1973 450SL D-Jet Frustration

Signs of creative US tuning of type 3 MAP sensors are

1. Black cap is missing - sold often as core
2. Black cap still there but lid is missing
3. Black cap askew or broken
4. Marks of opening lid on cap

I have one MAP sensor lying here where a fan ol alternative tuning has not only removed the cap but also detuned it so far that it is not only leaking but I have to open it to sort internals out. Being a hunter and collector I tend to buy such failures to make them live again.

MAP sensor looks good with no signs of violation. I have a photo, but not sure how to insert it here.

I am now trying to find TDC. With all spark plugs removed internal resistance is still to large to overcome turning the power steering pulley. Getting onto the crank pulley bolt is also impossible. Awaiting the help of an assistant...!

Jeff