Hi Guys

I am looking at fuel tank filter. Has anyone used either the Guglatech "fuel neck prefilter"(seems very expensive for what it is) or the Mr Funnel f1(cheaper but is more messing around)

Thanks

I know a V-Stromer who used a Gulgatech (is that the Italian one?) and it caught a whole lot of crap before it got to the fuel pump in Asia.
There are other fuel socks around.
Was it that expensive - 80eu or smth?
I suppose you could MYO - the fabric looks familiar.
Mr Funnel would be a faff on a bike, IMO.

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Morocco Overland 4 (2025) • Trans Morocco Trail

I have the Guglatech neck filter on my 790 Adv. It seems like a pretty effective filter but does make filling rather slow. Firstly because the fuel has to flow through the filter under gravity. Secondly, as you fill the tank the displaced air comes out of the filler cap, but now has to flow out through the wet filter. This means as you get to the top you get a lot of frothing which slows the filling process even more. It's a hassle but for the benefit of knowing my fuel pump is protected going through the Stans I'll put up with it.

Fuel pump problems are common in that part of the world and there are plenty of stories of people burning them out, either because the upstream filter blocks so they run dry, or else because the downstream filter between the pump and injectors blocks causing the pump to run excessively high pressures. Either way avoiding dust in the pump is essential.

For this reason I've also got (but haven't yet fitted) the Guglatech filter that goes in the tank and covers the pump. Belt and braces!

Thanks guys I think that Guglatech is the way forward, less faf.

I got a Guglatech Mazinga for my 2014 KTM690 Enduro, brilliant idea but unfortunately it won't fit, seems that the tolerance in the opening of the tank is too tight to accept the fuel pump casing with the Mazinga over the top.
The pump itself is a tight fit so I'll have to get the file out next time I have the tank opened.
A simple but sensible bit of kit.

I've also removed the in tank filter and fitted a Golan re-usable external and will be using a FloTool F1NC meantime because it's also very simple and it works!

I did try the ProFilter tank neck sock but it wasn't for me.

hi,

I have been using them for all my trips since 2015, transafrica round around, more than 90.000 km and never an issue, I have been using all generations on my KTM 990 never suffered from fuel filter or pump issues, I would never drive any bike without, shame they haven't finished the air filter!!

Mr Funnel works around 150 microns last time I checked, Guglatech made a video comparing all filters brands and models showing how effective they are ... plenty of adventurers use them happily, nothing compares !

get them

ciao

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www.fbexpeditions.it

I’m riding across to Bangkok from April 2020 from U.K. and intend to fit the neck filter....do you think it necessary to fit the filter over the pump too ?

I'm thinking about the same. Fiter for filler neck and pump.
Its recommend by Gugglatech to use both, but I'm doubt. In my opinion its sufficient to only use the filter for the fuel pump. I don't like to have difficulties while refueling due to the filler neck filter (its a KTM 790 ADV R)

I've also tried a Profilter tank filler filter on my 690 Enduro and found it to be frustratingly slow to fill so I'm going to somehow make the pump ' Mazinga cover ' work as a fit and forget item.
Also have a look at the Golan 10 micron washable filter with the intention of fitting it between the tank and injector. Expensive but it has almost limitless use.

Golan Super Mini Filter RRP 383

Sorry, can't comment on the 790.

Update: I've now had the time to try and fit the "Mazinga" pump cover filter and have some experience to share.

First, as another contributor commented, it doesn't fit. When you add the thickness of the filter to the pump it is too large to go through the (quite close tolerance) hole in the tank. You get so far and the filter just jams and concertinas up, and there is no way it will go any further. Both a KTM dealer and myself have tried this now and we came to the same conclusion. I suppose it would be possible to dremel or scrape out the hole in the tank, but I didn't want to do this - the surface of the tank needs to be perfectly flat an undamaged for the pump to seat on, so any damage or excessive enlargement of the hole and fuel will leak past the seal. With replacement tanks costing over £1,000 this was not something I'm willing to risk.

Second, having looked closely at the pump I believe this filter gives no benefit, in fact it could make the blockage risk worse. Despite being a large surface area of excellent filtration material there is no point in covering the entire pump. The fuel inlet is a small hole about 4mm diameter right at the base of the pump sidewall, so the only part of the filter that is doing anything is the small section of gauze covering that hole. If there is dirt in the tank that part of the filter will block long before the inbuilt filter in the pump, starving it and causing all the burnout problems we want to avoid.

In summary, the tank neck filter works, albeit with disadvantages, but the pump sock filter is a waste of money.

This is just my experience, if anyone would like a 790/890 pump sock filter ("Mazinga") it's yours for £30 (half price), never fitted or used