Just tried starting my zenoah g26 magneto engine,the motor has been sitting for a few years,anyway the motor first started and ran fine for a couple minutes,then would only idle,would stall when throtleing up,pulled the carb n isolated gaskets off n noticed gas between gaskets,so I cut new gaskets and installed them,took a bit to get the motor to pull gas but it finally started ran fine,then did the same thing,pulled everything apart,same problem,my question is do you k ow where I can get a aluminum isolated block for this engine?I found one guy but there only for car applications,and do you think this is the only problem.

Check the little screen in the carb

An aluminum isolator block will not work as well as a phenolic one. Aluminum is great for transferring heat. Could make for difficult hot starts...boiling the fuel in the carb.

If the engine has not run for a long time, time to put in a carb kit...diaphragm is most likely hard.

+1

av8tor