Sorry about that - Do you understand the concept I was describing? Nothing to do with car starting. I should have made that clearer. Just all the ususl stuff the engine side of the throttle flap. Carbi cleaner is good for tracing leaks - makes engine idle change when you hit the spot. Also try with brake booster hose pluged - in case you have a leak in that unit.
Good - Fast - Cheap: Pick any two.
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i