Leave for a few minutes with ignition off then restarts and runs O.K. for another mile or so. Leave for 30 minutes with ignition off and then runs for about 4 miles again.
Have had most of the fuel system replaced plus new rotor arm, distributor head etc. Two different garages have given up saying they don't know what the problem is.
CAN ANYONE GIVE HELPFUL ADVICE PLEASE.
BMW 325i 1983, fuel problem. Car runs fine for about 4 miles and then engine fades to a tick over.?internet security software
Its does not sound electrical, so ignore the rotor arm etc.
It sounds like fuel flowrate to me, resulting in a drop in pressure, have you checked the fuel pump and all the lines?
It seems either the pump cannot keep up with the flow required or there is a blockage restricting the fuel flow rate.
Alternatively maybe it relates to temperature. I think BMs reduce fule pressure when the engine overheats so, if the engine temp is ok, it might be that sensor thats faulty. disconnect or short it out, it depends if its "open on fault", or "close on fault"
If you run the engine at 1500, 2000, 2500 RPM etc, does it fail at all these values. I wonder if it runs ok at 1500 then the fuel pump can keep up with that flow rate, but not higher.
BMW 325i 1983, fuel problem. Car runs fine for about 4 miles and then engine fades to a tick over.?moto guzzi
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