Question about Cars & Co Walbro Wt603 Carburetor Pocket Bike Scooter Baja 5b

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Hi i have a rovan 30cc buggy....started ok and ran great for about 5 min. then began to bog down under throttle ...and would stall out restarting was difficult and this continued for the next 10 mins.then it just refused to start ......please any suggestions ? thank you !

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Hi and low adjustment on the carb and check idle.

Posted on Aug 13, 2011

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Flush/clean gas tanks and lines. Check sparkplug.

Posted on Mar 22, 2011

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Yamaha waverunner 1200RECENtly purchased wave runner took out for 4 mile trip ran great took in for evening done inspection and realized it didnt have oil pump only a plate were it should be. so i put some...


The first thing to check would be the compression. As long as both cylinders are with in 10 psi of each other you should be okay. Both cylinders need to be at least 100 psi. That would be the minimum for a motor to start and run. It should read aprox- 150 -- 165 psi. Also i would check for a possible exhaust leak, that would cause the motor to bog down because the carb is breathing in the exhaust fumes. Try running the motor with the hood up to see if you have a leak.

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This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

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hi i have a 80 series 4.2 diesel wagon, i went 4x4 and got bogged in this mud hole/puddle for a while, i drove back and fourth until i got out, but while i was trying to get out it stalled, it started easy straight after it happened and it drove great for a few hours after then all of a sudden it lost power and stalls if you don't give it any throttle but it idles fine, I'm not sure what it could be?

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2002 s10 zr2 runs rough bogs down when you


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Engine bogs down when speed is increased.


Ok I have r Royobi Tiller (30CC Gas) And last year it ran fine after rebuilding the Carb. This year it was "hard starts" Idles fine, (Tiny whisps of blue smoke in exhaust with correct ratio) Even seems to run better with the choke "on" but still...at idle only. as soon as I touch the throttle...its bogs down in tune with how much gas I give it. Little throttle? Little bog down, Little more throttle? Almost stalls, a normal throttle rev? it stalls dead! Then starts right back up again in 1 pull and idles fine again!? WTF? So after cleaning a clean carb again, (twice) and seeing no change I thought I'd go look at the original diaphragm and compare it with the rebuild kit diaphragm (which is the one in the carb.) And guess what? The replacement has a larger rivet by a factor of "2". So basically it was flooding the carb, I bent the needle tang down, better but no cigar. But I could rev it half way now. A second disassemble to bend it yet a bit further and Vrooom vroom vrooom ****! So check your needle valve even though you think its 100%. (Especially if you rebuilt the carb with a kit!)

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