FA50 FUEL HELP!!!

Hello,

My FA50 will not run right. I have gone completely through the fuel system, so everything has been cleaned and reinstalled. The scooter is extremely hard to start, and when we finally get it running (with the assistance of starting fluid) it doesn't have much power. There is plenty of fuel in the carb, and the float and needle valve are functioning correctly. THe jet is clean as well.

When I spray starting fluid in the carb while it is running, the power increases, but then dies out after the SF is consumed. What can I try next? Has anyone else experienced this problem? Any help would be greatly appreciated. Thank you.

Dave

Re: FA50 FUEL HELP!!!

Leon Swarmer /

If the fuel system is perfect. Look at the spak. New plug, gap it correctly.. still not starting?? check the timing.

Leon

Re: FA50 FUEL HELP!!!

There must be some passages in the carburetor body or the emulsion tube above the main jet that are plugged partially or fully. Take the carb apart and clean every passage with compressed air and carb cleaner spray. Be careful not to get anything in your eyes though. don-ohio

Re: FA50 FUEL HELP!!!

Dave Campman /

Ive cleaned the carb alredy everything!! its sat in cleaning fluid for hours on end, everything is clean , also spark is very good, big blue bright, also is a new ngk plug

Re: FA50 FUEL HELP!!!

Dave Campman /

ive never touched the timing also there are no breakers points, my 84 fa50 uses a pei box

Re: FA50 FUEL HELP!!!

It's really easy to miss a passageway in those tiny carbs, and soaking will NOT clear all passages. It helps, but it is not a sure-fire fix. Poking thru those passages and spraying them out will cure the problem unless it's ignition usually. don

Re: FA50 FUEL HELP!!!

Hey Dave, Can you send me any close-up pics of the fuel lines so I can get mine running? PLEASE Thanks Benjy

Re: FA50 FUEL HELP!!!

hey did you clean the reed valve yet? check out the attachment

1081998089_fa50manual_004.jpg

Re: FA50 FUEL HELP!!!

also if you need other pages let me know.

Re: FA50 FUEL HELP!!!

Dave Campman /

i sprayed the passes multiple times and all of the jets are perfect.

Re: FA50 FUEL HELP!!!

Mike Monigold /

Just the fact that the motor performs so much better when you spray starting fluid into it tells me that there's something not right with the carb. I would look into:

float

float needle

float needle seat

plugged passageway (take a piece of real thin wire and run it through those small areas)

I don't suppose that you have access to another carb that works? That would narrow down the problem.

Keep in mind also that when you spray starting fluid in there that it's quite a bit more combustible than plain gasoline. Have you tried pouring a little plain gas in there? If it speeds up when you do that then it's definitely a carb problem.

Good Luck!

Re: FA50 FUEL HELP!!!

Dave Campman /

every time i take the carb off , i always find fuel in the bowl, ive cleaned the jets and needle, held them up to the light and there perfect, could this be a carbon buildup problem??

Re: FA50 FUEL HELP!!!

Phil Meisinger /

Greetings. Oddly enough I am having fuel troubles with my 82 fa 50. I saw that someone was sending attachments. I redid the fuelk system and carbeurator and left it for about a year. When I came back to the project, I had forgotten which hoses go where (duh!). I have tried numerous configurations, but to no avail. I was hoping that you or someone out there would have a diagram of the fuel lines. Carb is OK, byt fuel routing is not.

Thanks

Phil

Re: FA50 FUEL HELP!!!

Phil Meisinger /

Greetings. Oddly enough I am having fuel troubles with my 82 fa 50. I saw that someone was sending attachments. I redid the fuelk system and carbeurator and left it for about a year. When I came back to the project, I had forgotten which hoses go where (duh!). I have tried numerous configurations, but to no avail. I was hoping that you or someone out there would have a diagram of the fuel lines. Carb is OK, byt fuel routing is not.

Thanks

Phil

Re: FA50 FUEL HELP!!!

Neil Richardet /

Make sure your foam air filter is in very good shape or it will not run properly and you will waste lots of time with the carb.

« Go to Topics — end of thread

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account