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61 mga excessive fuel leaks I set the jets up the car idles great when checking the front carb does nothing when I lift the piston the back carb does react when I lift it, I check both with a uni sync

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Before adjusting check the piston needle for ware then make the float is set to the correct level then tune them , the float level is most important .

Posted on May 03, 2019


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Posted on Jan 02, 2017

  • 6966 Answers

SOURCE: I have a 2002 Yamaha

Hi and welcome to FixYa,

Based on your description, bike will start if you spray fuel into the carb, then the carb is not getting fuel. A couple of ideas you may want to explore/check/clean:

  • fuel valve;
  • some fuel valve have 3 positions, OFF, ON, PRI where the ON would only allow fuel to flow if there is sufficient vacuum from the intake manifold; the PRI allows fuel to flow unrestricted;
  • float settings of the carb;
  • fuel filter. Some tanks have built-in strainer/filter right before or part of the fuel valve.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Nov 27, 2008

  • 86 Answers

SOURCE: 2005 ktm 520 won't idle, cleaned carb new diaphram

did you try adjusting the air fuel mix screw?

Posted on May 21, 2009

  • 6966 Answers

SOURCE: My 50cc 2 stroke engine won't start, it has fuel

Hi and welcome to FixYa,

A couple of ideas:

  • fuel to the carbs - as you posted checks good;
  • fuel inside the carbs - loosen the drain screw at the bottom/bowl. Check for quality / quantity of fuel;
  • fuel into the combustion chamber - check the plug (would be wet).
For a no start 2 stroke engine with your described condition, a possibility to consider is too much / unburned 2T oil in the lower combustion chamber; remove sparkplug, air dry (or use compressed air).

Good luck and thank you for asking FixYa.

Posted on Sep 09, 2009

  • 274 Answers

SOURCE: Honda generator ei3000. Will run only a few mins

Tank filter not blocked? (Take tap off tank) Enough oil in motor? Try overfilling it slightly

Posted on Oct 23, 2009

  • 140 Answers

SOURCE: 2001 honda shadow vlx 600 idles fine will not take

G'day mate 1st there will be a small gauze filter in the fuel tap ,may also be little gauze at needle and seat in carbs 2nd have you got an air leak , check this by letting the motor idle and spray around the carb where it goes onto the head with WD40/CRC/RP7 style lubricant if it revs up , you got a leak, 3rd remember that a coil will take much more power to rev an engine up than to let it idle . hope this helps

Posted on Mar 31, 2010

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Hi I just want to how much easier is it to tune an edelbrock carb then a quadrajet carb

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