New plug..gapped at .030...same thing. I'm going to ride it as is for now until i can upgrade the transmission per Burnt-Toast recommendation . I noticed on my last ride that if i crank throttle 1/8-1/4 turn and leave it there i get the best performance, quickest acceleration all the way to almost burying speedometer (around 45+ ???). If i try less throttle it has less power and if i try more throttle it has less power. I'm sure it's my bad carb tuning skills and weak trans setup.
2001 Honda Elite
1995 Yamaha Jog
1994 Yamaha Axis
I can't believe
that cop put me
in the backseat
when I clearly
called shotgun.
Next time you remove the plug, have a look at the plug sealing surface. If it's covered in oil and soot, no amount of tuning will rectify a bad plug seal. Lose that incorrect 18mm thermocouple and find the 14. Run without CHT if you must.
Better performance with partial throttle is normally a sign of lean jetting. When you lessen the air access by closing the throttle, the mixture normalizes. However "normal" behavior becomes unpredictable if the plug seal is bad. Fix that before going forward with any further tuning.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
id say that plug looks rich, definitely wont help if the plug isnt sealed. what color is the new plug after some WOT? if its lean it will bog and surge, if its rich it will sputter and make crummy power. rich will also run better at less throttle opening. the spark plug color tells you for sure.
OK, looks like i'm lean, good job Wheelman . I talked to a performance cycle mechanic who used to have a hopped up elite. I told him my setup and explained what was happening. Seems i'm getting up to 45 mph where i believe variator is kicking in then it just flattens out, no bog..no stuttering..no 4 stroking..just stuck at 46 mph. So i'm going to wait for warmer weather and re-tune. Waiting on parts anyway.
2001 Honda Elite
1995 Yamaha Jog
1994 Yamaha Axis
I can't believe
that cop put me
in the backseat
when I clearly
called shotgun.
Update: I WAS running rich. I took the elite to the mechanic and had him ride it. If he took off WOT it would take off *, when he let off throttle it would take of at 1/8 to 1/4 throttle. Going down on the main when my swollen gasket shrinks.
2001 Honda Elite
1995 Yamaha Jog
1994 Yamaha Axis
I can't believe
that cop put me
in the backseat
when I clearly
called shotgun.
. I noticed on my last ride that if i crank throttle 1/8-1/4 turn and leave it there i get the best performance, quickest acceleration all the way to almost burying speedometer (around 45+ ???). If i try less throttle it has less power and if i try more throttle it has less power. I'm sure it's my bad carb tuning skills and weak trans setup. 
. I talked to a performance cycle mechanic who used to have a hopped up elite. I told him my setup and explained what was happening. Seems i'm getting up to 45 mph where i believe variator is kicking in then it just flattens out, no bog..no stuttering..no 4 stroking..just stuck at 46 mph. So i'm going to wait for warmer weather and re-tune. Waiting on parts anyway.
