Skip the auto shop - Our mechanics make house calls

Q: Old BMW's fuel pump powered with 12 volts is clogged

asked by on

I took out the fuel pump from the old BMW and powered it with a 12-volt but it blocks directly. I guess it is clogged. Is there any way to get it running again?

A: Unfortunately, there isn’t. Those things ar...

Unfortunately, there isn’t. Those things are electronic and if the brushes finally wear out, it’s time for a new pump. The way you test it is--you get the inlet to the pump and put a little hose on it and stick it in a little container of gasoline and have the pump sticking by a bucket, and see if it pumps the fluid because you don’t want it running dry. If you do that and it doesn’t pump, it is just shut and it is time for a new pump. Especially if it is an old BMW, these will tend to wear out over time. If you need help with this, I would have a technician, such as one from YourMechanic, diagnose your car and replace your fuel pump if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I went in for an oil change at about 48k miles; now maintenance light keeps coming on.

Your vehicle has sub menus for oil, brakes, emissions, and other categories of maintenance. If you are referring to the oil maintenance reminder symbol, that reminder is based on elapsed time as well as vehicle operating conditions. So, even though...

Q: How often should I change the rear differential fluid on a 2016 Acura RDX?

Hi there. The fluid should be changed about every 15,000 to 20,000 miles to remove all contanimates and metal from the gears as they wear. I recommend having your differential serviced and use the OEM specified lubrication to maximize the...

Q: Difficult startup with a lot of idling when it's cold

One of the main things that can prevent a vehicle from starting in the cold is the battery. Batteries for automobiles are rated by cold cranking amps. This measurement is the amount of amperage the battery can produce at zero...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...