2014 engine problems?

[rubbersidedown]

It doesn't explain the carbon build up but have you checked the kill switch for a short? Just thinking off of what mine was doing and how it could be related. Might want to disconnect it and see if it does the same thing.


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[WACT]

No, the kill switch has not been tested for short, but good idea and will check into that.
Thanks!

 

[OuraySledder]

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,

Rebuilding the top end is what they have offered to do according to what you posted. They will have to re-nik the cylinders and have them bored/finished to fit the new pistons. Personally I wouldn't want another set of JUNK Polaris pistons because they are going to do the same thing. However, the fix is free. If they are doing the assmebly, what is your comfort level with asking them to do a light chamfer on the port openings. Those rough edges are what kills your rings and compression. I have heard of guys talking dealers into usning better pistons as well. Just depends on the dealer.

Much of the excess carbon is due to the direct injection. It is an issue on newer cars with direct injection as well. I was trying to figure out why there were no wash marks but I think the injection system is the reason there as well.

The good news is, unlike the Polaris warranties of just a few years ago, they seem to be willing to pay for the fix without much hassle. The bad part is the 2-3-4 more weeks of waiting for them to get parts and get it done.

You other problem is a mystery to me. Good Luck

 

[WACT]

Thanks OuraySledder! I don't think I spoke clearly, and unfortunately Polaris isn't going to replace any parts, they said to just put the engine back together. Is it ok to just put back together without any prep? Frustrated they currently aren't willing to do more.
If I have to Im looking at putting in Bikemans durability kit (longer piston, etc 500.00). Do you have any other product suggestions?

 

[nuggetau]

Thanks OuraySledder! I don't think I spoke clearly, and unfortunately Polaris isn't going to replace any parts, they said to just put the engine back together. Is it ok to just put back together without any prep? Frustrated they currently aren't willing to do more.
If I have to Im looking at putting in Bikemans durability kit (longer piston, etc 500.00). Do you have any other product suggestions?

What? They are just going to put it back together with 107 compression? I would not allow that, no way!

 

[OuraySledder]

What? They are just going to put it back together with 107 compression? I would not allow that, no way!

X2...


Low compression and cylinder wear at 400 miles... jeez, where is the facepalm emoticon?

I guess you have a couple choices.

One, you can let them put it back together with the full confidence that the engine will fail before the seasons end. Then they will have to replace the whole thing under warranty.

Two, you get the motor fixed yourself but you STILL have the cut out issue. So much for Polaris doing the right thing, You are missing riding after buying a NEW sled.

The problem I see with doing the top end your way, correctly, is that, if the bog problem isn't fixed and it is something like injectors or fuel pump or even ignition you could burn down a fresh rebuild that was done on your dime.

At this point I might allow them to try their way, ride the snot out of it and let them buy you a new motor for next season. At 107 compression, it isn't far from gone. What do the rings look like? I would guess flaked and damaged if the compression is low. Ruins your season but forces them to own their crap engine problem and mismanaged warranty solutions. Makes you look hard at another Doo.

I better not mention how well my 13 is running right now.... I want to be one of the lucky ones.

 

[Danny Dangles]

Much of the excess carbon is due to the direct injection. It is an issue on newer cars with direct injection as well. I was trying to figure out why there were no wash marks but I think the injection system is the reason there as well.

Guess I shoulda bought a 14' and got the direct injection...Sorry... But anyhow I am surprised at how poorly Polaris and your dealer are responding to this issue, a good dealer will back you up with a legitimate warranty issue, such as this.

 

[snowmobiler]

think my weedeater has 107.i dont know,maybe thats normal for a poo.

 

[Rmk_RDR]

Did you find a problem?

 

[Err]

I went through an epic battle with Polaris a few seasons ago with a gremlin like this. If you search under my ID, you'll find the thread. My root cause ended up being the tps wire and and another wire both had bare spots on them in the main wiring harness. My ECU was logging TPS errors and, I think, TSS errors. Basically I got stuck in a position where Polaris was unable to determine the root cause through their diagnostic equipment so they just refused to do anything. It was a mess. Anyway, we eventually were able to replace the TPS, TSS, injectors, check out the plug wires and most peripheral wiring, and eventually dug into the main wiring harness and found the buried issue.