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Post by dragono on Jul 11, 2014 22:09:57 GMT -5
Here's the vid. Like I said it dies out whether the air box is on or off. Also I ran the gas line directly to the carb like you said. No change. Haven't tested compression. However one would think its ok considering the gas flow when the petcock is hook up flows nicely. (no dribble) And the starting it up is very easy. Except in the video because I had clips holding the battery to its respective wires.
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Post by alleyoop on Jul 11, 2014 22:21:49 GMT -5
Yep to much air not enough fuel bud, the thing just bogs out as soon as you open the throotle I can hear it. Did you change the MAIN JET in there do you know what main jet is in there now?
Alleyoop
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Post by dragono on Jul 11, 2014 22:36:16 GMT -5
Both main jets are stock with the carb they came with. I checked that in both carbs. No numbers on either of the main jets. What should I be running at I know many 4 stroke 50's are between 70-80 usually. No idea about 2 strokes though.
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Post by alleyoop on Jul 11, 2014 22:47:43 GMT -5
Ok Look at the picture of your carb see that screw on the AIR FILTER SIDE turn that 1/8 CLOCKWISE and try it. IF IT GETS BETTER then try 1/16 clockwise turns WHAT that will do is CUT OFF SOME AIR. Alleyoop  |
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Post by alleyoop on Jul 11, 2014 22:49:10 GMT -5
Let me know if it helps it
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Post by dragono on Jul 11, 2014 23:02:40 GMT -5
Ok. Gonna get up bright and early to trouble shoot her. Will let ya know then. Thanks for your help man.
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Post by alleyoop on Jul 11, 2014 23:08:13 GMT -5
WHAT YOU WANT OUT OF THE AIR RATIO SCREW IS TO GET THE HIGHEST IDLE. Then once you find the sweet spot you lower the IDLE USING THE IDLE SPEED SCREW, THAT SCREW IS IN THE MIDDLE OF THE CARB, you turn that COUNTER CLOCKWISE to lower the IDLE and CLOCKWISE TO RAISE the IDLE. And you want to lower the IDLE SO THE REAR WHEEL JUST WANTS TO TURN or NOT TURN at all.
Good Luck I will check the thread tomorrow.
Alleyoop
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Post by dragono on Jul 12, 2014 6:10:13 GMT -5
Got it to idle just fine. Took the air box off. It wasnt sealed up all the way so I took some tape to cover all the holes and cracks the reinstalled. Did the exact same thing idles lovely. Dies from 1/8 to Wot. (everytime I check the main jet is clear).But now I'm thinking that maybe my choke is not working. Previous owner had a manual choke installed. It had all but welded itself to the old carb so re using was a not go. I'm going to test the ac volts coming from the line that works the auto choke( wasnt connect originally ofcourse) once I find my multimeter. If thats not working then its too much gas, but we are assuming too much air.
Update: I remembered I had lowered the needle a bit to make it run a little leaner. So I moved the clip down 2 notches to raise the needle. I can now get it to about1/4- MAYBE 1/2 throttle before she bogs.
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Post by rexxk on Jul 12, 2014 12:30:15 GMT -5
WHAT YOU WANT OUT OF THE AIR RATIO SCREW IS TO GET THE HIGHEST IDLE. Then once you find the sweet spot you lower the IDLE USING THE IDLE SPEED SCREW, THAT SCREW IS IN THE MIDDLE OF THE CARB, you turn that COUNTER CLOCKWISE to lower the IDLE and CLOCKWISE TO RAISE the IDLE. And you want to lower the IDLE SO THE REAR WHEEL JUST WANTS TO TURN or NOT TURN at all. Good Luck I will check the thread tomorrow. Alleyoop start with a, high idle first. and ive found, that just sort of, finds your spot. from there, you can set it on the stand or sit on it, and snap the throttle back, if its cutting out, or bogging, then i usually richen it a little. if it, like sputters on you, lean it a little. get it best snap back, try it with you on it, readjust it from there, and then go. clean your jets. make sure your airfilter is clean and reoiled. airbox connected good. no airleaks on manifold, any connections. right lines and some clamps. |
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Post by alleyoop on Jul 12, 2014 13:18:36 GMT -5
Follow this procedure and you will get it right, it is a STEP BY STEP procedure you can't go wrong and if you mess it up it's your own fault for not taking your time and hurrying things. Alleyoop itistheride.boards.net/thread/53/2ts-carb-tuning |
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Post by dragono on Jul 12, 2014 13:32:21 GMT -5
I understand how to tune for the the idle speed. Does this help my 1/2 to full throttle? Or should I raise the needle yet again and possibly buy a bigger jet?
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Post by alleyoop on Jul 12, 2014 14:05:48 GMT -5
I understand how to tune for the the idle speed. Does this help my 1/2 to full throttle? Or should I raise the needle yet again and possibly buy a bigger jet? There are TWO ADJUSTMENTS on the CARBS, 1 the idle speed screw and 1 the Fuel or Air ratio screw TWO COMPLETELY DIFFERENT FUNCTIONS: IDLE SPEED is a SEPEREATE SCREW which is in the middle of the carb, what that does is raise or lowers the SLIDE that is all that screws does (Same as if you twist the throttle a little that screw does the same thing). The AIR RATIO MIXTURE screw controls FUEL THROUGH OUT THE THROTTLE RANGE. Look at the picture in the procedure and follow the instructions IT IS A STEP BY STEP procedure. You first have to adjust the RATIO before you start messing with the needle. Adjusting the ratio will effect the mid-range as well. |
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Post by dragono on Jul 12, 2014 14:14:04 GMT -5
Oh ok. I was on the thinking that the air fuel mixture only affected idle through about 1/4 throttle. (This was always my thinking when adjusting 4 strokes) guess these are different.
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Post by alleyoop on Jul 12, 2014 14:21:30 GMT -5
NO, Contrary to what EVERYBODY thinks the FUEL or AIR ratio mixture feeds fuel through out the throttle range. There is no cutoff to the passage from the pilot jet and or the Pilot Jet outlets the motor sucks out fuel from those fuel outlets all the time, they are always open. Alleyoop Here this will give you a look at how the system works.  |
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Post by rexxk on Jul 12, 2014 14:24:38 GMT -5
i give some information. you say to go to somewhere else.
Id look wherever i wanted.
the pilot jet hole compared to teh hole where the slide is is waaaaay smaller.
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..BAD TO THE BONE..
