Xm plug question

[AaronQ]

Hey gang quick thought.
Had both of our 15 xm 174s up a ride the other day and the first sled was running pretty good but had a funny miss just once in a while going up the trail. Got to the alpine and seemed to clean up. Rode a few hours and then it just sputtered once and died. Just like it ran out of fuel. Got it rolled over off the hill and to the bottom of the glacier and it just fired back up after Maye 3 or 4 pulls. Played around for a bit and then virtually the same thing. Running good then just one little sputter and it died. Wouldn't start at all. Would roll over give a short fire just one burp then quit with a backfire. Didn't pull the plugs cause they're gay like aids without a swivel and flex head ratchet but checked coils and both coils have excellent spark. Anyway drug it back to the trucks got back to town. Phoned the small engine guy who did the services this fall and asked him if he made sure that he indexed the plugs and he had no idea what I was talking about. So. Sounds like he took em out regapped cleaned and threw em back in. Anyone ever had a plug indexed wrong and what was the symptoms?
The second sled was throwing a code and running rough on the way out of the area the other night on our rescue mission too.

 

[mclean]

I read on here somewhere that indexing is for the benefit of the plugs and not really anything else. Not sure how true that is.


Did you get a bad batch of fuel prehaps?

 

[MK4TDI]

Indexing isnt too complicated on the ETEC's like BRP wanted you to believe.

Could be fuel related too when was the last time the fuel filter was changed ?

 

[AreWeThereYet]

Same fuel,.. could be fuel issue with sleds,.. Or for yours when I had my XM the fuel filter was clogged with black crude,.. which I later found riding in the mountains was the fuel pressure regulator failing. I would start there,.. you can get them at NAPA for like $5

 

[AaronQ]

Filters were done on both start of 17/18 winter. 1500 km on either. I'll swap them too. Is there a fuel pressure spec on these units too? Could be a pump failing.
I would probably rule out bad fuel as we have a bulk tank at the farm that 6 machines have been running out of and none of them have had problems. Yet.

 

[AreWeThereYet]

Filters were done on both start of 17/18 winter. 1500 km on either. I'll swap them too. Is there a fuel pressure spec on these units too? Could be a pump failing.
I would probably rule out bad fuel as we have a bulk tank at the farm that 6 machines have been running out of and none of them have had problems. Yet.

There is a thread somewhere in the XM section that you could check out,.. you aren't the only one that's had this issue.

 

[maxwell]

2 sleds? almost sounds like a bad fuel issue to me? for whatever reason the ETEC is extremely picky about bad fuel. i had to drain the entire tank of fuel out of my 2013 that only had summer old gas in it. wouldn't run worth a crap, would sputter and die. Put fresh fuel in and away it went ran like a top. Put that old gas in my quad and it ran perfect.

The plug indexing has nothing to do with how it runs. It apparently helps fuel efficiency but i know first hand they run just fine without being indexed.

I would change the plugs/fuel filter. Drain and add fresh fuel before tearing too much apart

 

[AaronQ]

2 sleds? almost sounds like a bad fuel issue to me? for whatever reason the ETEC is extremely picky about bad fuel. i had to drain the entire tank of fuel out of my 2013 that only had summer old gas in it. wouldn't run worth a crap, would sputter and die. Put fresh fuel in and away it went ran like a top. Put that old gas in my quad and it ran perfect.

The plug indexing has nothing to do with how it runs. It apparently helps fuel efficiency but i know first hand they run just fine without being indexed.

I would change the plugs/fuel filter. Drain and add fresh fuel before tearing too much apart

I'll flip the furnace on in the trailer and see if I can find a filter in Invermere. Anyone have a part number for plugs and filter laying around?

 

[pano-dude]

Lordco in town or napa has the filters. Gas line antifreeze also, it's been super cold and you have a heated trailer? Cold empty tank put into warm trailer might be the issue.

 

[AreWeThereYet]

I'll flip the furnace on in the trailer and see if I can find a filter in Invermere. Anyone have a part number for plugs and filter laying around?

Fuel filter

Wix 33095
Napa 3095
Walbro 125-199

Plugs I don't remember sorry,.. but I ran the factory ones in my summit when I had it.

 

[AaronQ]

Lordco in town or napa has the filters. Gas line antifreeze also, it's been super cold and you have a heated trailer? Cold empty tank put into warm trailer might be the issue.

We have a tank mounted on the trailer and we fill them right up before we load them to eliminate condensation issues.
I'll give them a call thanks Darcy

 

[MK4TDI]

Filters were done on both start of 17/18 winter. 1500 km on either. I'll swap them too. Is there a fuel pressure spec on these units too? Could be a pump failing.
I would probably rule out bad fuel as we have a bulk tank at the farm that 6 machines have been running out of and none of them have had problems. Yet.

44 psi at all RPM, you can get the pump out of the states for about $130 off Amazon. Regulator still has to come from BRP

 

[toyz]

You have a part number for the after market fuel pump from Amazon.

 

[MK4TDI]

You have a part number for the after market fuel pump from Amazon.

Check this out at Amazon.ca
HFP-383 Ski-Doo MX Z 500 600 600 E-TEC Snowmobile Fuel Pump with Strainer https://www.amazon.ca/dp/B07F5Z747X/ref=cm_sw_r_other_apa_i_IHzGCbCGYNCM5

Comes from these guys.

 

[Stevemtb]

This is exactly what my sled did, and I also thought it was a bad plug or bad fuel (still haven’t ruled out bad fuel). Would sputter once in a while then went splat. Would fire up once in a while after. No other indicators of it being something serious. See my Monoblock Blues thread for the details there... got a compression tester with ya?

 

[AaronQ]

Well got back to the farm today. Pulled off the fuel filter to take a look. Clean as a whistle. Threw the new one in anyways. Pulled the plugs. Both were oriented straight down. Pretty black and ugly but both still had good spark. Stuck a compression gauge in. Not good lol. Clutch side at 30 ish lbs and rh at 120! Think I found my problem

 

[MK4TDI]

Well got back to the farm today. Pulled off the fuel filter to take a look. Clean as a whistle. Threw the new one in anyways. Pulled the plugs. Both were oriented straight down. Pretty black and ugly but both still had good spark. Stuck a compression gauge in. Not good lol. Clutch side at 30 ish lbs and rh at 120! Think I found my problem

Welll that's unfortunate. But at least you found it, how many miles?

 

[AaronQ]

Welll that's unfortunate. But at least you found it, how many miles?

Not enough. 1600 km i think. Wondering if buddy before me pulled the speedo plug and rode it to not click it up.

 

[MK4TDI]

Not enough. 1600 km i think. Wondering if buddy before me pulled the speedo plug and rode it to not click it up.

That's one way to keep the KM off, the hour meter however always runs, the one on the gauge cluster can be reset but the one stored in the ECU will have everything. Will need a buds scan for that though.

 

[tex78]

Lordco in town or napa has the filters. Gas line antifreeze also, it's been super cold and you have a heated trailer? Cold empty tank put into warm trailer might be the issue.

No gas line antifreeze in 2 smoke sleds

It seporates the oil from gas


Isopropyl alcohol or sea foam is what to use