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Starts fine runs for 12 seconds then stalls out?

Posted: Sat Jul 06, 2019 1:09 pm
by canada karl
I drained the bad fuel and put a few gallons of premium gas in. Changed out the plugs, points, condensor ,cap and rotor. Any idea of the problem and how to track it down? I had to reuse an older condensor and am going to order a new one but does this sound like a condensor problem?

Re: Starts fine runs for 12 seconds then stalls out?

Posted: Sun Jul 07, 2019 12:39 am
by maybeillbuyit
Drained out the bad fuel? How bad? Could the tank be full of crap? Filter? Maybe the injectors have been plugged with crap? Or the strainer in the tank. I don't know if it sounds like a condenser problem but a new one is cheap. Hows the fuel pressure?

Re: Starts fine runs for 12 seconds then stalls out?

Posted: Sun Jul 07, 2019 7:22 am
by canada karl
Here's an update.I believe it's a fuel flow problem. I pushed in the flap at the AFM and did not here a click or here the hum of the fuel pump. I checked the fuel pump as to the manual instructions and the pump is OK so the issue is somewhere along the wiring or a relay. What would be the next step to locate the problem?

Re: Starts fine runs for 12 seconds then stalls out?

Posted: Mon Jul 08, 2019 4:20 am
by 528i-1981
Karl - Lock has been combatting a cut-out problem, so check that recent thread on this board. Did you verify the AFM itself is working correctly? Lock posted some nice pictures on his thread and there is a Technical FAQ as well.