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49cc Pocket Bike Carburetor Won't Draw Fuel

The motor fires up briefly when I manually inject fuel through the throat
of the carb. Will not fire up otherwise. I have completely cleaned the
carb twice. I siphoned the fuel line to make sure that the fuel is available
at the carb fuel inlet. I also have purge pumped the carb (repeatedly pressed the plastic bulb at the bottom of the carb). I have been working
on small engines for many years, but this one has me totally at a loss. Any suggestions?

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First off, are you getting fuel to bulb? if not are you sure the lines aren't on carb backwards. if you are getting fuel to bulb and won't run then here's what i'de check. how's the compression, may not be making enough vacuum to draw fuel, have you removed the mixture screws and blown out passages, there is a little sreen under diaghram in some of those little carbs that gets clogged, carb base gasket?

Posted on May 18, 2010

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My x7 pocketbike does the same thing so Im going to try this solution as soon as i get home

Posted on Sep 18, 2012

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Posted on Jan 02, 2017

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I have a pocket bike that wont start unless u put gas where the spark plug is and then it will run&idle but once u give it throttle it dies there is no high or low screw there 1 screw &the idle screw


Hi, Anonymous more than likely it's clogged carburetor jets, obstruction in the fuel system or a faulty battery for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Common Reasons Why My Pocket Bike Wont Start
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What To Do If Your Pocket Bike Won Start or any 2 stroke engine
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1 Answer

Suzuki gsxr 750 slingshot cranks but wont start.


For a motorcycle engine to run you need compression, ignition (spark) and fuel. Quite often with a bike like a Suzuki if the plugs get even a little wet but otherwise look like great plugs, the motorcycle will not start. So, new plugs are a good place to start, however if you put in new plugs and try to start a few times and have fuel but no spark the new plugs may become unable to start also.

FIRST check to see it you have spark at the spark plugs, then remove the plugs and either do a compression test with a gauge OR put a finger over the plug hole and turn it over and if you have adequate compression the engine will blow your finger off of the hole when it comes up on the compression stroke.

If you have a carburetted bike you can check for fuel by taking off the air filter and operating the throttle a few times full open in which case the accelerator pump should eject a spray of fuel into the carburetor throat. With Carb or Fuel Injection you could also spray some fuel into the carb throat or the induction module throat while turning the engine over with spark at the plugs. If you have spark and compression but no fuel th eengine will fire when you spray the fuel into it.

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2 Answers

Do my 1996 gmc box van engine fuel injection or carburetor


Look.
If you see a fuel rail or a short-throat throttle body, it is fuel injected.
If you see a carburetor... well, I think you get the point :)
From the year (unless it is a non-U.S. model), it is most likely FUEL INJECTED.

Jul 25, 2014 | GMC Cars & Trucks

1 Answer

Cranks and fires but wont strats


Hi Anonymous, sounds like you have a fuel pronlem. Check fuel flow to carb, check fuel filter remove air cleaner and squirt starter fluid or Brake Kleen into carb throat, if it fires up and runs for a few seconds then you have a carb problem. Remove carb and bowl clean clogged jets and air passages, and clean bowl. Visit website below to download cheap ( $5.50 ) service manual that will walk you through it and also trouble shoot:
Harley Davidson Manuals Mark Workshop
Good luck

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1 Answer

Replaced coil on 49cc will not fire


u got spark put a dime in the plug that's the gap u need hope this helps or just a bit of gas into the head where the plug goes good luck

Jan 05, 2014 | RTO 47cc / 49cc Pocket Dirt Bike Atv...

1 Answer

Turning over but not firing


What year and is it carb or fuel injection? Chances are you have a carb model as fuel injection rarely gives this problem. Check choke operation on the carb. Assumes all other areas o/k, that is battery, ignition, starter motor etc. as a slowly turning motor is harder to start when cold.

Dec 28, 2013 | Harley Davidson FXD Dyna Super Glide...

1 Answer

Yard bug


Simply crimp fuel line to carburetor, remove carb bowl, if equipped with fuel shut off selenoid you will hear or feel it click when you turn the key to accessories, clean bowl, if full of debris run straightened paper clip up center of carburetor, in clamp fuel line briefly to make sure you have fuel to there, install all,,, if not remove plug rest against
Engine, turn over and check for spark!!!

Jul 11, 2013 | Garden

1 Answer

Italjet 49cc engine won't start but will fire up for few seconds


Suspect a dirty fuel filter or other fuel line trouble.

Feb 15, 2013 | Italjet Motorcycles

1 Answer

Katana won't start


Are the spark plugs firing ? Did you add a stabilizer to the fuel prior to storage?? If the plugs are firing, I would suggest that you drain the fuel bowl on the carburetors, disconnect the fuel lines and spray carbs full of a good carburetor / fuel injection cleaner and let it set a couple of days,then try to start again . If it still won't start, youmay have to disassemble the carbs and clean them in carb solvent.
If your bike has fuel injection, the gunk buildup from the gas may not be your problem. LAST RESORT Take it to a bike mechanic.
Hope this helps
Mickey - D - N - Tn.

Mar 25, 2009 | 1998 Suzuki GSX 600 F (Katana)

2 Answers

1994 Chevrolet s10 will not start. The starter, battery, and alternator are good. Could it be the eprom chip or a fuse or something else electrical?


its lack of spark, or lack of fuel. Dribble some fuel into the open carb throat whilst cranking, if it fires even once, then spark is ok

if you have fuel injection it could be a bad throttle body injector. Spray methanol from a squeeze bottle into the open throat, if it fires even once, then its lack of spark

Dec 19, 2008 | 1994 Chevrolet S-10

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