Expert: Don Berlan - 2/22/2010

Question
I have a 91' M50....525i....it sat in the driveway for 4 months without starting the engine.......I have replaced the battery....sparkplugs...changed the engine oil.....the engine cranks but will not turn over.....I don't feel that gas is getting to the injectors........The tank is half full....I added HEET to the tank to remove any moisture....I was thinking about draining the tank and adding new gas.......Help Please!!!
No previous problems with starting the engine...always has worked like a charm....

Thanks....Jeff

Answer
You need to first check to see if you do have fuel pressure.If that is correct than you need to check to make sure you have spark.Since the vehicle sat you should check the relay connections and the grounds for corrosion.So check fuel pressure,then spark