Bad acceleration after fuel tank is filled up

ARSED HOXHAJ

MEMBER
2006 MERCEDES BENZ R350
2.9L
V6
TURBO
4WD
AUTOMATIC
150,000 MILES

My car is the R 320 model. My car has bad acceleration after filling the fuel tank. It has automatic gearbox.
After I fill the fuel (diesel) and start the trip the car has bad acceleration. It does not exceed 1500 rpm and delayed to reach maximum speeds even though I pushed the gas pedal to the end.

Then when I stopped the car and rest for more than thirty minutes and start the trip again it gain the power again and it reaches 100 km/h very fast.

Can anyone tell me why this happens everytime I fill the tank?

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,690 POSTS

Hello,

It sounds like you have a primary pump that is going out and the weight of the fuel is causing the problem. Here is a guide that will give you an idea on what you are in for when doing the job.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Or you can cut a hole in the body, here is a diagram that will help you see what I'm talking about. (below)

Please let us know what happens, we are interested to see what it is.

Cheers, Ken

Image (Click to make bigger)

Bad acceleration after fuel tank is filled up

1 Reply

Please login or register to post a reply.

Related Fuel System Tank Content

Sponsored links