Mechanics

WONT START

1985 BMW 735

Engine Mechanical problem
1985 BMW 735 6 cyl Two Wheel Drive Automatic 320000 miles

i bought the car about 2 months ago about a week after driving the car I was on my way home and the rpms dropped while I was driving about 50 mph and the car missfired and stalled I have replaced the plugs, wires, cap, and rotor and the car starts sometimes but 99% of the time it starts and dies after about 5 seconds the one day I got it to run for about 30 mins in the driveway (i was stuck in the snow) once the car reached operating temp it stalled and died so I pulled the plugs and they were black like the car was runnin really rich I dont know what else to do can someone please help
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85bimmer735
February 16, 2010.



You need to check the fuel pressure low pressure will cause a vehicle to run rich, also disconnect the vacuum line from your pressure regulator that will allow the system to run at full pressure see if that helps.

Dr Loot
Feb 16, 2010.