How to Replace a Fuel Injection Pressure Damper
Fuel injection pressure is regulated by the pressure dampers. If you start to see spikes in the pressure or can't maintain a constant level then the dampers need to be replaced. Anyone with basic knowledge of car repair can easily replace these and avoid the costs of a professional.
Step 1 - Disconnect the Battery
Anytime you are working around fuel you want to make sure you have dead connections. Disconnect the battery before doing anything else.
Step 2 - Locate the Dampers
Most cars have several dampers. These are found at each end of the fuel rains.
Step 3 - Getting to the Dampers
You will need to disconnect the heater hoses at the intake chamber, as well as the fuel pressure regulator line. Remove the top of the intake manifold to gain access. On some vehicles you may also need to remove the gaskets, which means you will end up needing to replace these as well.
Step 4 - Remove and Replace the Dampers
You should now have access to the dampers. On some vehicles these are bolted in place, and others will only require a flathead screwdriver to remove. Install the new dampers, and reverse your previous steps to put the connections back on.