it empty and then pull the rubber lines from the hard lines (return and feed) on the chassis to drain the rest. It is a mess, but a 5 gallon bucket catches most of it. Fuel will drain onto the diff and then go everywhere if you're not careful! A 19mm fitting screws in to the screen and I found that when I began to loosen the 19mm fuel line fitting, the whole screen came out with it, which works out great! I just cleaned mine with carb cleaner and a toothbrush and it was good to go. I also used my finger to clean out slime that was gathered around the screen opening. Here is a pic of the screen to give you an idea of what to expect.

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1995 E300D - 193K and $28K in maintenance!
1964 220Sb - 318K, second owner
1997 Passat TDI - 190K and 47mpg

Have you confirmed that there are no leaks at the delivery valves? Especially #1? That can cause a loud idle.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Jeremy, interesting. Guys I have the SAME affliction. Oddly, I just started the car after a month of sitting and it ran well longer ( about one minute) before deteriorating into a smoky clanky mess. It'll stay that way until its fully warm at 83.

I planned on the tank screen, but never reckoned it had any impact on the "just after cold start" running issue.

BTW, new nozzles, all tested. No change. ( better wot power)

Everyone says GLOWS. but again, the car just started after sitting in sub 0 (c) temps fr a month. It starts GREAT! and runs like new for about ten sencodns adn then.... whomp whompa, like it begins to miss soon after...

Tank is at 1/4 adn I plan on running it out this weekend.

Doe anyone know what the ARA actuator is on these IPs? I'm thiking it's a bad prechamber or a IP that needs service. Or this electrical hookup???

Im was going to give it a compression test first to rule out bad cyl pressures ( althohgh like I said, starts fine and runs new for half a minute).

I did my 606 injectors about 18 months ago--Noisy as heck right afterword, but after they seated, it was back to quiet again--about a 1000 miles. StarTron http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/141700/377%20710/0/startron/Primary%20Search/mode%20matchallpartial/0/0?N=377%20710&Ne=0&Ntt=startron&Ntk=Primary%20Search&Ntx=mode%20matchallpartial&Nao=0&Ns=0&keyword=startron&isLTokenURL=true&storeNum=6&subdeptNum=169&classNum=764will do wonders for quiet operation, my E300D is virtually gas like in its smoothness and quiet operation. I get the idle degradation after the afterglow ceases and before the head really warms up in cold weather.--Dumb question, but did you torque the new injectors in and replace the heat shields? if one doesn't do this exactly, it will affect the pop off pressure and in turn vary the between cylinder timing.

Also, I boiled my intake and cleaned all the ports. I pulled the intake to do a glow plug and found 7 of the 12 tubes more than 2/3 blocked with oil soot from the EGR. I cleaned all 12 ports and boiled the intake and cleaned both of the resignation dampeners mounted in the intake

WOW, I now understand why they thought the 606 without a turbo was amply peppy. It is, when everything is clean and functional!

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Mark
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THE WHITE FLEET
2016 GLE300d 4-MATIC 38K BROWN!
2012 S350 Bluetec==94k WHITE

2007 ML320 CDI==166K WHITE (FOR SALE)

Under new management:
2005 E320 CDI--140K--WHITE
1995 E300-Diesel-133.5K--THE CAR IS BLUE
1986 300SL--97.5K (European) AND WHITE. Back in Europe!
1991 190E 2.3-73K California Perfect.--WHITE
1995 E320-Wagon-159K--WHITE (recently scrapped)
1987 300D Turbo-213K--WHITE
1987 190D 2.5 Turbo-288K--WHITE