Freshman Rider
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Post by chamisataza on Jul 6, 2014 15:45:35 GMT -5
i have a 21 oko w/#103 mjet,uni air filter.,,it keeps on soft seizing every time i drive about 2+miles wot,so i adjust the a/f mixture to rich..i used i used gnu pro Honda 2 stroke oil inj/pre. i put some to my tank too..i just woke up around 2pm test drive my scoot w/87 degree drove it about 6miles max speed/wot. i feel the engine is seizing so i release the throttle a little and give gas feed by twisting throttle up and down just to feed gas in the piston.good thing it did not die/stop the engine i just slow down a little bit..it happen twice when i reached my garage...frustrated /thinking what to do..?%&*!><?..i decided to change my main jet to#100 since it the easy way to change..i test drive again the same route &miles w/ max speed&wot...this time i am very rough in the throttle i am ready anytime my piston will hard seized or hole in the center...i reached my garage safely NO seize.speed is good,speedometer almost reach max of course not against the wind..it runs good.my QUESTION is why it did not seized w/ a smaller main jet...
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Freshman Rider
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Posts: 85
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Joined: Mar 28, 2013 0:44:33 GMT -5
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Post by chamisataza on Jul 10, 2014 12:33:47 GMT -5
i just discovered i have a broken cylinder stud nut on my engine block that is a big problem to remove that broken nut in the engine...one broke that's why it keep on seizing it leaks...i don't know how to remove that....
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Post by alleyoop on Jul 10, 2014 13:01:46 GMT -5
I don't think it seized I think it flooded the spark plug to much fuel with the #103. If it seized you would have to wait for a while to cool off before it will start again. And if seized you would not be able to turn the crank until the piston cooled enough to slide up and down.
Alleyoop
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Freshman Rider
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Joined: Mar 28, 2013 0:44:33 GMT -5
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Post by chamisataza on Jul 10, 2014 15:01:38 GMT -5
my cylinder stud bolt is broken/cut to the engine block one of my cylinder bolt it leaks out. i send the engine to the scooter shop to remove that broken bolt
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Post by rexxk on Jul 12, 2014 14:19:54 GMT -5
if your bolt breaks, you are leaking air. it doesnt take heat to seize up engine temperature warm metal. air will. drying it.
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Freshman Rider
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Posts: 85
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Joined: Mar 28, 2013 0:44:33 GMT -5
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Post by chamisataza on Jul 14, 2014 16:20:04 GMT -5
i just put back my stock carburetor, my 21 oko carb was keep on seizing.i try to remove the cover in the uni air filter and it runs fast but my gas is just like pacman so i decided to back to basic stock carb it runs good just a low speed..
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Post by skuttadawg on Jul 15, 2014 23:39:14 GMT -5
A larger carbs means more air means leaner unless upjetted . I was running a 120 MJ on 19mm TK carb with Uni , pipe and BBK . I put the stock pipe back on since it was so darn loud and went down to a 105 since I lost the 110
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..BAD TO THE BONE..
