windfarm

I was wondering if anyone here heard of a wire that you either plug in or unplug depending on what kind of gas octane level you use. had my sled at the dealer for a engine code check and it came up bad fuel so he unplugged this wire and told me to plug it in if i use 91 octane so i brought it home ran it for about a mile and blew a piston. Now i wonder if you leave it plugged in would it hurt the engine with lower octane. Machine is a 09 dragon 800 with all the updates done and a power commander installed.

dpendzic

my 04 Polaris has a position on the ignition switch for 91 octane. the manual says it advances the ignition timing. you probably had preignition and burnt the piston

danskool

Engine Code check, Came up bad Fuel?

dpendzic

exactly--old gas= low octane=preignition=burnt piston

windfarm

I was on a trip in the northern part of the province when the engine light came on and was buying gas at pumps same octane level as what i was using on farm. I put on about 300 miles on trip and anther 50around the farm all the while running with the wire plugged in for high octane so wondering if that started to damage the engine

polaristech

If u leave the wires plugged in I would run 91 non ethanol (non-oxygenated). If u have any doubt of fuel quality or unsure of octane keep the wires disconnected. Try to buy fuel from places that get a lot of business that way u are always getting fresh fuel. They might say they have higher octane fuel but how long has it been sitting in their tanks?

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polaristech

If u take off the left side panel the wires are right along the console panel coming down the rightside of the clutches. Two bullet connector wires, one male one female side by side. I know one wire is pink/ black and think the other is black. If not it is the only wire right next to the pink/black that plugs in to it. Plug in for 91 no ethanol, unplugged for anything less quality.

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windfarm

Thanks polaristech i will leave it unplugged and find out from my bulk fuel dealer what the farm gas has for a octane level i think it is around 87

polaristech

Wires are pink and black/ blue

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windfarm

This is what happened the top end injector on the piston was stuck closed which leaned out the piston at high rpms the mechanic figuered i got a tank full of dirty fuel which clogged up the injector. I thought i would let everyone know the cause should get it running next week.

BC_Dan

Thanks for the heads up. You would think that spendy fuel filter would prevent that from happening. Guess not, huh.

__________________
2007 Dragon RMK 700 155", 2008 RMK 600 155", 2006 RMK 600 144", 95 Prowler 550 2-up, 1990 Indy 650, Really OLD AC Cheetah

http://www.avalanche.org/accidents.php

danskool

My first thought, Where is the filter, It left you hanging!.