2014 engine problems?

[WACT]

I really need some input and help. I have 2014 800 Pro (Spring Order) with 360 miles. The sled has run great and I've been really happy with it, but all of the sudden its having problems. I ride 10+ elevation and boondock trees. Yesterday after 9 mile ride up trail, I drop into 2+ powder and two turns into it the sled starts cutting out. The engine cuts outs/sputters. Not like a bog, but more like fuel, throttle, spark plug issue. It died and just wouldn't start, but when I finally got it running (pulling it onto its side seemed to help get it running) it sputtered really bad and barely would go. Any time I tried to give it more throttle the engine would chop out worse and almost stop running. I got it back down to the trailer and drop it off at dealer. No codes came up, fuel check ok, dealer adjusted throttle (tps?) and rode it and couldn't make issue reappear. Pick it up, took it out again today, 30 minutes into riding and it started all over again. Funny thing today though, on the way back to truck it clear it self out, so I rode it some more hard for 20 minutes. It actually felt, sounded and rode better during this time then before the problem started up earlier in the day, but then started chopping out again and I headed in. Starting to wonder if its a fuel pump or computer issue? Thank you for any input or thoughts.

 

[rmscustom]

Still did this on new plugs?

 

[WACT]

Yes. Upon looking at the plugs they seemed on the lean side. Mechanic seemed to be ok with them, maybe little lean on left side. Yellow like color, no brown like im use to with other brand sleds. thanks

 

[jaycampbell]

Mine had similar problems except did not die completely. I was only riding in the 6k range tho, no codes came up so the dealer changed the injectors and it runs awesome again!!

 

[flatland2UP]

Yes. Upon looking at the plugs they seemed on the lean side. Mechanic seemed to be ok with them, maybe little lean on left side. Yellow like color, no brown like im use to with other brand sleds. thanks

Check for excessive throttle lever/cable clearance, or frozen up throttle lever safety switch...

Check fuel pressure, Purchase a fuel pressure gage, then when sled is acting up check fuel pressure.

A friend said his Polaris dealer had 2 out of 8 2014 Polaris 800 Pro R's had fuel pumps fail...His Polaris dealer friend told him that Polaris is aware of fuel pump issues but will not make a recall... I say "BS", but my friend is a good friend of his Polaris dealer that often rides with their group...????

I have heard of only one fuel pump fail last year, but know of 4 plugged fuel filters & dirty pick up socks.. Last year a friend had his 2012 800 Pro R lean out, DET due to a failed fuel pump.... Good Luck on repairs...

 

[Bturton]

Tether?
Try unplugging it.


Turts, typing on Tapatalk

 

[rrjames]

Tether?
Try unplugging it.


Turts, typing on Tapatalk

I was going to say the same. My roommate had an issue with his tether that manifested like this. Anything over a putter (ie anything jostling the tether) and the sled would start cutting out.

That said that does not explain your happy early mileage, with age my tether just stopped working correctly.

Please let us know what you find out!

 

[stormrider3]

You may what to clean the fuel sock (fuel pick-up in tank) sometimes the factory doesn't get the tank as clean as they should on a new sled. Dealer should cover it under warranty.

 

[Calvin42]

Had similar issue. Put isopropyl in the tank and problem went away.

 

[cateye5312]

Did you CHANGE those plugs or just look at them? My issue wasn't near as bad as yours (at 307 miles btw) but it started cutting out if you jumped on it hard. Dealer did the whole computer check thing, no adjustments to TPS or anything, plugs looked ok to me. Mechanic called BS on that, swapped the plugs and stumble went away. That was the only change we made.

I heard SLP is now selling a plug wire set for $35. I didn't swap mine yet but if it continues to partially foul the plugs I probably will. That's what the mechanic is recommending.

 

[sledless bdh]

X2 on the plugs. Cheap and quick and they seem to mess stuff up even when they "look" ok. If that doesnt clear it up then your only out $6.

 

[friscospices.com]

I would say answer is here already

If you have a factory tether it may be just not setting in place correctly. I had to put a little piece of zip tie cut off and place it on the switch to make the switch push harder.

Isopropl, you may have some wet gas and after it goes for a while it freezes up and wont allow fuel to flow.

Doubtful on the fuel sock but worth a try, problem is when you pull it out the "dirt" or waht ever could be there probably wont come up with the fuel delivery assembly in the tank. Dealer can check fuel pump.

 

[WACT]

Thanks for all the good input and some quick answers to some it.

Sled always garaged, I run through fuel pretty fast and its garaged too, run only non ethanol with touch of iso. Changed the plugs between ride/days with new ones. Don't run tether, key. Fuel was tested and was good. It would have shown water if it existed in the non ethanol.
Compression good.

So far no firm confirmation on problem, but initial indications is it might be the injectors. Mechanic talked to Polaris and they are supposedly having problems with the '14 injectors. Polaris changed them from the 2013's (didn't do enough testing I guess) for some reason. My dealer has a couple other sleds starting to behave the same way. Mechanic is talking with Polaris to resolve, but they don't have a solution/fix for the apparent faulty injectors, if that's it. I'll keep you informed. Thanks again.

 

[AKtoad]

Wish I could help but I only have 100ish miles on my 14 and the season looks to be over here in Alaska. Yep dirt bikes are out of storage in Febuary. Seems like bad fuel issue to me.

 

[savagecanuck]

I had similar issues at about 290 miles sled bogged bad struggled to go from 4500 to 6500 rpm.Lasted about a minute,felt like fuel starvation. I dropped it off for first service and dealer could not find any codes,checked tps .They think moisture, but I doubt any issues with my fuel as I use non ethanol shell gold from a busy station.The injectors would be something to keep my eye on.I did go on another ride of 59 miles and not a hiccup.

 

[WACT]

Still having Problems. No one seems to know what's up or down.

What do you think of the following.

What do you think of the condition of cylinders and walls. These are at 430 miles on 2014?

Engine still was cutting out after Polaris told dealer to replace the injectors on 2/6/14. Got the sled back on 2/11/14 and problem reappeared three days later the 14th. Its been in the dealer shop since 14th, On the 19th Polaris read dealer tech notes closer and noticed 107 compression. Told dealer to take it apart and look. Its been down 15 day so far this month and I expect into next week or more.

What do you think I should expect at this point from Polaris and dealer?

I'm over this, its been the most ridiculous experience, especially that this my first Polaris since the 900's and I didn't experience any issues relatively similar to this nor the amount of delays when making repairs with the three doos I had between owning Polaris's.

What luck!!


On a side note, I think its the computer and why we are down this rode I'm not sure! There's a lot more smarter sled heads out there then me, so I appreciate your opinion.

 

[jakey-boy]

Make sure they have checked your reeds. The symptoms don't sound right but my dealer told me they have seen a handful of 14s with reed issues. Mine were both shot at 1000 miles (stock sled).

I doubt this will cure your issue but I wanted to throw it on this thread in case others with 14s are looking on here answers to their bogging issues.

 

[OuraySledder]

All stock oil settings? Just looks like a lot of carbon build up on the pistons...

Obviously it is a warranty issue so, you wont get the right fix. I would be surprised if they didn't at least do the top end. Does anyone know what the low end tolerance is for compression? I wouldn't be surprised to see then drop in a new motor. Hopefully it doesn't take them too much longer.

If my compression was that low, I would be buying a set of non polaris pistons, chamfering the ports in the cylinders and button it back up.

I am not sure that fixes the bog though. Mine had a couple bogs last Sat. Freaked me out to read this thread. Fortunately mine was just because the throttle cable was out of adjustment. Sundays ride went off perfectly.

 

[WACT]

Yes, oil setting at stock. We thought the same on the carbon build up. Initially thought the plugs looked normal to lean, but obviously runs rich.

Polaris came back tonight with the following;

Dealetr to inspect piston to cylinder clearance and rebuild engine.
Dealer to test with an ECU and inspect Stator assembly resistance.

I'm not sure how I feel about all this. I feel the pictures are of a motor with 1500 miles not 400, but I'm not an expert. There are vertical scores the finger nail can fell on cylinder walls, cylinder wall coating thinning at port, vertical marks on pistons, heavy carbon build up.

I'm no mechanic and would GREATLY APPRECIATE some mechanic's opinions, cause not sure if I should accept there fix (beside upgrading pistons and rings) and move on with warranty or push for new top end and/or more?

Also, dealer already tested ECT and Stator assembly, so the original problem is still not resolved or fixed when (or if) put back together.

Thaks,

 

[rubbersidedown]

I have 14 pro and it started doing the same thing around 300 miles. No code, just started periodically cutting out. I took it to the dealer and they checked through reeds, injectors, tps, ecu, and compression everything looked good. Came to the conclusion that it was my factory tether coming loose. Rode it last weekend and did not have the issue.


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