Hi LEEBRYANT and welcome to the forum.

Can you tell us the age of your sprinter or which engine is in it?

You would set an OM603 engine for example to an artificial mark after TDC... but an OM617 to a "true" mark before TDC...

(I'll PM a moderator to ask them to move this to the diesel forum where you'll get more help)

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!