also, i am having problems with the idle, the car will rev, but wont idle. is that related?

i need more input people. im stuck

__________________
1985 300D - "Desi"
1981 300D - "Pepi"
1984 240D - "Sticky"
1985 300TD - "Flitstone"
1984 300TD - "Frenchie"
1987 300TD - "4481"