Originally Posted by
inferno13
i have tried everyhing you can think of with this GO.21 GEN 5.5, and still geting lean bog. very very very frustrated with it, RUNNE is suppose to be sending me updated carb rebuild kit but havent heard back from him after i sent my addy to him? also asked him to send long needle? after having issues with this engine, kinda leary about trying the GX series out for next spring! or the mg66, unless they have a killer return policy! or warranty of some sort. ive never had to fight with a engine this long, im not a quit'er (fighting with it for 6 months) but this is getting alittle rediculas. i see im not the only one having these problems! with this engine in my truggy, does not even make it fun!!!
no you are not the only 1 but you guys with the problem are running older motors!...soooo...im thinking you are chasing a tune on a motor that could very well have 1 of the following problems and you dont know it:
1.needs a new FRONT bearing cause that could cause an air leak and give you issues
2. the seals for the carb are bad...which you are GOING to try.
3. just slightly out of SPEC conrod...WILL give you tuning issues if the conrod has allittle bit of play on the crank pin.
4.if you tighten the carb pinch bolts too much too many times it can deform the case where the carb goes on!(thus creating an air leak)
5.loose head bolts or leaking head shim(just an option)lol
