Go through all of the tedious tests described in chapter 07.3-0121

Below is a link for a W124 300E - but there's a similar if not the same chapter in the W126 FSM that is also available on www.startekinfo.com

http://www.startekinfo.com/StarTek/outside/12264/Program/Engine/103/07.3-0121.pdf

For hints and tips to get that FSM to work see link in my sig...

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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!