I have a 1987 735i that will turn over but wont start. It was in the shop for 1 month while they "traced the electrical problem" which they determined to be the crank sensor. This car has a new crank sensor, new starter, new battery, new spark plug wires, new spark plugs, new distributor cap, new rotor button, new fuel pump, new air filter....I am at my wits end. I want to get this last problem resolved so I can sell it. I have added a beautiful paint job, new bmw wheels, and new tires. After I got the crank sensor, it did start for a short time, but now it is back to turning over but not starting! Please help!