LunchMoney
New Member
Hello dear people,
I have a 66cc china doll, about 5-6 liters of gas were rand thru the engine and was using 25:1 ratio with a non synthetic oil. Ran great, although needed it to be more rich, the second notch from the bottom of the needle and it seemed the engine was quite hot and the spark plug had no obvious color so i'm guessing it was lean. Now I have switched over to a full synthetic oil, running about 40:1-ish (my measurements were off) and at first it lost lost power, the plug is still lean imo. I have tried to move the clip to the most rich position, but then at 80% throttle it starts 4-strocking. No air leaks were noticeable, the idle is great. What should I do guys? Help!
I have a 66cc china doll, about 5-6 liters of gas were rand thru the engine and was using 25:1 ratio with a non synthetic oil. Ran great, although needed it to be more rich, the second notch from the bottom of the needle and it seemed the engine was quite hot and the spark plug had no obvious color so i'm guessing it was lean. Now I have switched over to a full synthetic oil, running about 40:1-ish (my measurements were off) and at first it lost lost power, the plug is still lean imo. I have tried to move the clip to the most rich position, but then at 80% throttle it starts 4-strocking. No air leaks were noticeable, the idle is great. What should I do guys? Help!