Question about Vuka Motorcycles
When i turn the key all lights is on. i crank it and the engine just turn and turn .there is electricle discharge on the sparkplug and there is feul coming to the carb but still it dont start on its own.its a125cc enjine.the carburator has two pipes coming from the tank .
Posted by Anonymous on
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Posted on Jan 02, 2017
Your timing chain may need replaced.
Sounds like your plugs are sparking too late or too early.
or the gap is too big in your plugs. ( get a gapper and regap to .08 ish.. )
Posted on Sep 10, 2008
SOURCE: My car wont stay running
it could be the fuel pump not working right. you can buy an electric one and put on there and it will tell you right away if your original fuel pump is dead
Posted on Dec 29, 2008
Have you checked the float level in the float chamber?
I guess you may have to reset the float pin adjustment, its allowing more gas to pass through thn required and thus the overflow!
Not bad too, when you are working on the float assembly take the opportunity to blow out the fuel line from petcock to the carburator via the seat for the float pin,any foreign particals there would stop the float pin to seal up and thus overflow.
Fit in an inline fuel filter , this will help keep out the dirt or whatever.
Hope this helps.
Knight (Yamaha Seca XJ750A 1981)
Posted on Feb 13, 2009
SOURCE: Fuel Leak from the Carburetor
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).
Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.
Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Check the float as they can go bad and fill with gas such that they no longer float. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. The idle speed will probably different so adjust the idle screw to get back to where it was. This process should get you back on the road.
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Posted on Apr 23, 2009
well you could try to get a vacuum gauge and see if your car reads what it supposed to and if you buy one it could tell you what it could be.
Posted on May 21, 2009
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