I got the rear three injector lines wet but the three front are none dry, this after cranking for 20 to 25 seconds at least 8 times.... I hope not yo hsve to replace the starter.... The older diesels had the built in hand pump, gotta wonder why the e300d does not

You must have an air leak somewhere or broken valves in your lift pump. The 606 fuel system isn't that different from the 603, and even from a bone-dry system, it usually takes me no more than 3 30-second crank cycles to get mine to splutter to life. The lift pump moves a fairly LARGE amount of fuel for every stroke, it should be able to quickly prime the fuel system, especially if you did the hard work of pre-priming it.

Are you sure you don't have a problem with the shutoff solenoid?

The 60x series engines are self-priming, that's why they don't have the primer knob.

__________________
Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

What would be the best way to diagnose the problem?

__________________
Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.

Hey guys. I'm having the same problem. I got the car on level ground it started two days in a row. Third day no start . I'm getting fuel to the filter . how do I check the shut off valve? I cut into the wires in the sov does it suppose to click when opening or closing ? How can I bypass the sov? The plug on the ob2 not working. What can I do to get it to start? Thanks for the help. Greg

Do you smell wet diesel fuel under the hood ( bonnet)? If so, can you source it? That may be your problem.

Maybe too early. Fuel shutoff valve changed properly? Wise to set up to suffocate engine when changing them as well. Some people have had runaways.


Why did you change the fuel shut off to start with? I would take the vaccum line off it just to make certain it is not getting vacuum while you are cranking.

Thanks for the reply. I didn't mention my car is 1996 e300d. . it's electronic sov . Can I put a tee fitting in place the sov to get it started ? I'm not ready to sell it to pick a part for 350.00
yet
thankss

When ever I replaced a clear fuel lines on my E300TD I would park it on the driveway nose down with a full tank and do them one at a time and start the car after each line. When doing the fuel filter I also park nose down and prefill the filter with diesel.

You might try jacking the rear up.

__________________
1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250

Hey guys on my 96 e300d can I jump the electronic sov? There are 5 wires that I've spliced into (yellow, blue, brown, white and brown,black and brown ). Will it click or make some kind of sound? Thanks for the help

I use air tech diesel fuel pump like Greg mentioned. U can ask for fuel pump for 2000 Chevy 6.5 diesel They are common and small and easy to put anywhere under the hood. Put a 617 pre filter or some pre filter before the pump.

Greg what is wrong with the sov ? Do u ha e any engine codes ? My 1997 and another friends had a no start and if the code references diesel injection system it is probably the big relay under the hood. K44 relay it might be called. U could probably jump the wires there in the relay too just to make sure it’s always getting on with the key on.
That controls power to the sov. Replaced that and been good ever since.

It would be cool to bypass it though if it works. Those are leaky annoyances and I don’t think it actually shuts off the car. It’s just for security I think and rfid key functionality. I want to try it now.

One more thing that can cause these to not prime or loose prime sitting. The bolt on top of fuel filter. In 1995 they had Some weird two part bolt with the fuel shutoff on top for emergency stopping. My friends car was always losing prime and she had to park on hill all the time or it would loose prime. I couldn’t figure it out for anything. Replaced all the lines and o rings. I dropped the fuel filter bolt and lost it one night and replaced it with a regular fuel filter bolt from a 1997 606. Car never lost prime again. She was ok not spending 136.00 on a new bolt with the shutoff.

Anyway not likely if you you have the simple bolt With no shutoff but if all else fails maybe try to replace it anyway.