Starting snowmobile engine in gocart

[farm boy00]

Dude, just set the plug next to a bolt or something and pull it over. If it has spark you will see it. You don't need a tester. Those engines are famous for crank seals going bad. You can pull and pull, have spark and gas , but it still won't start........

Never dealt with a crank seal but I know about the plug trick. Got to do it today. Only thing is that a tester is nice cause it hoods inline with the cords

 

[Cord]

Seals or boots at the base of the carb can crack over time leaning the engine out. This will result in a lean mixture burning the engine down. Once you have it running, a quick way to check for vacuum leaks to take a unlit propane torch and wave it around the suspect area. The engine will pull the gas in and then speed up. It being a fan simplified the cooling system, but that engine is intended to be cooled with 30 degree air. Not sure how well it will cool when it's 70 or hotter out.

As for your starting problem, I'd first check for spark and then tear the carb down and rebuild it. The ethanol is **** on these engines and I'm having to rebuild our carbs every year.

 

[dadster4]

Fresh gas/oil mix, no ethanol, Gumout that carb! Make the mixture rich to start, then lean it out until she runs smooth but not hot.

 

[farm boy00]

Seals or boots at the base of the carb can crack over time leaning the engine out. This will result in a lean mixture burning the engine down. Once you have it running, a quick way to check for vacuum leaks to take a unlit propane torch and wave it around the suspect area. The engine will pull the gas in and then speed up. It being a fan simplified the cooling system, but that engine is intended to be cooled with 30 degree air. Not sure how well it will cool when it's 70 or hotter out.

As for your starting problem, I'd first check for spark and then tear the carb down and rebuild it. The ethanol is **** on these engines and I'm having to rebuild our carbs every year.

Ok thanks

 

[farm boy00]

Fresh gas/oil mix, no ethanol, Gumout that carb! Make the mixture rich to start, then lean it out until she runs smooth but not hot.

Yup got the gas mixed rich. Have to unbolt the carb and going to soak it in gas since I don't have carb cleaner currently. I unbolted it once before and sprayed starting fluid into it a bunch and it removed some gunk

 

[5030]

Actually, a fan cooled sled motor should be ok with cold plugs. Looks like an old 500 fan. I bet the crank seals are shot.

 

[farm boy00]

This was the bottom part of the carb where the fuel filtration system was. Yea I don't think what's how it's supposed to look like. Put it back together and now it's leaking in one of the seals is leaking and it still won't start. So what's the crankshaft seal?? Is it a easy or hard replacement and cheap or expensive??

 

[Clint S]

That's not a filter system is the fluel pump which is part of carb. There are rebuild kits available. Probably a tillotsen HD. The center seal goes bad and will not allow the base to pressurize correctly pull gas in and push exhaust out. You need to take EVERYTHING apart and split the bottom case and get the crank out. There is a two piece seal, but it is better to have the crank split and use a one piece. By the sounds of it your in over your head on this 2 stroke. Rebuild the carb first and go from there what you have shown in the pics is all the reason it needs not to start. Most folks switch out to a Mikuni round slide on those.
Probably a 340

 

[5030]

That's not a filter system is the fluel pump which is part of carb. There are rebuild kits available. Probably a tillotsen HD. The center seal goes bad and will not allow the base to pressurize correctly pull gas in and push exhaust out. You need to take EVERYTHING apart and split the bottom case and get the crank out. There is a two piece seal, but it is better to have the crank split and use a one piece. By the sounds of it your in over your head on this 2 stroke. Rebuild the carb first and go from there what you have shown in the pics is all the reason it needs not to start. Most folks switch out to a Mikuni round slide on those.
Probably a 340

You are probably right. I imagine it's a Suzuki. Better off getting a new carb on Flea-bay. That one is shot.

 

[farm boy00]

Well I'm not rebuilding it. I'm trying to get him to. This was supposed to be in running condition which was solely parked half way through the winter cause he was too busy for it and only needed gas lines.