Matryx RMK - fuel pump issue

[adamg]

My RMK started having a squeeling noisy fuel pump on day 5, ~350km.

On day 12 I had my first limp mode plus code for low fuel pressure power cut. It would cut power when I tried to do big, long pulls at full throttle (like climbing up Boulder's Turbo hill).

On day 15, 1000km, it became unrideable. I could only go full throttle for about 1-2 seconds before it would go into limp mode.

Now it's going into the dealer for service and I'm bringing out the backup sled to finish the trip.

 

[LUCKY 7]

You are in an elite group of many. Every one that I kmnow with new 2022's have been down for the fuel pump.

 

[Got boost want snow]

I have 860 km pump still working but very noisy.

 

[snochuk]

About 500km on my sled and no issues at all yet.
Thought I heard a whistle a couple times for a few seconds but the sled has been flawless.

 

[jrusher]

I’m around 1000 km now no issues yet . I read a thread on SW that Polaris has new pick up socks

 

[snopro]

About 500km on my sled and no issues at all yet.
Thought I heard a whistle a couple times for a few seconds but the sled has been flawless.

Good looking Doo drive by?? Sorry Randy. I had to. Lol

 

[Snow Bro]

I hope that Polaris has a fix. The season is getting towards the end.
My sled has been in for repairs longer than i expected and I can't really complain as others are just getting their sleds.
My friend was just telling me how well his boost matryx with a noisy fuel pump had been working. He was telling me it was only a few machines with the low fuel pressure problem. I told him I believe its more prevalent than he thinks.
Next day he made a bigger pull up a hill and he joined the club with weak fuel pumps.

 

[Got boost want snow]

This may be why I haven’t had an issue no long pulls on the handle.

 

[snochuk]

Anybody have an audio of what noisy is???

 

[adamg]

Anybody have an audio of what noisy is???

It is louder with the fuel cap removed.

 

[sledhead9825]

Put some fuel in it

 

[Snow Bro]

I stopped by my local dealership and got good news. It looks like my fuel pump "may" be in by March 19.

 

[line8]

This noise is not isolated to matryx.
The last 2 model years Khaos’ do it also.
Is it the pump?

 

[Snow Bro]

I left my sled at the dealership on Jan.22 and picked it up today.
A new fuel pump was installed. No fuel pump noise anymore.
I hope it lasts for awhile along with the limp mode- low fuel pump pressure alerts.

 

[snoflake]

I have a buddie who put some foil back heat insulation between the fuel tank and tunnel. Said it cured the problem? someone somewhere said the issue was the fuel getting too hot, and making the pick up tube hose soft enough to collapse on itself starving the fuel pump? anyone else heard of this problem/fix?

 

[JMCX]

That sounds plausible. Years ago a buddy and l had our Pros both make that same sound and start running bad. It was a warm spring day and we were running hot on our way to the alpine. Fuel tanks were noticeably warm. Once everything cooled, back to normal.

 

[FranktheTank]

I left my sled at the dealership on Jan.22 and picked it up today.
A new fuel pump was installed. No fuel pump noise anymore.
I hope it lasts for awhile along with the limp mode- low fuel pump pressure alerts.

Missed your winter sledding that's to bad

 

[Snow Bro]

I'm curious if my replacement pump is an updated part or the same problematic part.
My friend's matryx boost is now down for the season with fuel pump failure.
I noticed this morning that the Muskoka Freeriders Polaris RMK Boost is also currently done for the season with a fuel pump issue.
I hope that Polaris comes up with a fix for the fuel pumps soon.

 

[Snow Bro]

I called my dealership and I was advised that the pump is the same part number.
The good news is that Polaris has recently released a replaceable fuel sock. This sounds promising.

 

[snochuk]

Hear the fuel pump pickup sock is substantially finer in 2022. Down to 12 microns from 25??
12 microns almost no flow?
May not starve the motor but may keep the pump overworked.