Skip the auto shop - Our mechanics make house calls

Q: Engine shakes when fuel is added

asked by on

When I put fuel into my car, the engine shakes. It was right after I had the transmission serviced. It is also making a knocking-type of sound. A friend suggested that it might be the motor mounts, but I think my car is front-wheel drive (so mounts would be on top and that wouldn’t be the transmission). Is that correct that it’s not the motor mounts and what is your advice for repairing this problem?

Hello! If the rubber bushings and motor mounts are really bad then it could cause a knocking noise. There should also be transmission mounts as well. I suggest to check out the motor mounts and transmission mounts for wear and tear. I recommend having a qualified technician diagnose the noise in person to determine if the noise is related to defective mounts. Once the problem is pinpointed, an accurate repair can be made.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Need a way to drain out 1 year old gasoline sitting in an otherwise good car.

Hi there. If the fuel is only a year old, then it should be fine to drive off and fill up with fresh gas as it runs out. If you really want to get the fuel out of the tank,...

Q: Car is revving high constantly with loud noise and makes the engine sluggish

The most common cause of this revving is either a stuck throttle or the mass airflow (MAF) sensor. This fault should be addressed as soon as possible for normal operation as this revving can become dangerous if the vehicle is...

Q: Engine starts to rev up on its own

You may be having a problem with the throttle position sensor or throttle pedal sensor. Have the system scanned to see if any problems or codes are for the throttle position. Also, make sure the floor mat or carpet is...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...