Gy6 Wont Start Plz Help

[littlemaximas]

i have a new star or sun star go kart i just bought its a 2006 model gy6 motor 150cc (china kind) it has not ran in like 2 years i put a new carb. on it new spark plug new gas new oil new air filter wont not start turns over good. its getin gas and air and spark is good it will back fire alittle like once or twice but its sounds like it has no gas in it wont hit a lick or nuttin i changed the coil still nuttin i put gas in the spark plug hole and tried it nuttin happen. i was thankn maybe its the timing or sumthang. if ne one knows what the problem is plz let me no. i dont no what else to try.

[kliff]

Still severral variables I can think of that plague us, with GY6 scooters, that you might check.
Replace all fuel and vacume lines, don't check 'em, just replace 'em.

Does your fuel system have either a vacume petcock or fuel pump, replace either or both if so equipped.

Do you have a removeable fuel strainer from the bottom of the fuel tank, pull & clean.

Right off the bat, those are common parts our scoots have with your buggy, which have proven troublesome after extened lay-ups.
Hope it helps.

[Offroadkarter]

first off, type better english



check the spark, pull the plug out of the motor, plug it into the coil wire and ground it on bare metal and have someone crank the key. If you see spark thats obviously working.

If it was sitting for 2 years with gas in this "new carb" its probably clogged, I had this issue and i had to pull mine apart and clean it out, after that it worked fine. Make sure you dont have the lines mixed up and gas is actually getting to the carb.

Spray some carb cleaner or starter fluid into the carb, if it runs and dies you have a fuel issue.


One issue I had when i reinstalled the carb and gas tank, the lines were so dry the gas wasnt going down.... Sprayed carb cleaner in the gas line and it helped suck the gas down when the kart cranked over.

[littlemaximas]

aite thanx 4 the advice. i checked my valves today and they was so tight they wasnt closein so i adjusted them. but it still didnt crank. then i check my timeing and it was off 1 tooth sum how then i checked my stator and the puller i used messed up my wires so i got to get a new one now didnt get to see if it would crank after i set the timing.

[kliff]

The vacume petcock can give some problems on initial starts too. Alway a food idea to pull the fuel line from either the dicharge side of the fuel pump or petcock, put some gas in a squeeze type ketchup bottle(grocery store) and prime the system, even filling the carb bowl with gas before trying to start.

[BlackScorpion]

Does your buggy have CDI ignition. If it does you might want to check that it did not go bad, my carter did the same thing, once i exchanged the CDI it started up. Good luck keep us posted.

[littlemaximas]

well i finally got it runnin my exhaust valve was stuck open its runs good but smokes now i thank my rings r stuck so im waitin on my piston and rings to come in the mail.

[Greg800x]

Bingo! Valves not right!

[BlackScorpion]

Bingo! Valves not right!

Thanks for the reply, but this is an old post.