Fuel injection damper

[DBean]

I’m looking for the most obsolete part ever built I’m guessing it’s the fuel injection regulator/damper any ideas in phoenix az

 

[alwaysFlOoReD]

Haven't seen that exact one, but its a fuel pressure regulator. If you can smell gas in the vacuum line its FUBAR.

 

[ericbphoto]

Which engine? On Rock Auto, I see the fuel pressure regulator and fuel pressure dampener listed for the 4.0l. Neither listed for the 3.0l and only the dampener listed for the 2.5l.

I never even heard of the fuel pressure dampener before. And I’m willing to bet a dollar that the same regulator and dampener would work on all 3 engines.

 

[alwaysFlOoReD]

I didn't known there was such a thing as a dampener. Today I learned...

 

[ericbphoto]

I didn't known there was such a thing as a dampener. Today I learned...

Me, too

 

[RonD]

When you have a Fuel rail with injectors and run fuel pressure in excess of 20psi you will run into problems with "pressure waves"

Each time an injector opens and closes there is a pressure wave generated in the fuel rail at that injector, i.e pressure drops(injector is open), pressure returns(injector closes)
When there are multiple injectors these pressure waves can increase themselves as they meet up, like "super waves" at the beach

A fuel pressure regulator(FPR) has a "rubber" diaphragm, the FPR serves two purposes, it maintains the fuel pressure but also prevents pressure wave "reflection" so stops the pressure waves from building up in the fuel rail

A Fuel Rail Damper is just the "rubber" diaphragm without the Regulator part, it absorbs, instead of reflecting, the pressure waves

The vacuum hose on an FPR helps maintain an average pressure in the fuel rail based on engine load(high and low vacuum levels)
But its also there for safety
If FPR should leak fuel is sucked into the intake manifold instead of dripping on the engine, HOT engine, lol

Damper has the vacuum hose just for safety reasons

Dampers were used on Rangers in 1998 and up when the FPR was moved to inside the gas tank with the fuel pump, that's also when fuel pressure was raised to 60psi, from the 1997 and earlier 35psi

 

[snoranger]

That damper was only used on ‘98’s for a short time. It’s no longer available from ford or aftermarket.
Part numbers:
Standard FDP22
Airtex 3g1007
Wells FD208

You may be able to track one down. I wish you luck.

 

[Uncle Gump]

I spent an hour or so cleaning up the off road truck and mini truck forums the other day. This post doesn't belong there either. I'm making a guess it's a 4.0L and moving it to the 4.0L forum.

 

[ericbphoto]

When you have a Fuel rail with injectors and run fuel pressure in excess of 20psi you will run into problems with "pressure waves"

Each time an injector opens and closes there is a pressure wave generated in the fuel rail at that injector, i.e pressure drops(injector is open), pressure returns(injector closes)
When there are multiple injectors these pressure waves can increase themselves as they meet up, like "super waves" at the beach

A fuel pressure regulator(FPR) has a "rubber" diaphragm, the FPR serves two purposes, it maintains the fuel pressure but also prevents pressure wave "reflection" so stops the pressure waves from building up in the fuel rail

A Fuel Rail Damper is just the "rubber" diaphragm without the Regulator part, it absorbs, instead of reflecting, the pressure waves

The vacuum hose on an FPR helps maintain an average pressure in the fuel rail based on engine load(high and low vacuum levels)
But its also there for safety
If FPR should leak fuel is sucked into the intake manifold instead of dripping on the engine, HOT engine, lol

Damper has the vacuum hose just for safety reasons

Dampers were used on Rangers in 1998 and up when the FPR was moved to inside the gas tank with the fuel pump, that's also when fuel pressure was raised to 60psi, from the 1997 and earlier 35psi

Thank you

 

[snoranger]

I spent an hour or so cleaning up the off road truck and mini truck forums the other day. This post doesn't belong there either. I'm making a guess it's a 4.0L and moving it to the 4.0L forum.

3.0l