saltytheseadog Posted November 11, 2023 Share Posted November 11, 2023 I'm not sure what the device is at the delivery end of the fuel pump after it tee's off but mine has rusted out completely. It looks like one of the fuel line dampers found just downstream of the tee and throughout the vehicle. Questions ; Is it necessary ? How is it attached, mine is too rusty to tell ? Quote Link to comment Share on other sites More sharing options...
el_freddo Posted November 12, 2023 Share Posted November 12, 2023 What year and model are we taking about here? Is the fuel pump in the engine bay or forward of the fuel tank? Got a pic of what you’re working with? Cheers Bennie Quote Link to comment Share on other sites More sharing options...
azdave Posted November 13, 2023 Share Posted November 13, 2023 My FI 87 DL had a pressure damper at the output of the pump that looks much like the ones under the hood. It was leaking out the relief hole so I plugged that with a small screw which also disabled the damper affect. The pump died entirely maybe 4 months later and I installed a generic pump with no damper. It been running like that for over 4000 miles. https://photos.app.goo.gl/K7WV32BMyWhANLZX7 Quote Link to comment Share on other sites More sharing options...
saltytheseadog Posted November 14, 2023 Author Share Posted November 14, 2023 That's my unit without the rust. The end of the damper unit is totally rusted away. It looks from the photo like it may thread on to the tee in which case I may be able to unthread it and put a plug in to save the pump. The unit is on a car at a remote property with less than a mile of roads. If I can get another 100 miles out it then it will probably outlive me. Quote Link to comment Share on other sites More sharing options...
azdave Posted November 14, 2023 Share Posted November 14, 2023 11 hours ago, saltytheseadog said: ...I may be able to unthread it and put a plug in to save the pump. You certainly don't need the damper so if you can plug it and go, then you've saved the hassle of a pump swap. Quote Link to comment Share on other sites More sharing options...
saltytheseadog Posted November 14, 2023 Author Share Posted November 14, 2023 The rusted damper appears to have been a press fit over the tee coming off the pump. The hole was a little big for a pipe tap and the depth was limited but I was able to tap a few threads and install a pipe plug with a generous amount of seal all which is gasoline resistant . My first choice was an epoxy based product but unless specific to gasoline use, may break down. The test will be whether is will withstand the pressure. Quote Link to comment Share on other sites More sharing options...
azdave Posted November 14, 2023 Share Posted November 14, 2023 (edited) 2 hours ago, saltytheseadog said: The test will be whether is will withstand the pressure. My engine is SPFI so roughly 27 PSI fuel pressure is typical for me. You'll probably be fine as long as the tapped hole (plastic?) doesn't crack where the plug is threaded in. Edited November 14, 2023 by azdave Quote Link to comment Share on other sites More sharing options...
saltytheseadog Posted November 15, 2023 Author Share Posted November 15, 2023 The tapped hole was steel Quote Link to comment Share on other sites More sharing options...
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