Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Replace the High-Pressure Pump Bushing

Model: (Various brands) Various
Part: Pump

Video tutorial

If your car exhibits increased noise, reduced performance, a rough-running engine, or stalling, the causes may include fluctuations in pressure in the accumulator line, fuel pressure loss, insufficient adjustment, and reduced stroke of the pump piston.

All these issues are related to the high-pressure pump bushing that must be replaced.

Start the replacement by removing the engine cover and disconnecting the connector from the fuel pressure regulator valve on the high-pressure pump. Run the engine for 10 minutes, then turn it off and remove the oil sump to check for any traces of fuel.

Next, reattach the oil sump and proceed to work on the pump. Disconnect the vacuum hose from the pump located next to the fuel pump, and finally, remove all electrical connectors.

Loosen the fuel hoses and unscrew the three fastening bolts to remove the pump assembly, the pump, and finally the bushing. Conclude by inserting a new bushing and reassembling all parts.

Top up the oil and replace the filter, then close the engine compartment. Now your car will run beautifully.


Updated on 20 August 2026 by ScegliAuto


Related tutorials

How to Replace the Water/Oil Pump Seal on a Kawasaki Motorcycle
How to Replace the Water/Oil Pump Seal on a Kawasaki Motorcycle
(Various brands) Various How to replace the water/oil pump seal on a Kawasaki motorcycle. First, remove the cover, take off the underlying cap, and then the sealing disc and …
How to Replace the Seals on a Bosch Fuel Pump
How to Replace the Seals on a Bosch Fuel Pump
(Various brands) Various If you need to replace the seals on the fuel pump in your vehicle, follow the instructions provided in the description below and refer to the video a…
How a Low-Pressure Fuel Pump Works
How a Low-Pressure Fuel Pump Works
(Various brands) Various In this video, you will learn how a low-pressure fuel pump (diesel or petrol) works. These pumps are usually mounted directly inside the fuel tank an…

Other guides you may be interested in

How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

Watch the video!


by ScegliAuto

More videos