long crank from cold

wolfe · 02-28-2018, 02:23 PM

The last couple of days I've been getting long cranks on my 128i n52. Charged the battery, but the issue is still there. it fires right back up when started from warm, but if left to sit for ~30+ minutes it'll long crank again.

Does this sound like a fuel pressure regulator or fuel pump failure, or should I be looking somewhere else?

Car has 75k miles, and is on the original fuel filter. Only ever sees shell v power gas.

thank you

Zombie_Head · 03-01-2018, 03:46 AM

If i am not mistaken, there is no fuel filter in these cars, at least they are non serviceable and will last the lifetime of the car.

Long cranks when cold usually indicate a battery issue, do you get any error codes? Can you determine the voltage at least from the battery? It maybe the fuel pump, but since that problem goes away when warm, i am leaning towards the battery.

Maybe someone can chime in about this.

dojk · 04-15-2018, 10:09 PM

How long is considered a long crank?

02-28-2018, 02:23 PM	#1
wolfe Captain 134 Rep 613 Posts Drives: e82 / e70 / r56 / r60 Join Date: Apr 2010 Location: USA iTrader: (1)	long crank from cold - fuel pump or pressure regulator? The last couple of days I've been getting long cranks on my 128i n52. Charged the battery, but the issue is still there. it fires right back up when started from warm, but if left to sit for ~30+ minutes it'll long crank again. Does this sound like a fuel pressure regulator or fuel pump failure, or should I be looking somewhere else? Car has 75k miles, and is on the original fuel filter. Only ever sees shell v power gas. thank you
	Appreciate 0 Tweet Quote

03-01-2018, 03:46 AM	#2
Zombie_Head Captain 594 Rep 704 Posts Drives: E30 325i 4-Door Join Date: Dec 2017 Location: Bavaria iTrader: (0)	If i am not mistaken, there is no fuel filter in these cars, at least they are non serviceable and will last the lifetime of the car. Long cranks when cold usually indicate a battery issue, do you get any error codes? Can you determine the voltage at least from the battery? It maybe the fuel pump, but since that problem goes away when warm, i am leaning towards the battery. Maybe someone can chime in about this.
	Appreciate 0 Quote

04-15-2018, 10:09 PM	#3
dojk Private First Class 19 Rep 179 Posts Drives: E82 135i Join Date: Nov 2010 Location: Malaysia iTrader: (0)	How long is considered a long crank?
	Appreciate 0 Quote