Re: e ton 90 cc not starting
It could be a number of things. First, check the pilot jet for obstructions. 2nd, check the auto choke & make sure it is opening. Is it getting oil ? Was the petcock left on while it was sitting ? I would re-check the pilot jet, ( make sure you can see through it), drain any old gas from the tank, to be sure it is getting enough oil in the mix, mix a gallon of gas with a good premix oil at 32:1 (4oz. to a gallon) , use a new spark plug and try to fire it up. If it had fuel in the tank while sitting, and the petcock was left on, enough fuel could have passed into the cylinder, filling the crankcase. If this is the case, pull the spark plug, turn kill switch to the "off" position. Crank the engine. Is a gas mist squirting from the spark plug hole ? If so, turn it over until the gas spray is gone. re-instal the plug & try to start. Also, check compression, reeds , & crank seals. I think your coil is fine. Since it starts but will not stay running, it pretty much sounds to be carb related.