84 300sd Rough/Shaky Idle

I have an 84 300sd which I can't do anything to settle down the shaky engine during the rough idle. I ran 3 cans of diesel purge and that seemed to help while running Diesel Purge, but when back on WVO or diesel, the engine starts shaking. Is time to clean the injectors? What am I missing?

Air, fuel filters are new. Valve adjustment done. What next?

Thanks!

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Diesel Engine Specific Aid

Chassis Model Number

W126

A new rack damper bolt sure

A new rack damper bolt sure made mine like a caddy.

Rough Shaky Idle

I Have a 1983 cd and had a simular problem. First check to see if your moter mounts are in good condition, if not Replace them if so I have had good luck runing a botle of Marvles Mystry oil every other tank. Hope this helped

I have an 81 300sd which I

I have an 81 300sd which I have tried everything with as well. (except the damper bolt) Mine.......seems like it is missing, even with new injectors, diesel purge, valves adjusted etc etc

It only seems to be doing the missing when cold ??? Could still be the damper bolt?

DIESEL PURGE

1984 300D TURBO 147K
REPLACE THE LIFT FUEL PUMP ASSEMBLY $150.00, NOW HAVE GOOD POWER, INJECTORS DO NOT PLUG UP, GOOD MILEAGE, NO SMOKE, IDLE GOOD, 2 HOURS DIY, DONE

Raymond...........how did

Raymond...........how did you decide it was your lift pump?

FUEL LIFT PUMP

1984 300D TURBO 147K
THIS SITE WAS SELLING A ELECTRIC LIFT PUMP KIT $159.00 AND WITH A GOOD WRITE UP WITH ADDED POWER THE OTHER PUMP MUST HAVE BEEN WEAK LOW FUEL PRESSURE.
AIRPLANES DO HAVE A ELECTIC FUEL PUMP FOR BACK UP OF THE MECH FUEL PUMP USE FOR CHANGE FUEL TANKS AND TAKE OFF THE RUNWAY, I LOST FUEL PRESSURE IN TEXAS AND CAR STOP, A BACK UP PUMP WOULD HAVE HELP.