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Post by Alleyoop on Feb 11, 2016 15:50:58 GMT -6
WOW!! Your right no threads THEY ARE CHANGING THEM AGAIN!! Now they meter them and plug then up at that level WOW!! Now anyone with a 2012 or later scoot will have to just buy an aftermarket carb. Good investagating, that is a NEW ONE ON ALL OF US.
Alleyoop
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Post by raulie72 on Feb 11, 2016 21:52:04 GMT -6
Yes, I have seen this in aviation maintenance. They made the needle the size it should be. The cooper plate held the spring in place and it got plugged. The moment I saw the copper plate I knew I was in trouble. I hope the pictures helped out.
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Post by raulie72 on Feb 13, 2016 14:57:42 GMT -6
Thank you gentlemen, carb has been removed and replaced. It runs beautifully now. I'm going to wait until 300 miles to do the initial oil change. At that point I will change the fluids, spark and wash re-oil air filter. Could not have done this without your help.
I hope it continues to go smoothly.
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Post by Alleyoop on Feb 13, 2016 15:01:13 GMT -6
FANTASTIC!! Good job, a happy home is a happy wife   Alleyoop |
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Post by raulie72 on Feb 14, 2016 19:32:21 GMT -6
Well..now the bike won't start when cold. It starts and runs for 30 sec and dies. Ran great this afternoon. Was able to start it warmed up and ran great again. Now is abit colder. Starts and dies. If i touch the throttle it dies immediately. Wondering if the carb settled after the initial install now running lean or rich. Not sure what to do.
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Post by Alleyoop on Feb 14, 2016 20:09:56 GMT -6
Needs more fuel, when it gets colder MOTORS need more fuel so turn the fuel ratio mixture screw COUNTER CLOCKWISE 1/4 at a time and start it up and see if it stays running if not turn it one more 1/4 turn Also how is the IDLE if it is low it will do the same thing it should idle around 1500 rpms and the rear wheel NOT SPINNING.
Alleyoop
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Post by raulie72 on Feb 14, 2016 20:14:05 GMT -6
Needs more fuel, when it gets colder MOTORS need more fuel so turn the fuel ratio mixture screw COUNTER CLOCKWISE 1/4 at a time and start it up and see if it stays running if not turn it one more 1/4 turn Also how is the IDLE if it is low it will do the same thing it should idle around 1500 rpms and the rear wheel NOT SPINNING. Alleyoop Thanks Alley Found the cheap hose that came with the carb kinked. Removed it still dies. Going to try and richen the mixture. |
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Post by Alleyoop on Feb 14, 2016 20:19:55 GMT -6
On that carb the only hose is the DRAIN HOSE so kinked or not would not make a difference. The other hose is the OVERFLOW near the top of the carb and it is bent down. That carb is a pumper it has a pump on the throttle side when you twist the throttle so much it pushs the plunger down and it squirts some gas into the venturi.
Alleyoop
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Post by raulie72 on Feb 15, 2016 0:09:01 GMT -6
On that carb the only hose is the DRAIN HOSE so kinked or not would not make a difference. The other hose is the OVERFLOW near the top of the carb and it is bent down. That carb is a pumper it has a pump on the throttle side when you twist the throttle so much it pushs the plunger down and it squirts some gas into the venturi. Alleyoop Actually, this carb included a fuel delivery line with an attached filter in addition to the lines you mention. I have since eliminated the cheap lines and used the factory fuel lines that were on the bike. Gave it a 1/4 then counter clockwise and it worked good on the shand. Wife went for a ride worked great. It cold soaked outside for a few hours and when we tried to start again it would not stay running. Had to leave it at a friend's house. I'm going to try another 1/4 counter clockwise turn tomorrow. I don't have a tach seting idle slowly until the rear when starts movin then backing slowly until it does not. |
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Post by raulie72 on Feb 15, 2016 1:13:54 GMT -6
Could this run fine and then bog down, let it sit, start again run great, then bog down again be a valve leash issue? This bike has less than 200 miles. Just wondering if these symptoms could be caused by different issues. It just seems to run great for awhile shut it down, come back to it and it starts with the bogging down issue. It's driving me crazy
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Post by Alleyoop on Feb 15, 2016 12:26:57 GMT -6
If the valves were tight it would die out after it got nice and warm or hot. Very noticeable riding then coming to a stop and it wants to die or die unless you keep giving it some gas. Tight valve will cause loss of compression and will not hold LOW IDLEs.
So do the 1/4 turn one more then if it still does not want to start after it gets hot and you have to wait about 30 minutes before it will start then that would be your valves. So why not SET THEM BOTH to .003 inchs.
Alleyoop
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Post by raulie72 on Feb 15, 2016 18:47:41 GMT -6
Well not a valve problem. Once its running it stays running no mater whst you do. I got to keep working on the carb. Last night i would have to restrict airflow for it to start.
Clearing up...
4 stroke 18mm carb, 49cc
Clockwise leans the mix
Counter Clockwise richens it.
If it does not stay running out fits not start cold but it does start when I cover the intake, its lean. Turn counter clockwise to richen the mixture until it runs on 1/4 turns then back 1/8th of a turn?
It runs perfect during the day only on cold nights or mornings did it give me an issue.
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Post by Alleyoop on Feb 15, 2016 19:00:59 GMT -6
So the scoot is sitting outside not in a covered area, garage or shed ? When you say you cover the INTAKE? do you not have an air filter on it or airbox. what kind of air filter is on there.
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Post by Alleyoop on Feb 15, 2016 19:07:56 GMT -6
Start it up and adjust the Fuel Ratio Mixture to GET THE HIGHEST IDLE out of it KEEP turning it the same way as long as every 1/4 turn the IDLE GOES UP. You stop turning the 1/4 turns when the IDLE NO LONGER RISES.
Alleyoop
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Post by Alleyoop on Feb 15, 2016 19:23:00 GMT -6
Also don't forget that carb is a pumper so before hitting the start button give the throttle a couple good twists and get some gas in the venturi, that will help in starting it cold.
For motors to start right off the bat when cold with 1 or 2 hits on the start button the mixture of air and fuel has to be good otherwise one or the other air or fuel will be off and they will be little harder to start. But if you have to cover the intake Cutting off air then it is STILL LEAN so keep turning the screw COUNTER CLOCKWISE 1/4 turns AS LONG AS THE IDLE RISES on each turn.
Alleyoop
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..BAD TO THE BONE..
