I have a Mercedes w210, 250 turbo diesel, with 5 gears the car loses power, at 3 - 3.5 thousand rpm and does not accelerate anymore. I would thank yo

[redi]

I have a Mercedes w210, 250 turbo diesel, with 5 gears the car loses power, at 3 - 3.5 thousand rpm and does not accelerate anymore.
I would thank you if you help me!

 

[brandwooddixon]

Possible boost pipe split?