you may need to do a couple frequent oil changes to make sure all the diesel is out of the system. I'd have your injectors pop and flow tested.

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

Where did the injectors come from/who rebuilt them?
I would demand a refund at the very least. There is no way the open injector feed lines could run fuel out in any appreciable quantity unless the engine was cranked with the injectors absent.
Sounds like you are overfueling like a b!tch.
One other remote possibility (others will know more than I) is a lift pump problem that might allow fuel to enter the crankcase. I simply don't know about this.

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1983 M-B 240D-Gone too.
1976 M-B 300D-Departed.

"Good" is the worst enemy of "Great".

I don't see how injectors could put that much fuel into the engine. Need to find the source of the fuel. I'm going with the bad lift pump idea. It would explain both the poor running and the excess fuel in the crankcase.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

True -- the lift pump is lubricated by engine oil via the IP. If the lift pump has a bad internal seal, fuel could be pumped into the IP and then drain into the crankcase.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Is the SOV diaphragm connected to the crankcase?

__________________
CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?

good thing it didn't fire on the restart attempt ..possibility of a classic runaway engine scenario

So we're back to the lift pump, as in posts 8 and 11, ... time to change the oil and check the lift pump.

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Gone to the dark side

- Jeff

headed out to bring it home and do that now. Will report!

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1986 300 SDL, gray on black, #14 head, 180K miles
1982 300 CD, silver on palomino, 290K+ miles [sold]
1980 300 SD, white on palomino, 500K+ miles when retired [uncle's car - inspiration for the above]

So you guys suspect that the lift pump somehow either pumped a bunch of fuel in the crankcase and got sucked past the rings (Or valves, etc.) causing it to run crazy or the injectors were pumping too much fuel?

I know old school gas(Points/condenser era) but I'm still learning diesels.

Runaway just scares the crap out of me.

__________________
My occupational hazard bein'
my occupation's just not around...
1980 300SD
1980 300SD

Have you drained the oil, or just describing from the dipstick? If drained, how much oil/fuel mix came out? That may be relevant.

For BAD Diaphragm/Seal on the Lift Pump.

Only scenario that makes sense,if the Alternate/Additional Fluid in the Sump Is Diesel.

Jeremy's explanation nails it:
"True -- the lift pump is lubricated by engine oil via the IP. If the lift pump has a bad internal seal, fuel could be pumped into the IP and then drain into the crankcase. "

__________________
'84 300SD sold
124.128

Did you check the dipstick level after the incident?

__________________
My occupational hazard bein'
my occupation's just not around...
1980 300SD
1980 300SD

Why did you change out the injectors originally? How much higher than full is the fluid mark on the dipstick? How much oil did you add during the oil change? I understand you checked the oil level after the change is this right?Did you checxk the level off the old oil before the change? Plus if so was it normal.

What is going through my mind is that even if the O ring failed in the lift pump it should take some time to pump a lot more fuel into the crankcase. Thats why I asked why you changed the injectors.

The only other place I can think of that has a major interface between the oiling system and fuel is inside the injection pump. Although I never remember a case of a failure there it certainly has a better chance of adding a lot of fuel to the oil faster.

At least from your descriptions so far it does not sound like you destroyed the engine.

Don't be too scared, runaway diesels are not all that common. Usually, they are preceded by work on the IP, and conclusively an incorrect reinstall of some sort. If you don't tinker with your IP your chances of having a runaway are slim. If it really concerns you, keep a CO2 fire extinguisher in the car at all times, or a board of wood...if you get a runaway, spray the CO2 into the intake (board of wood to blockk intake) and the engine will choke from not having any oxygen. There is a lot of good reading in the DIY links section regarding runaway diesels, I would recommend going through those to gather pertinent information.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

I just drained somewhere in excess of 16 quarts of fluid out of the crankcase. I had a normal amount of oil in there before - the rest is fuel.

Prior to oil change, level was normal. Following change it was checked/normal too. I added the normal crankcase capacity (9 quarts I think it is) during the oil change. I drove it about 200 miles in total since the oil change. Injectors were rebuilt because the engine was noisy and I am/was thinking it was worn injector pinging. Not sure yet. 500 feet driven since injectors reinstalled.

Also just removed the lift pump off the IP. No obvious signs of leakage. I used lung pressure to see if there was any leakage past the shaft (on the side of pump that's in the IP) and there was no detectable leakage past the shaft passageway.

I thus far have been unable to get the lift pump apart to get a visual on the internal seal.

Any suggestions?

__________________
1986 300 SDL, gray on black, #14 head, 180K miles
1982 300 CD, silver on palomino, 290K+ miles [sold]
1980 300 SD, white on palomino, 500K+ miles when retired [uncle's car - inspiration for the above]