CHANGING THE FUEL FILTER IN YOUR PRO

LoudHandle · Feb 21, 2017

bryceraisanen said:
Update: I think this fuel filter sucks. It does not follow the stock contour very well. You can see in the picture that it naturally wants to sit about an inch higher than the bracket it is sposed to fit in. When I cram it into the bracket, it puts a lot of stress on the air box (tries to lift it up) and also on the connection up at the gas tank.

Pretty sure I'm gonna send it back and buy a different one.

Here it is in the bracket but if I take my hand off it, it's on the verge of popping out.

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Sorry pics sideways

I'm gonna guess that is one of the SPI's that where made with the hoses too long. Some were so long that the hose kinked and then blew / leaked. Safe bet is to NOT use it.

bryceraisanen · Feb 23, 2017

LoudHandle said:
I'm gonna guess that is one of the SPI's that where made with the hoses too long. Some were so long that the hose kinked and then blew / leaked. Safe bet is to NOT use it.

Almost seemed like the bottom half was too long and the top half was too short. Basically filter shoulda moved about 1/2" toward fuel rail.

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mountainhorse · Feb 24, 2017

To answer the post above...
The SPI filter and the Synerject(OEM) filters are different inside...the Synerject has more filter media and looks to be a bit more robust than the SPI...But the price point diff is huge....

.

bryceraisanen · Feb 24, 2017

mountainhorse said:
To answer the post above...
The SPI filter and the Synerject(OEM) filters are different inside...the Synerject has more filter media and looks to be a bit more robust than the SPI...But the price point diff is huge....

.

Did u ever come up with a recommendation after all that testing u were doing couple years ago?

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mountainhorse · Feb 25, 2017

Recommendation for what specifically?

My test was to see if Race Gas, AV Gas, Ethanol 91, or even toluene disolved the filters or the adhesive in them... I did not find any of that in stock or SPI.

mountainhorse · Dec 22, 2017

seef158 · Jan 11, 2018

Burn downs?

I am curious how many people have had a piston failure on their 800s and actually did replace the fuel filter annually? I've parted out numerous iq sleds with 700cfis that blew up and none of them had had the fuel filters changed. I change mine every year and haven't had any issues.... anyone else think there is a major correlation between lack of fuel filter maintenance and piston failures?

knocksum · Jan 13, 2018

Definitely notice that.

Still the best fuel filter is still the EricW and mountainhorse Napa mod. Got most of my riding buddies converted. Check it out.

sledhed · Jan 13, 2018

knocksum said:
Definitely notice that.

Still the best fuel filter is still the EricW and mountainhorse Napa mod. Got most of my riding buddies converted. Check it out.

Can you provide a link to it? I think I remember that thread but the search does not work very well... have a 2015 Pro with the newer style, would be great to convert it to something cheaper and replace it more often... buddy just picked up a 2014 Pro too...

knocksum · Jan 13, 2018

https://www.snowest.com/forum/archive/index.php/t-339626.html

PS: Don’t use the search function on the forum. Use google. Type this in your browser for an example.

Fuel filter mod site:www.snowest.com

RoostinRyan · Jan 14, 2018

seef158 said:
I am curious how many people have had a piston failure on their 800s and actually did replace the fuel filter annually? I've parted out numerous iq sleds with 700cfis that blew up and none of them had had the fuel filters changed. I change mine every year and haven't had any issues.... anyone else think there is a major correlation between lack of fuel filter maintenance and piston failures?

I just changed my fuel filter along with a couple of other things (spark plugs and wires and cleaned power valve ports). I was experiencing an intermittent (and increasingly more frequent) lean condition at wot. 17-19 on the afr guage. After doing these things the lean condition went away. I was definitely having issues with the ves and the ports were completely plugged up with carbon so I'm not sure if that was playing a factor in what I was seeing or if in fact it was the fuel filter limiting flow. I wish I would have kept the filter and cut it open. I'm gonna do the Napa mod for sure now, though. Definitely a lot better than what I came up with on short notice. My dealer didn't have a fuel filter for my 12 and tried to talk me out of changing it because, "you never have to change them because they are never a problem."

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mountainhorse · Jul 7, 2018

TTT for that time of the year.

Best to read from the first post.

Good luck !

Kyleb1989 · Dec 8, 2020

[QUOTE="99slpss, post: 3730130, twist and pull

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CHANGING THE FUEL FILTER IN YOUR PRO

LoudHandle

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bryceraisanen

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mountainhorse

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bryceraisanen

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mountainhorse

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mountainhorse

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seef158

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knocksum

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sledhed

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knocksum

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RoostinRyan

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mountainhorse

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Kyleb1989

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