The car in question is a 84 300D.

Where is Calif are you located, 55deg? must be SoCal. was 33 on our front porch @ 6am.

Along with GP`s when did you last have the Valve adjusted? this can cause a hard start in cold weather as well as the Plugs.

Mercedes Diesel Valve Adjustment Procedure

It will be pricy to have a shop replace the plugs and a valve adj. for what they will charge in labor and parts mark up you can get some good tools and DIY.

The DG link PSABOIC added and the one I added should get you up to speed.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works