Install the app
How to install the app on iOS

Follow along with the video below to see how to install our site as a web app on your home screen.

Note: This feature may not be available in some browsers.

  • Don't miss out on all the fun! Register on our forums to post and have added features! Membership levels include a FREE membership tier.

sled just quit...

took off this morning on my 02 edge x 600 across a long wide open field and got into it pretty good as far as throttle goes.. was clipping along around 80-85mph all of a sudden it felt like someone reached over and turned my key off or hit the kill switch on me... i came to a stop and was fearing the worst but with one pull it fired right back up.. checked the plugs.. nice brown color and no evidence of "slag" from a melted piston... anybody have an idea what i might of had happen?:face-icon-small-con
 
Did you let the sled warm up first? Maybe a cold siezure? My guess is you probably siezed a piston for some reason, a lot of times they will start up again. Most of the time you dont burn a hole in your piston, the side of the piston hits the cylinder wall. This happened to me when my oil cable broke and motor was not getting oil. You should pull your head and check your cylinder walls. Sometimes if its a light siezure and didn't score your wall too bad you can clean up the aluminum with muractic acid. The esiest way to remove aluminum from the wall of a nikasil plated cylinder is with muriatic acid. Be very careful! The acid eats aluminum very quickly! You must be very cautious when using it near cylinder ports...it can eat the aluminum at the edges of the ports. It can also eat aluminum through any nicks or holes in the plating. use a cotton tipped swap to apply the acid precisely where you want it on the nikasil liner. If it causes bubbles, then it is eating aluminum from the surface of the nikasil. Leave it on for about 20 seconds and then wipe off thouroughly. Repeat the process two or three times to be sure you have removed all of the aluminum from the plated cylinder wall. Then rinse the cylinder very thouroughly with water to make sure there is no remaining acid. Then drench the cylinder in WD-40. Then a little work with a scotchbrite pad. Then a final cleaning and ... viola! Ready for assembly, good as new. Depending on how bad it is you may want to stick new pistons in there.

If it scored the wall pretty deep you will need to replate cylinder.

Find out why you siezed, too lean?, no oil?, overheat?, detonation? Cold Seizure?

Could also be electrical prob but usually electrical problems dont just restart.
 
Last edited:
sled had been running for over 25mins before this happend. i also religously let my sled run for 5mins before i even move it :) when the sled quit it was still turning over and u could here it turning over very clear so i dont believe it seized i am running 400 main jets it was 18 degress this am here..btw the 400s have been in the sled alllll season and the plugs are a medium brown color
also the sled runs great and acts no different even after this happend
 
Last edited:
It wouldn't hurt to pull the y pipe and have a peak at the pistons. On another note how is the fuel filter? Have you changed it recently. Maybe it just plain ran out of gas in the float bowls due to your sustained high rpm. Once it stopped there would have been some gravity feed fuel flow through the fuel pump and into the float bowls.
 
as far as the filter goes... im am praying it was just that..i bought the sled from the 1st owner and i called him and asked if he had changed it.. he said he didnt know it had one.... thankfully i have monday off so i am going to the dealer then. gonna get a top end gasket set and fuel filter.. fig i might as well inspect everything before we head out on a 4day trip(tuesday) thats has been planned...of course this sort of thing always happens before a trip.... better it happening around home than out on the trail:face-icon-small-coo
 
i forgot to mention that when i took it for a spin around the yard around 8hrs after the sled had this happen..it seemed like it wasnt running very clear..i actually put the choke to half and it ran significantly better but this was only at low rpms also i would have to take the choke back off after about 5seconds..... the only thing i have done to the sled which should of helped was cleaned out my FILTHY oil coated airbox and sprayed the carbs as well
 
so i got out of work this morning at 7am damn midnight shift.... ran to walmart who actually had the good ethanol treatment starbrite startron
i will swear by this stuff!!!!!! i took a small ride around my yard this morning after adding it and by the time i got to pull it up on my trailer it wasnt hesitating and popping at idle it was smooth and crisp... heading out to my buddies shop after my nap and we are going to run a compression test as well as pull the y pipe off and take a look at what we can see of the piston and cylinder.
 
I install small Racor filters on mine, this will trap any water and debris and prevent the carbs from getting crap in them.
 
sled did it again!!!!!! long story short... bought the sled.. was told it was stock... went to put 400s in it for jets... when i opened the carbs...there were already 400s in there.. dealer says 430s are stock... so i ended up cleaning carbs and buttoning em back up...after that.. was the 1st incident in which i created this post about... now yesterday it happend again but no pop this time.....it feels like someone turns my key off on me... sled DID sieze this time... let it cool,poured some oil in the cylinders, grabbed the clutch since pull cord was tight.. and turned it free.... rode it back to truck the entire 90 miles ( i added a quart of oil to fuel after this) she smoked like a banshee..:face-icon-small-ton sled runs great and still has 100psi per cylinder..yes low... but even... i cant blame the 400s since i had no probs until i cleaned my carbs... and i didnt even "clean" them.. i just took the bowls off and sprayed em down with carb cleaner cuz they looked good to begin with... all my oil lines are hooked up and cable and markings are good... just frustrated:face-icon-small-fro
 
well i pulled the head and cylinders off tonight... decent scuffing on pto side(both sides of the piston) thinking my crank seal went.. unfortunately i didnt run it and spray carb cleaner at the seal before i tore her down... ordering parts in the am anyone have a piston brand reccomendation?
 
Premium Features



Back
Top