After following the same steps from the 78 Inow have both cars running .The 84 cough a lot of black smoke.Changed the oil and found carbon chunks flowing out with the oil ,that mmo must of softened alot of the carbon buildup so that steps is definately worth the time.I got it started 2 days ago ,now is starting pretty easy .

So with this one you added MMO to the cylinders and let it soak for a few days, and then added Restore?

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NC Benz
Fuquay-Varina, NC
1979 300D
1983 300D Turbo 260,000 Miles
1984 300D Turbo 345,000 Miles (sons car)
OBK #31
1998 Ford Expedition 5.4l (fer Haulin'!) 145,000
1973 19' SeaRay with 115 Mercury TOWER OF POWER!
Club Car Golf Cart 36V
Ex toys:
1967 Mustang 289 (First Car)
Fiat 124TC
1975 Honda CVCC
1980 Audi 5000 Turbo

Pulled injectors out ,with the heat sheilds.Added 2oz of Marvel to each hole ,soaked for 5 days .Turned the motor over to purge MMo out of the cylinder ,checked compression then repeated this step .I got a good increase from the 1st to 2nd soak and a big gain above the initial compression check which was below specs for the motor on each car.The motor on both cars would still not start.I happened upon a youtube vid that showed a guy using Rislone compression repair on a 300sd with success.I mixed the product with a 20/50 weight oil ,then added it as an oil change with new filter.I felt it important to mix it with the oil instead of just pouring it in due to the motor will not mix it throughly till start up.I then add a small amount to each hole.Turned the motor over a few times to spray out any access.Then put in the heatsheilds that go beneath the injectors ,then the injectors ,lines ,etc.Filled a can with a mixture of fuel and a injection cleaner consentrate ,much like diesel giant.com shows on its diesel purge setup ,and fill the lines with the thumb pump.On the 78 300cd it pulled off a start after 3 tries ,I had to keep the throttle about a 1/4 open and it climbed to a nice idle after 2 minutes ,good response when opening it up ,no horrible sounds .The 84 had a few more turns to get it to light ,had a leak at the return lines and had to keep the starter going until it wa fully underway.It has bad motor mounts and feels like it wants to jump out of the car.When reved it sounds as good as any others mb diesel Ive heard.The turbo spools nicely and once I get the rest of my throttle linkage together Im taking it for a spin around the lot.

I can't find this video:/

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Look up 300sd wont start ,then to see the steps he did for a successful start look up 300sd start. I was reading some of the comments below the video and they all replied it was due to compression .The only thing he doesnt explain on the video is what his compression was from the beginning and I have done that step here.The one thing he has not done is take his injectors out and drop a small amount on top of the cylinder ,then purge it out ,this brought up the compression considerable on all holes.If you go with just adding it to the oil I would suggest changing the filter and make sure you mix it with the oil before dumping it in the crankcase.With my slower steps of soaking the rings with mmo ,then changing the oil with the Rislone product and a new filter I was able to get a start out of 2 ,otherwize ,parts cars .I really was surprised that it worked ,Im a believer now.I think Ill be adding this Rislone additive as a mixture to the oil to these 2 cars from now on.

Ive noticed big changes in both cars.The 84 sings that sweet diesel turbo song ,changed the oil once more with Rislone added to make sure Ive exited all of the olde oil.Im sure theirs more carbon buildup in that motor ,when I did a valve adj. though the top end didnt look to shabbie.The blow by is niel ,none exists, is this rare?On the other hand the 77 has plenty to spare,it sounds in need of a timing chain too.Runs and winds up nicely though ,just more noisey .Both cars have come along way from parking lot sitters.In recent weeks they have both recieved new belts,trannie service ,brakes bleed and lines checked,tires in need of replacement /replaced,and a few junkyard searchs for missing parts.The one last item on the 77 is the throttle cable.The 84 is ready for the road ,Ill need insurance and tags for the maiden voyage .Still has a few dents in her but a real nice clean rust free body.I hope this helps someone else in putting their MB diesel on the road ,its been a zero to hero change on both my cars.