what is this silver disc in the fuel line?

[P49Y-CY]

it is just before the connection to the fuel injector rails, right next to the throttle body

 

[BlksvtCobra01]

That is supposed to help the pulse of fuel going to the rail if I remember correctly.


Sent from my iPhone using Tapatalk

 

[Albatross]

BlksvtCobra01 is correct. It is a fuel pulsation damper. It smoothes out the fuel going into the line to compensate for the oscillations caused by the injectors.

 

[P49Y-CY]

thx - can it malfunction causing a restriction or somehow get clogged?

 

[Albatross]

I'm sure they can go bad although I have never seen one fail. They have a diaphragm inside them that could probably tear or rupture possibly causing a restriction. They could also leak.

 

[P49Y-CY]

okay thanks very much - i have isolated my stalling issue to a lack of fuel pressure so i want to try to rule out every possibility.

 

[gt347mustang]

Never seen one fail causing a restriction or leak.

 

[01yellercobra]

Mine is sitting in a box if you want to try it out.

 

[Albatross]

Have you replaced the fuel filter?

 

[P49Y-CY]

Mine is sitting in a box if you want to try it out.

thanks bob! i am going to try to nail down all the electrical possibilities first. cheers

Have you replaced the fuel filter?

yes, it has a new filter and i also tried swapping out all of the usual parts culprits

 

[Albatross]

I think your headed in the right direction with looking at electrical possibilities. Good luck man!

 

[ccq8le]

Do they use these on other 4.6L engines? Or is this a terminator exclusive part?

Good info and thanks for the thread!

 

[04DeadShort]

Consider the rubber hose in the fuel tank between the pumps and hat. Just went through this issue with a friends car. Replaced filter, fpdm, and fuel rail sensor. Finally dropped the tank and found the rubber hose had a slit in it. $5 dollar part cost about $300.

 

[BlksvtCobra01]

Do they use these on other 4.6L engines? Or is this a terminator exclusive part?

Good info and thanks for the thread!

All 4.6 Mustangs from that era.


Sent from my iPhone using Tapatalk

 

[Jwilso53]

I’m 95% sure ive looked through one of these and it was a straight through passage. If I haven’t thrown it away I have one sitting at home to look at

Consider the rubber hose in the fuel tank between the pumps and hat. Just went through this issue with a friends car. Replaced filter, fpdm, and fuel rail sensor. Finally dropped the tank and found the rubber hose had a slit in it. $5 dollar part cost about $300.

+1 the seal/O-ring on that line is also know to rip