Adjusting the oiler up cause DET?

[Randman]

Multiple times my 2013 PRO has triggered the DET/Limp mode after riding hard while using it in the Non-Eth setting. (I am running 92 Non-Eth Fuel.) I am Not adding extra oil in the fuel tank.

I have my oil pump 4 turns in from the stock setting and that comes out to around a 37/40-1 ratio.

I am pulling 8200-8250 RPM and ride 4-6,000', But the sled usually does not DET until lower RPM (5-6k RPM) while going to the next play area.

Is the added oil causing the DET? The sled runs fine after it DET's & I switch to the Eth setting...???

If I switch back to Non-Eth and do a few pulls it goes back into DET/Limp

Also, my buddies 2012 PRO 800 using the same fuel from my gas jug is not having any issues and he is running RKT pistons and higher compression head. (He has Not adjusted his oiler)


Thanks for any help.

 

[TBird]

I am in no way a Polaris guru, but it sounds pretty obvious, with more oil compression rise = closer to DET.
Ethanol plug in = more fuel = cooler combustion = less risk to DET.
How much rpm do you pull?
If you want as much HP as possible, run non ethanol plug and add a splash of 100ll, else run with the ethanol plug.


Using Tapatalk on Android ICS pad.

 

[rotax]

I'm wondering if I'm running into this issue as well.

I ran non-eth until I lost the engine and had the oiler turned up.
Since then I've gone back to the eth resistor due to some 'cut-outs' at WOT on long hard pulls. I can only assume the cut-out is DET related, but I don't see any warning lights or info on the gauge.
Using the eth resistor I get no weird cut-outs, ever.
I just recently went back to the non-eth last ride (because I forgot why I wasn't using it)...and my cut outs returned, and it usually happens at the worst times, pulling lines through trees on a hill with no place to turn out...

I've been running Chevron 91 WITH eth.
And usually put an oz of Marine formula STA-BIL in each tank (I forgot to the last ride)..

I hate random finickiness, so I'll probably go back to the eth resistor and deal w/ the loss of response/RPM/HP.. Just so it runs consistently. Consistency is more important to me.

 

[likkerpig]

Option B is that even though the pump said 92 actual octane may be lower. Could be old gas or something like that too. Cannot speak to whether or not it's increased oil.

 

[Randman]

I will back the oiler off a turn or two and see if this resolves the issue.

Thanks for the replies!

 

[winter brew]

Have seen exhaust springs resonating trigger det sensor.....might silicone the springs just to eliminate the possibility of a false alarm.

 

[mountainhorse]

I've seen too many of these sleds run with oiler turned up AND added oil to the gas... no with no issues... including 12 and 13 models.

Sounds like something else to me... WinterBrew has a good recommendation...

Also...What is your complete setup... is the sled completly stock including the can?

Have you tried other gas sources as likkerpig suggested?

Is the pipe or any other engine mounted item touching on chassis parts?



.

 

[Randman]

MH, The sled has 305 miles & is stock other than:

1. I removed the Exhaust Valve Solenoid hose where it attaches to the EV & plugged tips. (Stock EV Spring) This has helped my previous 11 & 12 sleds midrange power.

2. I am running an SLP Blue/Pink primary spring.

3. Turned up the oiler & I siliconed all of the exhaust springs.

 

[winter brew]

Might hook that back up....if it's opening later and holding heat in the cylinder it is more prone to deto.

 

[wellfed777]

also watch that sneaky mid range over rev
you won't see it on the gauge you could try adding a little wieght in the primary
good luck

 

[Sxrlar]

I have had no issues with DET on mine, and I have my pump turned up, and I still add oil to the gas.

 

[Dootimes2]

I'm wondering if I'm running into this issue as well.

I ran non-eth until I lost the engine and had the oiler turned up.
Since then I've gone back to the eth resistor due to some 'cut-outs' at WOT on long hard pulls. I can only assume the cut-out is DET related, but I don't see any warning lights or info on the gauge.
Using the eth resistor I get no weird cut-outs, ever.
I just recently went back to the non-eth last ride (because I forgot why I wasn't using it)...and my cut outs returned, and it usually happens at the worst times, pulling lines through trees on a hill with no place to turn out...

I've been running Chevron 91 WITH eth.
And usually put an oz of Marine formula STA-BIL in each tank (I forgot to the last ride)..

I hate random finickiness, so I'll probably go back to the eth resistor and deal w/ the loss of response/RPM/HP.. Just so it runs consistently. Consistency is more important to me.

Could that be because you ran in the non-eth setting with Chevron 91 with eth. Kind of makes sense that det occured.

 

[dannemartin]

I also plugged the Exhaust Valve last year, and was hitting det in the midrange..put it back to stock and sled run just fine. if you plugg the valve you must increase fuel in midrange.

 

[just-pinch-it]

Hook the VES hoses back up.

 

[907assault]

IMHO, the hose is there for a reason. Just re-route it.

 

[mountainhorse]

Yea.. unplugging the VES hose is kind of big detail to leave out.

I agree with those above... put the VES back to stock... and run the Ethanol setting in the right position for the fuel you are running.

Try running without the Stabil if you are still having det issues.

 

[Randman]

I backed the oiler down two turns from the four I had it set at and it still would DET after some hard pulls. You guys were right, the added oil is not the issue.

I have now reinstalled the EV hose and removed the plugs and will try this tomorrow. (trying one thing at a time so I know what fixes the issue)

Thanks for the help.

 

[Zrider]

I backed the oiler down two turns from the four I had it set at and it still would DET after some hard pulls. You guys were right, the added oil is not the issue.

I have now reinstalled the EV hose and removed the plugs and will try this tomorrow. (trying one thing at a time so I know what fixes the issue)

Thanks for the help.

Please let us know what you find out. My '13 RMK was hitting DET the first ride out. No problems the next 5 rides, then today, it started hitting DET on the way back to the truck. Oil pump turned up and adding 1 oz/gal of fuel. Maybe a case of too much oil which can cause a lean condition. Will add 3-4 gals. of straight 91 for the next ride and see what happens.

 

[wellfed777]

Z
i'll bet your over reving on the way back to the truck something about the drop in elevation and low load on trail and they over rev and DET
i pulled a little weight out of my weights to play with cluching and my pro
it det once on the way in (trail) and then climbed all day no worries then headed back to truck and and if i was not carefull it would det super easy
they do it in the mid throttle and you don't see it over rev on the gauge

before i removed the weight same trail no problems

 

[Zrider]

wf:

On my first ride, it hit Det after I hit high R's on the trail, so it was probably hitting the rev limiter. Yesterday, it hit Det when I was going across a meadow at 6000 rpm. Really surprised me. Checked the code read-out(neat feature) and it showed 1352 & 0 which is Max Det Correction Limit Reached for Knock Level Cylinder 1(MAG). Got back on the trail and grabbed a handfull and it did it again. Code read-out read 1353 & 0 which is the Knock Level Cylinder 2(PTO). Did it one more time(high R's) and then I took it easy back to the truck.

I'm still thinking I may have too much oil(1 oz/gal of fuel) in the tank. On the first ride, the dealer had added a qt. of Poo blue to the gas tank with 3 gals of gas. I did not fill up the tank, so I was running a pretty rich pre-mix. Ran OK for 10 miles, then starting hitting DET when I gave the flipper a good hit. Put 30 miles on it that day. Next ride, I put straight 91 in the tank(no added oil) and it ran perfect. At 100 miles, I cranked up the oil pump and have been adding 1 oz/ gal to the gas. 3 rides with that combo, no problems. Then yesterday, DET shows up again.

Going to add straight 91 again and see what happens Wed. or Thurs. If it clears up, then I just might start adding 1/2 oz/ gal. BTW, my pump ratio is now at approx. 40-1. Beats the hell out of the 75-1 before the adjustment.

I'll keep an eye on the R's and the clutching. I've always runs 62's around here and never had a problem. My '11 Pro ran flawless with 62's, but it was a 163 compared to the 155 on my '13. Thanks for your advice. We'll see what happens on the next go-round