Pocket bike wont start again. - Pocket Bike Forum - Mini Bikes
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post #1 of 25 (permalink) Old 07-31-2016 Thread Starter
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Pocket bike wont start again.

My pocket bike wont start again. It ha some troubles with the carb so I put the second one I ha it stared right away. Tried today wont start. Put in my 3rd new carb , still wont start. I have spark air coming from muffler. Gas in the carb everything is working but the bike wont start. I have noticed that the gas was coming from the bottom of the muffler, like where it connects to the egine. It is a 2 stroke and 47cc pocket bike.
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post #2 of 25 (permalink) Old 08-01-2016
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Re: Pocket bike wont start again.

Could have been that you have flooded it. I would recommend clean your carb throughly especially the main jet. Also try taking the exhasut off sounds like there is a bit of oil/gas sitting in the pipe there and emptying it out.

IF YA AINT MIXIN GAS YA AINT HAULIN AS*

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post #3 of 25 (permalink) Old 08-01-2016 Thread Starter
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It's a brand new carb. So you want me to take out the muffler and should I give it some pulls when it's out?
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post #4 of 25 (permalink) Old 08-01-2016
Re: Pocket bike wont start again.

Its it a box exhaust or a pipe off the head?? Might be your coil is weak, firing outside the engine and firing under 125lbs. of pressure is another story or spark plug could be fouled. If your float level is to high or needle not sealing it can flood the engine.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #5 of 25 (permalink) Old 08-01-2016 Thread Starter
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But before it started in one pull. I see oil near the Ecuador where it goes into the engine. How do I fix the flood
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post #6 of 25 (permalink) Old 08-01-2016
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Re: Pocket bike wont start again.

Was it starting before the new carb. And a lot of times the carb isnt clean on the inside.

IF YA AINT MIXIN GAS YA AINT HAULIN AS*

Lucky 7, PBU Scorpion Head Kit, Clone IP2 Pipe, Ported, Rocket key, Fiberglass reeds, NGK spark plug boot, HP spark plug wire, Modded Clutch, Walbro HDA 223 Carb
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post #7 of 25 (permalink) Old 08-01-2016 Thread Starter
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It was working, then stopped so I put it in a new one not starting now.
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post #8 of 25 (permalink) Old 08-01-2016
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Re: Pocket bike wont start again.

I would clean the carb and main jet very well. Also check how strong the spark is.

IF YA AINT MIXIN GAS YA AINT HAULIN AS*

Lucky 7, PBU Scorpion Head Kit, Clone IP2 Pipe, Ported, Rocket key, Fiberglass reeds, NGK spark plug boot, HP spark plug wire, Modded Clutch, Walbro HDA 223 Carb
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post #9 of 25 (permalink) Old 08-01-2016 Thread Starter
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Ok I will for sure
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Re: Pocket bike wont start again.

Really important the main jet is clear. Blast it with compressed air, or run something through it too make sure it is 100% clean and try not to bend the float forks in the carb.

IF YA AINT MIXIN GAS YA AINT HAULIN AS*

Lucky 7, PBU Scorpion Head Kit, Clone IP2 Pipe, Ported, Rocket key, Fiberglass reeds, NGK spark plug boot, HP spark plug wire, Modded Clutch, Walbro HDA 223 Carb
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post #11 of 25 (permalink) Old 08-02-2016 Thread Starter
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Everything is clean the spark is good cleaned the flood. Still not starting at this point I don't know what to do and what the problem can be. There was fast and oil in the carb
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Re: Pocket bike wont start again.

You might have an intake Vacuum leak check the reed, take off the carb & intake and carb gaskets, since you changed carbs, that is the likely suspect. That would make it very hard to start and it would not revv up high like it is suppose to. Cases have to be air & water tight, and needs good compression. The pressure made when the piston goes down keeps the reeds closed, even before BDC pressure is pushing gas up the main side transfer ports and any upper ports you have.

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post #13 of 25 (permalink) Old 08-02-2016 Thread Starter
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Yaa so when did I took out my first carb this gasket came off. It had a circle in the middle it was outisde the carb somewhere. So should I put that where the carb attaches to the black intake thing?
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post #14 of 25 (permalink) Old 08-02-2016 Thread Starter
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And I did not install the gasket cause never knew where it went.
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post #15 of 25 (permalink) Old 08-02-2016 Thread Starter
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It's this right
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Re: Pocket bike wont start again.

That's why the engine don't run, No gasket. It goes between the intake manifold and rear of the carb, look at the indents and the gaskets and match them to the intake manifold ribs. You also have 2 more square gaskets, one between the reed plate and cases, the second on the other side of the plate before you mount the engine side of the intake, then carb gasket and then carb.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #17 of 25 (permalink) Old 08-02-2016 Thread Starter
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I haven't opened the reed or anything i don't know anything about the other gaskets. That's the only gasket I know. Also, why is there gas U get the muffler where it connects to the engine
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post #18 of 25 (permalink) Old 08-02-2016 Thread Starter
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What is all this gas and oil
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Re: Pocket bike wont start again.

A 2 stroke sucks unburnt fuel out of the head pipe when the piston starts down. When to rich, the lower part of the pipe can fill with gas & oil over time cutting off exhaust flow. If the 2 gaskets behind the intake manifold leak it will make a lot of trouble. Put the gasket back, and see how it runs. I keep a couple of engine gasket sets here all the time and buy extra exhaust gaskets for $1.49 at pocket bike parts in Florida. I got 5 whole engine sets for $1ea. last year on eBay.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #20 of 25 (permalink) Old 08-03-2016 Thread Starter
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The bike never started. Took spark out and there was oil on it and I cleaned that. I don't what the problem is now. So your telling me that I am still missing some gaskets?
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