Can bad fuel pump cause no crank?

mdimike · 01-11-2024, 06:38 AM

2005 with 226,000 miles. Original fuel pump.

Intermittent no crank. I removed rear seat and thumped on the fuel pump assembly with a hammer. Car started. Is this a coincidence?

My question: Shouldn't the car crank even if the fuel pump is bad, or does the computer need fuel pressure to satisfy criteria before allowing cranking?

Thank you!

Mike

mr2mike · 01-30-2024, 11:07 PM

Yes it should still crank. Check to see if starter is getting power.
Can also see off the fuel rail if you're getting fuel pressure.

01-11-2024, 06:38 AM	#1
mdimike Registered 0 Rep 1 Posts Drives: BMW x3 Join Date: Jan 2024 Location: Maine iTrader: (0)	Can bad fuel pump cause no crank? 2005 with 226,000 miles. Original fuel pump. Intermittent no crank. I removed rear seat and thumped on the fuel pump assembly with a hammer. Car started. Is this a coincidence? My question: Shouldn't the car crank even if the fuel pump is bad, or does the computer need fuel pressure to satisfy criteria before allowing cranking? Thank you! Mike
	Appreciate 0 Tweet Quote

01-30-2024, 11:07 PM	#2
mr2mike New Member 0 Rep 11 Posts Drives: X3 Join Date: Mar 2022 Location: Canada iTrader: (0)	Yes it should still crank. Check to see if starter is getting power. Can also see off the fuel rail if you're getting fuel pressure.
	Appreciate 0 Quote