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Ace turns over but won't start

43836 Views 43 Replies 17 Participants Last post by  Ace325
What up guys yesterday i took it out a rode all day so today we came somewhere too and just kept everything loaded up but when I went to unload all it will do is turn over like it isn't getting fire. Anyone had this problem before? All fuses behind the seat are good the ones you can check by looking anyways
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Check the easy stuff first ie does it have fuel. Not to be obvious but I have been out of fuel plenty of times and cranked and cranked only to feel real dumb that I was out or the fuel shut off. Won't start without gas.
When you turn the key on, do you hear the whine of the fuel pump?

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Mine died in the middle of the road hours after I got it. Loose spark plug wire.

Matt B
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Mine died in the middle of the road hours after I got it. Loose spark plug wire.

Matt B
Had that same thing happen to me with one of my other machines. The spark plug boot fell apart I had to duck tape the wire to the plug just to get it back to camp.
I have checked all the above and everything is as it should be, pump comes on, I can smell gas coming out the exhaust and I had just filled it up lol plug wire is good, does anyone know if there is a special tool for the plug? It's a tiny hole and I can't even touch the plug with a finger lol it's way down in there! I can say this, I'll never buy another Polaris, I called the dealer and they said I have to pay 150 to get them to just check it to see if what ever the problem is would be covered under warranty.. My reply was wtf kind of scam is this? It's less than 2 months old with 200 miles on it.. Polaris said the same thing when I called them. I'm over it!!
Millions of happy Polaris customers disagree with your decision. Every brand has some issues, and every forum regarding every brand has users saying "I had an issue so I'll never buy this brand again".
Sounds like you got a bad dealer. I am sure mine would have been falling over themselves to look at the vehicle in this situation. Is there another one nearby you can take it to?

Check over this thread for some more troubleshooting you can do: http://www.aceforums.net/forum/9-ace-talk/529-starting-funny.html
The special tool is in the tool kit, at least on my 570 it is. I had to maneuver it around to get it in the right spot to drop down in the hole but once you learn where the sweet spot is it works great just like it is made especially for the Ace.
Try changing the spark plug, tool is in the factory tool kit.
Have you checked the battery. The factory battery is worthless and if it's a drop low on juice the thing will crank but not start. Sounds like your dealer is worthless too.
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If you can not the spark plug out get a spare plug and connected to the spark plug wire and grd the plug and turn the engine over to see if you got any spark. With smell of gas you have flooded the engine. I am thinking you have a bad spark plug
I got the plug out now and it was sparking but I put a ngk plug back in it but still no firing, Im wondering if the plug wire might be keeping it from connecting to the plug when it's in? I'm lost when it's a new sparking plug and the exhaust smelling like gas!
I can feel it popping onto the plug now but still no fire, also tried starting fluid because why not!
Take the airbox lid off and remove the filter and try it again.
If it still won't fire, it's time for a compression test.
What do these things have for timing controls? Crank sensor, cam sensor? Check the wiring over very close to make sure nothing wore through or melted.
My bet is that the cylinder is washed down from cranking and no spark. I would pull the spark plug again and check to see if it is fuel fouled again. If it is, I would use the starting fluid to clean/dry the spark plug. Disconnect the coil and crank it over with the spark plug out. You do not want a spark available with the possibility of liquid fuel coming out of the spark plug hole. If you find any signs of liquid fuel coming out if the spark plug hole it has probably washed down the cylinder walls and now the rings are having a hard time sealing. Check the oil level and make sure that oil doesn't smell like gas. When liquid fuel is in the cylinder and washes the oil from the cylinder walls. It can now run down past the rings and over fill the oil in the crankcase. You will need to change the oil before you run the engine. Add about a teaspoon of oil in thru the spark plug hole and crank it over a little bit before you put the spark plug back in. I hope this helps. Good Luck!
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I threw my timing light on it and if is working right I have very spastic ignition fire! But if that's the case it seems like it would at least backfire or something, it hasn't fired once since it started.
My bet is that the cylinder is washed down from cranking and no spark. I would pull the spark plug again and check to see if it is fuel fouled again. If it is, I would use the starting fluid to clean/dry the spark plug. Disconnect the coil and crank it over with the spark plug out. You do not want a spark available with the possibility of liquid fuel coming out of the spark plug hole. If you find any signs of liquid fuel coming out if the spark plug hole it has probably washed down the cylinder walls and now the rings are having a hard time sealing. Check the oil level and make sure that oil doesn't smell like gas. When liquid fuel is in the cylinder and washes the oil from the cylinder walls. It can now run down past the rings and over fill the oil in the crankcase. You will need to change the oil before you run the engine. Add about a teaspoon of oil in thru the spark plug hole and crank it over a little bit before you put the spark plug back in. I hope this helps. Good Luck!
Ok thanks for the info I'll give it a try, I haven't checked the oil since I last changed it which hasn't been long but worth a try!
I took the seat out, then the back panel...took the plug out...left it overnight trickle charging the battery, next day new NGK plug...fresh gas...and away it went...no problem since...but I always carry a spare plug now...
man you lucked out haha I have charged the battery, tried a new plug, made sure the wire is actually on the plug, sparking good, sounds normal when cranking but it hasnt fired off once since this started.. still smells strong like gas, also tried starting fluid for the hell of it lol i couldnt find the fuel tank vent though, looks like its just a line that goes into the frame and ends inside one of the rails. im completely lost at this point! im tapping out its time to take her to the dealer and find out for sure whats wrong! ill post on here what they say. thanks for all the input guys it has helped me a lot but not the ace haha
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