<font color="#00265e" size="2">prebres</font>
I feel your pain. I got a TYG 52CC From Hobbyking. This motor has been a love hate relationship with me. When I first got it it ran like a top. Put 1/2 gallon throw it on the stand, and it ran great. Put it in a cheap 540Edge and the motor became hard to start, and then after taking it to the flying feild (tried for 20min to get started) it started making a high pich sound and all my servos would jump around.
Got a replacement Spark controler and got it in the air once agin.
But the next day it wont start even with a electric starter.
I pulled the fuel cover of the carb off and found a lot of little metal peaces in the fuel screen.
After cleaning it out it ran for 1 more flight. Then it would not start once more.
I had a (Pro) look at it, and he we both belive the motor will prime but not keep pumping as when it dose start it will only run for 15 sec or so.
He then had me put my finger over the chock hole and we saw fuel squirtout the bottom of the carb!!! It would squirt out the carb were the thortle shaft was going throw the carb. He said that was my problem.
I only say this becouse I belive they both use the same carb.
And yes replace the plug with a NGK