Well since my youngest son is too small for the Eton 70 we have... My oldest son took it a little ride.. Carb is a little off jetting wise.
Heres what it has:
70cc high compression top end 20 minutes on it
Upgraded intake and reeds.
21 mm carb .
38 Pilot jet
92 Main jet
Some clutch spring and rollers were changed.. I am going to take that apart tomorrow to see whats it in.. Reaches full speed pretty quick but not all that fast.. Seems like it should have a little more but the carb mixture screw is almost all the way in and it has a funny idle. Adjusting the screw does very little.
Need some help on figuring out where to start with the jets..
I'm not the best person in the world for jetting, but both of those jets you mentioned sound very lean to me. What color is your plug when you do a full throttle plug chop? It should be chocolate brown and chalky, ideally. If the idle screw isn't doing anything, it could either be plugged with gunk, or its too small.
My son's 70CC eTon, with a mild tune has the following:
21mm OKO Carb:
#21 Needle on Clip Position #2
42 Pilot Jet
110 Main Jet
1 to 1.25 turns on Air Screw
Both of my trusted motor builders tell me that if the motor runs like a scared rabbit, then shut it down and check the plug. haha.
plug is definitely wet when i pull it.. It also will not idle stable.. it will idle high for a minute after riding then settle down a little and then stall out.. It seems like it runs best when the mixture screw is only 1/4 turn out or less.. I know something is up.... just not sure what exactly..
Carb is clean.. I checked that 3 or 4 times now. Ill try one of the other jets i have sitting on the shelf and see... The ones I have are definitley a little bigger then whats in it.
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