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Cranks but no start

4K views 10 replies 4 participants last post by  marti5 
#1 ·
HELP, I have a 91 750IL that turns over but won't start. By searching and reading online I found this board. Now a little background, My old girl doesn't like to sit after about 2 weeks I thought I would take her for a spin with no luck. I have check the fuel pumps, Timing chain & All the fuses. Is there a way to test the relays or are they just an R & R item? Thanks in advance
 
#8 ·
Maf sensor???. take it off if it runs the same thats the problem, if so only replace with genuine BMW. Do NOT buy a cheap one they measure the air intake incorrect and just dont work.
 
#11 ·
Ok, You would be wise to replace the camshaft sensor if its brought it up, what I would do is run it for a 100 miles or so and see how she goes, then do a diagnostic again, if it comes up again change it or you will only have problems later on.
 
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