1989 3F-E Fuel Damper issues!

[belouder]

Just finished fixing timing cover plate leak, de-smog, PS line replacement and took off A/C stuff. Started the truck, ran great (ta-da!!) and shut it off after a few minutes. No drips-or so I thought. Smelled fuel and heard dripping and investigation found fuel coming out of the fuel pressure damper at the rear of the fuel rail. I took the cap off and fuel was coming out of the screw hole (screw was a bit loose).

Digging around in Mud tells me there is a diaphragm in there that most likely has failed. Need to replace it. Which brings me to my question:

How the heck do you get it out of there? I really really really don’t want to take off intake stuff but getting a wrench in there seems daunting. I suppose I could cut an end wrench to fit or purchase a crows foot wrench. Do folks know what size it is? Does the damper have a banjo bolt that goes in where the fuel line comes in?

Thoughts?

And is this part still available OEM?

Thx!!!

Bri

 

[diesellibrarian]

It's a pain, but you can replace the fuel pulsation damper without removing any intake stuff. I used a crow's foot socket that I ground down a bit to make it fit. I wanna say it was 22 or 23mm.

I don't know if they're available OEM. I got mine from NAPA and it works fine. If I recall, the new FDP came with a couple of crush washers.

It's a really simple repair in a really awkward spot. Good luck!

 

[belouder]

Diesellibrarian-thanks-it was 22mm which I found at AutoZone of all places. CityRacer has an OEM part with the crush washers so it’s on its way. AutoZone did show an aftermarket part which was the same price as CityRacer.

Question-while spending time around the rest of the engine I noticed the main wiring harness that comes through this area to all the sensors and injectors is routed in a way that doesn’t look factory. Goes right over the rest of the valve cover (laying in it) and isn’t in any of what look like the harness retainers. It’s very stiff probably brittle and I’m leery to move it back to what I think is it’s original routing-it looks like possibly the engine was removed or seriously torn down and when put back it wasn’t restored to its original routing.

Not sure if I should worry about this but I’d be curious to see pics of where this harness should go.

 

[Spook50]

Diesellibrarian-thanks-it was 22mm which I found at AutoZone of all places. CityRacer has an OEM part with the crush washers so it’s on its way. AutoZone did show an aftermarket part which was the same price as CityRacer.

Question-while spending time around the rest of the engine I noticed the main wiring harness that comes through this area to all the sensors and injectors is routed in a way that doesn’t look factory. Goes right over the rest of the valve cover (laying in it) and isn’t in any of what look like the harness retainers. It’s very stiff probably brittle and I’m leery to move it back to what I think is it’s original routing-it looks like possibly the engine was removed or seriously torn down and when put back it wasn’t restored to its original routing.

Not sure if I should worry about this but I’d be curious to see pics of where this harness should go.

Do you have a pic of the harness? Mine has never been touched from the factory, so I can take a peek and see if they're different.

 

[belouder]

I’ll take some pics tonight and thx!

Bri