Fouling plugs one set after the other

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polaris128

New member
Warming up my 07 Polaris 700 CFI to summerize it yesterday and fouled 4 sets of plugs. Anybody have any ideas what might be going on with it. It would get to 90 degrees and go down on one cylinder, dash lights and head light would go out then sled would die.
 
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G

Guest
It is a sign from God that winter is over. Put it away for the summer. Begin trying to start it again around Nov. 15. When it starts it will be winter again.
 
indy_500

indy_500

Well-known member
too warm, it's made to run a lot colder, it will run very rich when it's warm. it's going ot happen. just like they said winter is over, except for we're expecting snow in my area this weekend! YAHOO!
 
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polaris128

New member
indy_500 said:
too warm, it's made to run a lot colder, it will run very rich when it's warm. it's going ot happen. just like they said winter is over, except for we're expecting snow in my area this weekend! YAHOO!
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It ran fine last year in the UP when it was 60 on the last trip. Not buying that.
 
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russholio

Well-known member
Not saying overheating is the problem, but keep in mind when you're riding trails, even if it's warm out, you're kicking up snow to cool the heat exchangers. Not so much when it's just sitting on a stand.
 
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snocatmike

New member
Most new snowmobiles when some thing goes wrong or senser safety switch whatever the computer goes to full rich so moter dont burn down.
 
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polaris128

New member
Sled is fouling plugs before it gets to operating temp. It also acted up the last time I had it out. Ran fine riding around the farm then I parked it for a few hours. Letting it warm up before I put it away it fouled a set. Changed plugs went for a ride and it was fine.
I think one of the many sensors have failed, but have no idea which one without hooking it up to the computer at the stealership.
I have had this sled for 3 years and 5000 miles. Never acted like this before. I summerize it when its warm out ever year.

I will post when its figured out. Might be a few weeks, dealer is busy with ATV's.
 
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winter_time

New member
indy_500 said:
sled aint' mapped to run that warm
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Indy it wont matter the air temperature that is what the air temp sensor is for an efi will run just fine when it is 60 degrees out side

You can rule out over heating because the sled is running at 90 degrees when it fouls out it. More than likely you have a bad sensor as far as which one i would not know.
 
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G

Guest
If it is not overheating it may well be a sensor somewhere especially if it was not right the last time you rode it. God, in his infinite wisdom, may have struck down a sensor. Wait until after lent to fix it. God is busy with Easter at this time.
 
srt20

srt20

Active member
Are the plugs bad oily? If yes check oil pump arm for sticking, oil pump is under the throttle bodies. If not, and your sure the lights go out before the engine dies, get the stator checked out.
 
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