choke issue

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odinxxix
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choke issue

Post by odinxxix »

i have an fa50 and for some reason i have to use the choke on the bike and have to hold my hand over the carb to start it. is there an adjustment or is my carb that far out of adjustment.?
1986 honda spree(silver fox)
BBK
85 head
SB50 intake
SB50 reeds
taz gears
2.75X10 tires
2000 honda elite S
prodigy vari
2k grabber clutch springs
9:1 gears
jdm tail lite
1982 suzuki FA50
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Videonut
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Location: Ridgefield washington

Re: choke issue

Post by Videonut »

vaccume petcock?? if it is see if the lines are good. and if they have any cracks replace.
86 spree with honda cb750 rear shock
xr50 knobby tires, 32mph on slightly restricted craftsman air filter.
Scooter was stolen so i have to make it look good again
ALOW1
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Re: choke issue

Post by ALOW1 »

odinxxix wrote:i have an fa50 and for some reason i have to use the choke on the bike and have to hold my hand over the carb to start it. is there an adjustment or is my carb that far out of adjustment.?
When was the last time that you cleaned the carb?

Also, do you have the factory air cleaner on it?
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Clivester
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Re: choke issue

Post by Clivester »

I'm with Allow1 on this.

If you don't have an aftermarket air filter I'd say most likely a blocked pilot jet or small air leak in your manifold.
Lambretta TV-175 (wish I'd never sold it!)
2005 Vento Phantom R4i 125cc (stolen)
1986 Yamaha XC180 Riva
1985 Honda CH150D Elite
1988 Honda SA50 LX Elite
1989 Honda SB50
2007 iScooter 150cc
2006 Roketa 150cc
2006 TNG Venice 50cc
Kenny_McCormic
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Re: choke issue

Post by Kenny_McCormic »

Is it a choke or an enrichment circuit? Probably a dirty carb.
I am not a mechanic, nor do I play one on TV. Actually my advice is probably worth slightly less than what you pay to view it.
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odinxxix
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Re: choke issue

Post by odinxxix »

im not really sure which system it is. all i know is the its a lever that has r on one side and s on the other. linnes are good and i cleaned the carb about 2 weeks ago. i havs part of the original air box but no filter inbetween at the moment i have put a (dont laugh guys) but i used a worn out wash cloth and it runs but still have to cover with my hand and open the lever. i found a breather at advance auto that will work. hope this answers some questions and will help you help me. thanks guys.
1986 honda spree(silver fox)
BBK
85 head
SB50 intake
SB50 reeds
taz gears
2.75X10 tires
2000 honda elite S
prodigy vari
2k grabber clutch springs
9:1 gears
jdm tail lite
1982 suzuki FA50
ALOW1
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Posts: 680
Joined: Sat Jun 28, 2008 9:57 pm
Location: Morrison,IL

Re: choke issue

Post by ALOW1 »

Kenny_McCormic wrote:Is it a choke or an enrichment circuit? Probably a dirty carb.

It is a choke, it has a lever on the left side that says choke. You flip it with your thumb. I only know because I have a 90 FA50 in the garage.
ALOW1
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Re: choke issue

Post by ALOW1 »

odinxxix wrote:im not really sure which system it is. all i know is the its a lever that has r on one side and s on the other. linnes are good and i cleaned the carb about 2 weeks ago. i havs part of the original air box but no filter inbetween at the moment i have put a (dont laugh guys) but i used a worn out wash cloth and it runs but still have to cover with my hand and open the lever. i found a breather at advance auto that will work. hope this answers some questions and will help you help me. thanks guys.
Do not waste your money on a new filter from advance, you will not gain anything and it will prolly run worse. (Anybody agree with me on that?)

Unless it is modified, I would run nothing but the complete stock air box. Do you have the complete air box minus the filter or?
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odinxxix
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Re: choke issue

Post by odinxxix »

no i dont have the complete air box, i am missing the outer cover.
1986 honda spree(silver fox)
BBK
85 head
SB50 intake
SB50 reeds
taz gears
2.75X10 tires
2000 honda elite S
prodigy vari
2k grabber clutch springs
9:1 gears
jdm tail lite
1982 suzuki FA50
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Clivester
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Location: Seattle, WA

Re: choke issue

Post by Clivester »

Don't run your moped in that condition. You are likely to seize it.

What you describe suggests that your "filter" setup is not restrictive enough and is causing the bike to run too lean - this is POTENTIALLY DAMAGING.

If you cannot obtain a factory original air filter box and filter, you will need to buy a proper pod filter (like a UNI) and completely re-jet the carb to suit the filter setup. Do a search on this forum and learn about plug chops.

You can download a manual for the moped here:
http://www.scribd.com/doc/3829256/1980- ... ice-Manual

The carb is probably a Mikuni VM12SH. You will need that information to find suitable jets for it. Hopefully the pilot jet is not like the Spree/Elite and can be upjetted.
Lambretta TV-175 (wish I'd never sold it!)
2005 Vento Phantom R4i 125cc (stolen)
1986 Yamaha XC180 Riva
1985 Honda CH150D Elite
1988 Honda SA50 LX Elite
1989 Honda SB50
2007 iScooter 150cc
2006 Roketa 150cc
2006 TNG Venice 50cc
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Clivester
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Posts: 546
Joined: Fri May 30, 2008 3:10 pm
Location: Seattle, WA

Re: choke issue

Post by Clivester »

PS

Try the forum at www.mopedarmy.com for more help. You may find more people experienced with the Suzuki FA50 there.
Lambretta TV-175 (wish I'd never sold it!)
2005 Vento Phantom R4i 125cc (stolen)
1986 Yamaha XC180 Riva
1985 Honda CH150D Elite
1988 Honda SA50 LX Elite
1989 Honda SB50
2007 iScooter 150cc
2006 Roketa 150cc
2006 TNG Venice 50cc
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Videonut
Spree
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Joined: Sun May 03, 2009 12:48 am
Location: Ridgefield washington

Re: choke issue

Post by Videonut »

ALOW1 wrote: Do not waste your money on a new filter from advance, you will not gain anything and it will prolly run worse. (Anybody agree with me on that?)

Unless it is modified, I would run nothing but the complete stock air box. Do you have the complete air box minus the filter or?

agreed unless you know what your doing. i did make a success out of using a craftsman airfilter but TONS of trial and error and it took me FOREVER to get it right.
86 spree with honda cb750 rear shock
xr50 knobby tires, 32mph on slightly restricted craftsman air filter.
Scooter was stolen so i have to make it look good again
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