Quadzilla Stinger 170cc Problem

[Rhyst21]

Hi guys i know this is not a blaster but i have just brought a quadzilla stinger 170cc and its been starting perfect from cold so i took it out on a track today and it was fine for about an hour then it just bogged down every time i press the throttle so i turned it off because i thought it maybe a bit hot then came back to it 30mins later and it started perfect but when i press the throttle it bogged down again. so i took the spark plug out and it was black so i cleaned it off put it back in and it was a bit better still not perfect. but then i went home and left it for a few hours and its back perfect again now i dont understand it when it gets rode for about an hour it boggs down but for the first hour its absolutly perfect help guys

 

[yzrider]

ur carburator is prolly dirt, but bro, this is a blaster site, i don't know the first thing about QUADZILLA chinese sh*t, i ahve worked on these chinese quads first hand and i'll tewll you, they'r junk, they'll last a good year and then break bad!

EDIT:S sorry to sound slike a jackass, didn't know u had a blaster too, lol, srry

 

[Rhyst21]

Is there anyway dirt could have gone into the carb today when i was on the track?

 

[RaWarrior]

Possibly, though the black plug would indicate it's too rich. I think the problem is that it's chinese. I've seen brand new chinese bikes/quads have problems like that. Cheap, sh*tty engines that just don't run well.

But I'll agree that the Chinese made stuff is absolute garbage. I had one of the Tractor Supply minibikes and it broke constantly. Eventually though enough redneck engineering it's been modified so much (including an entirely new motor and drivetrain) that it's now pretty reliable, but before I couldn't count on the damn thing to make it around the block, let alone a trip into the woods on the trails.

I also had a 70cc no-name chinese pit bike for a while, I got it for free. The ass-hats that designed it put the trigger coil literally right next to the front sprocket, with just a flimsy piece of plastic to shield it. Of course the chain derailed constantly, and finally it jammed and snapped off the coil from it's pot-metal bracket. JB Welded it back on, but I got so frustrated with the thing I gave it away again. More hassle than it was worth.

 

[Kungfutree]

Ok, first take off the seat and be sure you have access to the air box. Proceed to fog the air box with starting fluid and start it. Continue fogging until the can is gone. Grab another can keep going. By now the bike should be making some terrible sound. Call your insurance agent and put fire/theft insurance on it. Take poorly running quad to a swap meet with brand name plastics on it and try and sell it as a "hidden gem". If that fails, take it to the middle of no where, set it on fire. Next day call police and insurance agent. Collect insurance money and buy a real quadzilla. The End