I have a 1987 Honda spree 48 mm bbk 21 mm pwk carb. Was using the oil pump plus premix. Now I'm running 32:1 premix with yamalube r. Smokes alot at idle . I started jetting down the pilot jet it was a 42 now down to a 38. At each size smaller it smoked less. But still smokes and will stall out when I throttle down whe riding. Also my clip is all the way up and the idle speed screw for the slide is out. So it's idle is running on the pilot jet only.
The main is a 95 jet
Spree bbk smoking
Moderator: Moderator
Spree bbk smoking
RATROD
86 stock spree
87 spree 48 bbk, carb, pipe
86 stock spree
87 spree 48 bbk, carb, pipe
Re: Spree bbk smoking
That's because with the pump and your premix you are running at least 24 to 1. Back off on the oil in the tank by half.
Bear 45/70

'83 Aero 80 X 3
'84 Aero 80 X 3
'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree

'83 Aero 80 X 3
'84 Aero 80 X 3
'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
Re: Spree bbk smoking
I took the pump off it's just straight premix..
RATROD
86 stock spree
87 spree 48 bbk, carb, pipe
86 stock spree
87 spree 48 bbk, carb, pipe
Re: Spree bbk smoking
I would then say that 32 to 1 smokes a lot compared to using the pump and that Yamahahah lube is smokie.
Bear 45/70

'83 Aero 80 X 3
'84 Aero 80 X 3
'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree

'83 Aero 80 X 3
'84 Aero 80 X 3
'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
Re: Spree bbk smoking
So I should just tune it up and not worry about the smoke.Do you think the 38 pilot jet is too small? Or maybe try another mix. When I let off the throttle it will stall out not sure if it's lean or rich .
RATROD
86 stock spree
87 spree 48 bbk, carb, pipe
86 stock spree
87 spree 48 bbk, carb, pipe