View Full Version : New pump install question

10-20-2006, 08:37 AM
I'm installing new Walbro Fuel pump. I have no instructions with it. A fuel line has been included with the pump. Is this to put in place of that inline dampner/pulser looking thing thats located in the tank on the fuel outlet of my stock pump? How important is that? what does it do? Do I pitch it?

10-20-2006, 08:46 AM
Yes, and yes. The dampener is mostly to keep things quiet and restricts flow.

10-20-2006, 10:26 AM
Super! thanks. One more question, what about the round black insulator tube that wraps around the pump? My new Walbro pump didn't come with one, and the one on the stock pump is tore and saggy. I assume this is mostly just to quieten the pump? Do I need to replace it?

10-21-2006, 04:25 AM
no big thing about it.

10-21-2006, 07:19 AM
No need for the pulsator or sound dampening sleeve. I hear a nice hum outside of my car when standing near the rear of the car. I kind of like it. Here's what the installed pump should look like. Notice no pulsator but the sleeve around the pump is in place.


10-21-2006, 08:52 AM
This might help.


10-21-2006, 02:27 PM
thanks for the link. Lots of good info. One more question, last one, I promise. (at least for today). I need to replace all the fuel hoses (all 6 of them, the 3 that are attached to the tank, and the 3 that attach right above the rear axle) all 6 are definetly prefabbed hoses. I've looked at local parts store, gbodyparts, and yearoneparts.com. Can't find them. I assume their no longer being made?

10-21-2006, 06:13 PM
Are you talking about the rubber hoses or the steel lines? I would think you could just buy rubber fuel injection hoses at any part store and cut to fit. If you're talking about the steel lines, there are companies that make pre-bent steel lines. Do a search. Or try these guys. I have bought GN steel tubes from them in the past. http://www.classictube.com/catalog.asp

10-23-2006, 05:47 AM
Im about to do a new pump myself, and read twice in that write up, that you know you done it right, if youre running rich now. ok, so im taking it ya just ease back the afpr and youre good to go again? right?

10-23-2006, 07:03 AM
Adjust your fuel pressure to whatever your chip-maker advises and then tune from there. If you're not sure, start with 43-44 offline.