Originally Posted by ww1dm1 (Post 2118974)

My pump has been making odd noises for a while (as if the flow is inconsistent or something). However I can't find an original replacement anywhere close, the supposedly equivalent pumps offered by other companies have suspiciously low flow rates, I believe for a T4 the flow rate should be at least 150 lph @ 3 bar.

I'm pretty sure I've seen someone stating that they fit a Walbro GSS342 255 lph unit without any problems. I think it was 960kg? However I see that it lacks the little green pipe on the side, which as I understand throws the fuel into the fuel sender canister thing, and fuel is then picked up from there. Won't this cause any problems? Any other recommendations, maybe?

Originally Posted by S40 T4 LPG (Post 2119213)

My pump has been whining for about 60,000 mls.
So I am posting on this thread so I can find this useful info more easily when I need to change it. :)

Originally Posted by 960kg (Post 2119065)

It doesn`t cause any problems because the inlet is offset on the bottom of the pump so it is roughly equal to where the green spigot is by the time the filter plastic part is added.

The size hole on the offset inlet 342 is about the same size as the centre std. inlet.

The actual whole plastic pot (canister thingy) sits on the bottom of the tank and squashes up on the springs as you tighten the large ring nut on the top of the plastic pot. So the std. pump sucks in fuel through the filter actually from the bottom of the tank!.....so it can get clogged easier?

When the fuel is low the green spigot on the side of the std. pump takes over as it keeps the plastic pot filled with fuel so no hesitations when pulling away or going up steep hills.

On the 342 the offset inlet keeps the plastic pot filled anyway so fuel is there throughout but it is slightly higher than the std. and so does not drag up the crap and fill the filter so much.

I believe their are three filters around the the large filter and one has a one way valve in it to keep fuel in the plastic pot for when needed.

When fitting the 342 the bottom filters are kept but the one supplied is modified so not to use the gauze part ....

These are std. fitment to Subaru`s and they only use one filter so no problems at all.

The Walbro 342 keeps the plastic pot filled with fuel so no problems but keep the offset spigot to the rear of the tank as the std. Volvo one is.

Up to you what you fit but the 342 is reliable and supplies sufficient fuel for turning up the boost etc......and most of all cheaper than the Volvo Dealer one which i think they only sell the whole thing with the pot etc

Originally Posted by windy millar (Post 2120015)

http://www.glencoeltd.co.uk/walbro-i...-grj235-volvo/

This is the genuine replacement pump and from recent experience of the same issue, I would say it is worth every penny more simply due to the ease of changing over.

Originally Posted by 960kg (Post 2120879)

For anyone wanting to still fit the Walbro GSS342 you get no problems at all if you stick to the rules of fitting.

The engine will not misfire under a low tank as the pickup position is the same as the std. pump if you fit correctly.

You still have to use the std. filter on the bottom of the 342 as it has the valve to keep fuel in the pot!