I've had smush running and driving since may, and have put 8k miles on her already. She's a dream, but she's developed something odd. Previously she never ever smoked at idle, even if the alda was cranked. But now she smokes pretty gross at ilde even with the alda all the way in past stock. I'm thinking it's blow by running past the cylinder wall's or something.

What are your thoughts on this?

Oh and it's not black soot, it's grey haze color from the exhaust.

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1981 300TD 4 speed manual
Euro bumpers, zender valance and skirts, H&R springs, billy HD's, leveled sls, real AMG Pentas 16x8 et11, vdo boost/egt gauges intergrated into ash tray, eurolights, led 3rd brake light

I was also thinking about checking the IP timing.

I've experienced whitish/grey smoke from bad injectors. I had one bad one in a 300D I had and it was embarrassing to drive. I had a smoke screen behind me. If it's just started happening I'd think about injectors not injector timing. The one that was bad in my 300 had lost the tip of the pintle nozzle.

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Good point, maybe It's time for monarks...

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1981 300TD 4 speed manual
Euro bumpers, zender valance and skirts, H&R springs, billy HD's, leveled sls, real AMG Pentas 16x8 et11, vdo boost/egt gauges intergrated into ash tray, eurolights, led 3rd brake light

Maybe run a can of diesel purge through it just cause...then look into getting nozzles and pressure testing.

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1987 300TDT - 195,000 (Original #14 head)
1993 190E 2.3 - 105,000
1981 300D - 250,000

I've done that already. No dice.

I had a bosch certified shop (Diesel equipment co in Greensboro) do the six injectors out of my 300SDL -- test them, replace any needed nozzles, pressure-set them to spec --- and when I put them back in, from that day on, the car smoked more at all times (idle, road speed, in between) than it had before. Never noticed any real benefit (the injectors, to the best of my knowledge, had been over 200K with no service) and the added smoke is a non-issue for me, but I'm hesitant to jump on the "oh, injectors have to be set just right and your car will thank you" bandwagon based on my experience. Six shop-rebuilt injectors did no better in my engine and produce more smoke than the "before" injectors did.

The injector change happened simultaneously to replacing the head, however, so it's a bit difficult to say what has caused what at this point since so many major things were changed at once.

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~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL

Is this something a Valve Adjustment might help?

Are you using any Oil?

Does the smoke have any abnormal Oder to it?

When I had hazy gray smoke all of the time on my Volvo Diesel it must have been because I had some stuck Piston Rings.
I soaked the Cylinders/Pistons with Marvel Mystrey Oil for one week; rotated the Engie and soaked for 3 more days.
After finishing up with the soak I took it on the Freeway.
It took about 3 more days of driving and the gray Smoke went away.

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84 300D, 82 Volvo 244Gl Diesel

I noticed a huge difference when I put new Bosch injectors in my 240. The idle was smooth as a babies butt with the new injectors.

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Valve adjustment was done prior to it being parked for 2 years by the po before I bought it... Maybe it's time.

No odor to it at all.

Car drips oil a bit (like the size of a dime, but no burning)

I thought about MMO. I have some lying around somewhere. Should I just take the injectors out and pour it in there?

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1981 300TD 4 speed manual
Euro bumpers, zender valance and skirts, H&R springs, billy HD's, leveled sls, real AMG Pentas 16x8 et11, vdo boost/egt gauges intergrated into ash tray, eurolights, led 3rd brake light

I think injectors is a good idea. I put new monark 265's in my old car. They were very loud at first, but after a thousand miles the car purred.

i had good luck just putting mmo in with fuel