af16 issue

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Mystic
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af16 issue

Post by Mystic »

Ok here is the scoop been having trouble with this since I tried installing a stock pipe on a contesta bore so I swapped back to the 43mm bore to keep from damaging my good kit. I seems like the motor is getting too much air since i have to use a 48 or higher pilot and turn the air screw almost all the way in, it will idle fine with the screw all the way in on a 21mm oko. The other day i was riding and it soft seized on me so I dismantled it completely to find that the bottom ring had stuck and the piston was all gummed up from the klotz super techniplate i was running. I swapped the kit after i cleaned up the piston and bore onto my other af16 that i completely rebuilt with new seals just to eliminate leaking seals as my problem but still the same. I have checked everything and my only conclusion is that A. my head is leaking around the sparkplug or B. my 21mm oko is somehow gone bad. Havent done a leak down test. Is there any way a carb can suck in too much air even though everything is set right? Any suggestions beyond the basic stuff?
1986 Spree/ Eve af16 swapped 65cc Prodigy vari 8g 9:1 Ruima gears
21mm OKO 42/100 32:1 45mph kymco zx exhaust
1994 Elite S 17.5mm Arreche, Daytona reeds, SEF ramp, pump plugged :D
1987 Elite SE50 af16 swapped
1989 Elite E SB50p
2003 Yamaha Zuma
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Mystic
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Re: af16 issue

Post by Mystic »

just got my stock back on the frame and the stock airbox hooked up and she purrs like a kitten and the idle/air mixture screws are set and respond as they should so it was definately not my bottom end. I hate to spend money on something and it not be the problem. May order a head for the 43mm bore and see if that is the issue for around 25 dollars
1986 Spree/ Eve af16 swapped 65cc Prodigy vari 8g 9:1 Ruima gears
21mm OKO 42/100 32:1 45mph kymco zx exhaust
1994 Elite S 17.5mm Arreche, Daytona reeds, SEF ramp, pump plugged :D
1987 Elite SE50 af16 swapped
1989 Elite E SB50p
2003 Yamaha Zuma
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Downsouthdio
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Re: af16 issue

Post by Downsouthdio »

Deff. Need that airbox on there
Honda super dio
Corsa
26mm
Sparrow
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Downsouthdio
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Post by Downsouthdio »

mucho airrrr :!: :!:
Honda super dio
Corsa
26mm
Sparrow
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Red Eft Performance
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Re: af16 issue

Post by Red Eft Performance »

Pressure test it. You might still have a air leak and adding the airbox is just helping mask it.
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Mystic
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Re: af16 issue

Post by Mystic »

I swapped everything onto my other af16 that i completely rebuilt with new seals etc and same problem occurs so I am pretty sure its the carb that is at fault and downsouth...the stock airbox wont fit on an OKO carb :P Since it started with the Contesta I dont think it is my head leaing around the spark on the 43mm bore. I have a 24mm oko on the way so I will know for sure if its the carb or not within a few days.
1986 Spree/ Eve af16 swapped 65cc Prodigy vari 8g 9:1 Ruima gears
21mm OKO 42/100 32:1 45mph kymco zx exhaust
1994 Elite S 17.5mm Arreche, Daytona reeds, SEF ramp, pump plugged :D
1987 Elite SE50 af16 swapped
1989 Elite E SB50p
2003 Yamaha Zuma
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Trafficjamz
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Re: af16 issue

Post by Trafficjamz »

wanna sell the 21mm oko?
new best 1/8th mile time 9.647 seconds @67.155 mph 310lbs total weight
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Mystic
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Re: af16 issue

Post by Mystic »

:D As soon as a get the 24mm I will consider it Tjamz. What you wanna pay?
1986 Spree/ Eve af16 swapped 65cc Prodigy vari 8g 9:1 Ruima gears
21mm OKO 42/100 32:1 45mph kymco zx exhaust
1994 Elite S 17.5mm Arreche, Daytona reeds, SEF ramp, pump plugged :D
1987 Elite SE50 af16 swapped
1989 Elite E SB50p
2003 Yamaha Zuma
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Trafficjamz
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Re: af16 issue

Post by Trafficjamz »

Mystic wrote::D As soon as a get the 24mm I will consider it Tjamz. What you wanna pay?

I want to pay as little as possible. :smile: I heard it might be broken :wink:
new best 1/8th mile time 9.647 seconds @67.155 mph 310lbs total weight
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Mystic
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Re: af16 issue

Post by Mystic »

I hear ya man, I wont know for sure if its defective till I get another carb to test. The result will determine whether I sell it and for how much :D
1986 Spree/ Eve af16 swapped 65cc Prodigy vari 8g 9:1 Ruima gears
21mm OKO 42/100 32:1 45mph kymco zx exhaust
1994 Elite S 17.5mm Arreche, Daytona reeds, SEF ramp, pump plugged :D
1987 Elite SE50 af16 swapped
1989 Elite E SB50p
2003 Yamaha Zuma
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Downsouthdio
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Re: af16 issue

Post by Downsouthdio »

Woops shoulda paid more attn. :thumbsup:
Honda super dio
Corsa
26mm
Sparrow
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