Melted piston - Snowmobile Forum: Your #1 Snowmobile Forum
http://www.snowmobileforum.com
Go Back   Snowmobile Forum: Your #1 Snowmobile Forum > Specific Snowmobile Forums > Polaris Snowmobiles


» Sponsors





Reply
 
LinkBack Thread Tools Display Modes
Old 01-06-2013, 07:59 PM   #1 (permalink)
Registered User
 
Join Date: Dec 2011
Posts: 11
Melted piston

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.
windfarm is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-06-2013, 10:59 PM   #2 (permalink)
Registered User
 
Join Date: Jan 2013
Location: Ma
Posts: 5
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
dpendzic is offline   Reply With Quote
Old 01-07-2013, 07:58 AM   #3 (permalink)
Registered User
 
Join Date: Dec 2011
Posts: 61
Engine Code check, Came up bad Fuel?
danskool is offline   Reply With Quote
Old 01-07-2013, 08:59 AM   #4 (permalink)
Registered User
 
Join Date: Jan 2013
Location: Ma
Posts: 5
exactly--old gas= low octane=preignition=burnt piston
dpendzic is offline   Reply With Quote
Old 01-07-2013, 12:41 PM   #5 (permalink)
Registered User
 
Join Date: Dec 2011
Posts: 11
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
windfarm is offline   Reply With Quote
Old 01-07-2013, 10:56 PM   #6 (permalink)
Registered User
 
Join Date: Nov 2012
Location: Hayward, WI
Posts: 21
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?

Sent from my Desire HD using Snowmobile.com App
polaristech is offline   Reply With Quote
Old 01-07-2013, 11:08 PM   #7 (permalink)
Registered User
 
Join Date: Nov 2012
Location: Hayward, WI
Posts: 21
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.

Sent from my Desire HD using Snowmobile.com App
polaristech is offline   Reply With Quote
Old 01-08-2013, 12:25 AM   #8 (permalink)
Registered User
 
Join Date: Dec 2011
Posts: 11
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
windfarm is offline   Reply With Quote
Old 01-09-2013, 08:47 PM   #9 (permalink)
Registered User
 
Join Date: Nov 2012
Location: Hayward, WI
Posts: 21
Wires are pink and black/ blue

Sent from my Desire HD using Snowmobile.com App
polaristech is offline   Reply With Quote
Old 01-19-2013, 11:40 AM   #10 (permalink)
Registered User
 
Join Date: Dec 2011
Posts: 11
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.
windfarm is offline   Reply With Quote
Old 01-19-2013, 12:36 PM   #11 (permalink)
Super Moderator
 
BC_Dan's Avatar
 
Join Date: Jan 2004
Location: oregon
Posts: 12,512
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", 95 Prowler 550 2-up, Really OLD AC Cheetah

http://www.avalanche.org/accidents.php
BC_Dan is offline   Reply With Quote
Old 01-19-2013, 07:44 PM   #12 (permalink)
Registered User
 
Join Date: Dec 2011
Posts: 61
My first thought, Where is the filter, It left you hanging!.
danskool is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 04:34 PM.



Copyright SnowmobileForum.com

Search Engine Friendly URLs by vBSEO 3.6.0