Pump and filters.

[Nick]

Last year due to rust in the tank I had to buy a new pump and filters, I got the suzuki pump and filters so all I had to do was unscrew my old one and fit the new one. This unit was just shy of 600 quid, what a rip off. I tried to clean out the old filters, the tea bag one was easy but the high pressure one was just about impossible and I wasn't sure on the pump. So if I renew the pump available separately then I find the filters are no good I land up buying the whole thing + the pump again as the high pressure filter is not available separately. So was interested to read about the one on eBay for 60 quid, is this pump and filters a direct plug and play or just the pump. As they are putting more ethanol in our petrol I am sure I will get this problem again. If any one has got the ebay pump or knows what you get I would be grateful if you could let me know, thanks nick.

[Hooli]

The high pressure filter is available separately. It's about £150 on it's own, I've replaced them every 50k miles or so when performance drops. There is a guide on here somewhere to convert to an external high pressure filter.

The pump is a generic Mitsubishi part as used in several cars so can be got cheaper too.

[Snapey]

In your first couple of sentences you say you bought a new pump & filter so why are you asking about buying another one? If you've still got the old one it will be better than new with a 4mm drill & external filter.

[Andre]

The HFP-384-U pump from Quantum Fuel Systems (www.highflowfuel.com) works well for me. Got it over Amazon. Comes with the teabag and the rubber bush (OEM part# 15114-35F00)

The high pressure filter only comes from Suzuki for high $$.

I have successfully cleaned the high pressure filter successfully with pressurized air (reversed to normal flow). Used a piece of rubber, made a hole in it as a seal for the air pressure thingy. Closed off one of the openings in the filter housing with a thumb,  then gave it some blasts and all the crud come out.

Now I get 45 PSI fuel pressure and 1450 ml/30 seconds flow compared to 41 PSI and 950 ml.

[RickC]

https://gsx1400owners.org/forum/index.php?topic=590.45

https://www.vstrom.info/Smf/index.php/topic,6105.0.html

[Nick]

Well I am all fixed up now but the Increase in ethanol in our fuel means more rust in the tank and more filter problems. I have started using ethanol fuel fighter at every fill now but to early as yet to say if it works. In the meantime I want to explore other options of pump and filters for the future. Thanks for your help. Nick.

[Andre]

I feel lucky as we have 2 brands here that sell ethanol free premiums. I still found rust in my high-pressure filter and when I put a new pump in, I saw where it came from: the "counter-ring" inside the top of the tank (for the lock's screws). Otherwise the tank is rust free. I make it a point to fill the tank to the hilt in order to minimize condensation, giving the bike a little shake every once and a while.

Also I put some oil down the overflow pipe for protection as I have heard a number of times that these pipes, which run through the tank, spring a leak due to being rusted through.

[Mick_J]

Well I am all fixed up now but the Increase in ethanol in our fuel means more rust in the tank and more filter problems. I have started using ethanol fuel fighter at every fill now but to early as yet to say if it works. In the meantime I want to explore other options of pump and filters for the future. Thanks for your help. Nick.

Nick, have you got an Esso garage near you, their premium super unleaded fuel is ethanol free.  Unless you live in Devon or Teesside.

[Hooli]

My tank isn't rusty & I bet it's had more ethanol in than yours.

[KiwiCol]

your gas doesn't stay in the tank long enough to absorb any moisture Hooli

[grog]

Andre, oil down the overflow i like. Where do you put the oil in, is that the little hole a lot of us have enlarged? Sorry for being dumb but i am sometimes.

[KiwiCol]

It'd be where the spill / overflow goes Grog, around the outside of the filler hole, that's where the pipe runs from.  Putting it into the hole we've enlarged would be making a 2 stroke mix.

[SheepDog]

Completed the install of an external High Pressure fuel filter and seems all sweet.

......

The high pressure filter only comes from Suzuki for high $$.

I have successfully cleaned the high pressure filter successfully with pressurized air (reversed to normal flow). Used a piece of rubber, made a hole in it as a seal for the air pressure thingy. Closed off one of the openings in the filter housing with a thumb,  then gave it some blasts and all the crud come out.
......

I cleaned the high pressure filter with brake cleaner and pressurized air and crud came out BUT decided to drill bypass hole anyway and installed an AeroFlow filter (yeah it's 30 micron but I just had the injectors checked/cleaned/and filters replaced. The old injector filters were pretty dirty). Bike seems to fire pretty well but haven't taken it out yet. Still waiting for my Morgan CarbTune Pro to come in the mail to balance the airflow



I used a $2 metal plate from Bunnings for my mount (shaped it down to size to fit) and worked well.   
https://www.bunnings.com.au/pryda-100-x-190mm-nail-on-connector-plate_p2430021

[grog]

Well done Sheepy. Can of worms for some, not me. Itll run so nicely. Let us know your thoughts later. From now on just a clean out every so often.

[SheepDog]

Managed a quick jaunt on the bike, 50 k's out and 50 k's back (as per our new Covid-19 ease of restrictions).
Engine is 'crisper' in operation. Very easy and smooth through acceleration.
For a bike that is 13 years old just short of 100,000k's it seems, to me, to operate as if relatively new.
Just the benefits of regular maintenance and good mods.