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Post by smooch on Mar 11, 2020 14:59:05 GMT -5
I have a issue with my scooter starting. It turns over ok I don't know if the battery dosent have enough balls to get it to fire. Someone else had the same issue. I told them to change the coil and cdi. Mine are fairly new I got a no rev limit CDI. I was getting little spits out of the exhaust. I gapped the valves about 100 miles or so ago. It does start but runs good when it does and will start right up after running. If it sits for a few hours it won't start up again. Is the CDI advancing my timing so it won't start? Can it actually do that? I put a new spark plug in also. I appreciate any input. Thanks guys
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Post by krisgenchev on Mar 11, 2020 15:23:30 GMT -5
I have a issue with my scooter starting. It turns over ok I don't know if the battery dosent have enough balls to get it to fire. Someone else had the same issue. I told them to change the coil and cdi. Mine are fairly new I got a no rev limit CDI. I was getting little spits out of the exhaust. I gapped the valves about 100 miles or so ago. It does start but runs good when it does and will start right up after running. If it sits for a few hours it won't start up again. Is the CDI advancing my timing so it won't start? Can it actually do that? I put a new spark plug in also. I appreciate any input. Thanks guys Check your exhaust valve, if its too tight , you will be having hard time starting the scooter COLD, once its warm its starts right up.
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Post by smooch on Mar 12, 2020 17:41:45 GMT -5
I have a issue with my scooter starting. It turns over ok I don't know if the battery dosent have enough balls to get it to fire. Someone else had the same issue. I told them to change the coil and cdi. Mine are fairly new I got a no rev limit CDI. I was getting little spits out of the exhaust. I gapped the valves about 100 miles or so ago. It does start but runs good when it does and will start right up after running. If it sits for a few hours it won't start up again. Is the CDI advancing my timing so it won't start? Can it actually do that? I put a new spark plug in also. I appreciate any input. Thanks guys Check your exhaust valve, if its too tight , you will be having hard time starting the scooter COLD, once its warm its starts right up.
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Post by smooch on Mar 12, 2020 17:45:58 GMT -5
I have them set to specs. Intake .004 exhaust .005 this is a taotao 4 stroke with a BBK. How much should I go to check response .006?
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Post by smooch on Mar 12, 2020 17:56:25 GMT -5
I just ordered a new CDI and coil with a rev limit I think? I couldn't believe my eyes it was $9.95 with a 10yr warranty. Ya right!! I carry a spare with me along with a spare spark plug and belt not that I could replace that on the road 40ftlbs and locktight. I had one fall apart while I was driving destroyed my starter bendix and drive plate and belt.lol so locktight it is.
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Post by GrumpyUnk on Mar 13, 2020 12:45:08 GMT -5
If it won't start when cold, the carb part that richens the mixture may not be working. You may be able to hold a hand over the intake when cranking, which would make more fuel get pulled into the intake than normal to take the place of the byvalve(enrichment). Alternatives to check if lean mix is the cause of no-start are to squirt fuel into the inlet of the carb, or cycle the throttle several times if your carb has an accelerator pump. The pump will spritz a bit of fuel into the carb, towards the throttle plate when operated by the twist grip. There is a port at about the 3:00 position on the carb inlet that flows air to the byvalve. If you can blow thru it when cold, the byvalve is open to allow extra fuel, if not, it is closed and will not pass fuel. There is a chamber under the byvalve(built into the float bowl) that is filled from the float bowl via a tiny port in the 'wall' of the float bowl. If plugged, no fuel, and no enrichment of the cold mix, harder starting. tom
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Post by smooch on Mar 13, 2020 16:19:04 GMT -5
If it won't start when cold, the carb part that richens the mixture may not be working. You may be able to hold a hand over the intake when cranking, which would make more fuel get pulled into the intake than normal to take the place of the byvalve(enrichment). Alternatives to check if lean mix is the cause of no-start are to squirt fuel into the inlet of the carb, or cycle the throttle several times if your carb has an accelerator pump. The pump will spritz a bit of fuel into the carb, towards the throttle plate when operated by the twist grip. There is a port at about the 3:00 position on the carb inlet that flows air to the byvalve. If you can blow thru it when cold, the byvalve is open to allow extra fuel, if not, it is closed and will not pass fuel. There is a chamber under the byvalve(built into the float bowl) that is filled from the float bowl via a tiny port in the 'wall' of the float bowl. If plugged, no fuel, and no enrichment of the cold mix, harder starting. tom
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Post by smooch on Mar 13, 2020 16:19:31 GMT -5
If it won't start when cold, the carb part that richens the mixture may not be working. You may be able to hold a hand over the intake when cranking, which would make more fuel get pulled into the intake than normal to take the place of the byvalve(enrichment). Alternatives to check if lean mix is the cause of no-start are to squirt fuel into the inlet of the carb, or cycle the throttle several times if your carb has an accelerator pump. The pump will spritz a bit of fuel into the carb, towards the throttle plate when operated by the twist grip. There is a port at about the 3:00 position on the carb inlet that flows air to the byvalve. If you can blow thru it when cold, the byvalve is open to allow extra fuel, if not, it is closed and will not pass fuel. There is a chamber under the byvalve(built into the float bowl) that is filled from the float bowl via a tiny port in the 'wall' of the float bowl. If plugged, no fuel, and no enrichment of the cold mix, harder starting. tom
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Post by smooch on Mar 13, 2020 16:31:05 GMT -5
I have to throttle the shit out of it to start also. I'll change the fuel enriched to see if that works. The carb has been cleaned and adjusted it runs perfect when it starts. Is there a easy way to test the fuel enriched to see if it's working properly? I have about 4 or 5 of them kicking around. I want to test before install.... Thanks for the imput I think you're right I was thinking about that a while ago and forgot about checking it. I bought 2 20mm CVK carbs and they were terrible no matter what I did. So I cleaned and re jetted my pd19j carb and it ran perfect.
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Post by smooch on Mar 13, 2020 16:49:44 GMT -5
If it won't start when cold, the carb part that richens the mixture may not be working. You may be able to hold a hand over the intake when cranking, which would make more fuel get pulled into the intake than normal to take the place of the byvalve(enrichment). Alternatives to check if lean mix is the cause of no-start are to squirt fuel into the inlet of the carb, or cycle the throttle several times if your carb has an accelerator pump. The pump will spritz a bit of fuel into the carb, towards the throttle plate when operated by the twist grip. There is a port at about the 3:00 position on the carb inlet that flows air to the byvalve. If you can blow thru it when cold, the byvalve is open to allow extra fuel, if not, it is closed and will not pass fuel. There is a chamber under the byvalve(built into the float bowl) that is filled from the float bowl via a tiny port in the 'wall' of the float bowl. If plugged, no fuel, and no enrichment of the cold mix, harder starting. tom
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Post by smooch on Mar 13, 2020 16:52:10 GMT -5
Can I test them with a battery in my house? The fuel enrichers!! If I can could you walk me through the process?
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Post by GrumpyUnk on Mar 14, 2020 8:44:35 GMT -5
A video has been made about testing the mechanism which I think is linked somewhere on the site. 90GTvert made it, I think, showing the probe extending ~1/4" as it heated up. A second test is to use a tube to blow into the port that feeds the enrichener. When cold, it should pass air, when hot, no air should pass. The port is at about 3:00 o'clock on the air cleaner side of the carburetor inlet. It is about 3/16" in diameter(more or less) so you'll need some small rubber tubing or a tapered fitting to seal it so you can apply air pressure. The heater is only functional when the engine is running as it uses the 'raw' voltage to operate, so it should not go 'lean' until the engine has started and ran for ~30-45 seconds(or more). The Kymco Super 9 manual PDF(available online if you search) has instructions on testing the mechanism as explained(maybe) above. tom
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Post by 90GTVert on Mar 14, 2020 10:40:02 GMT -5
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Post by smooch on Mar 14, 2020 14:48:28 GMT -5
If it won't start when cold, the carb part that richens the mixture may not be working. You may be able to hold a hand over the intake when cranking, which would make more fuel get pulled into the intake than normal to take the place of the byvalve(enrichment). Alternatives to check if lean mix is the cause of no-start are to squirt fuel into the inlet of the carb, or cycle the throttle several times if your carb has an accelerator pump. The pump will spritz a bit of fuel into the carb, towards the throttle plate when operated by the twist grip. There is a port at about the 3:00 position on the carb inlet that flows air to the byvalve. If you can blow thru it when cold, the byvalve is open to allow extra fuel, if not, it is closed and will not pass fuel. There is a chamber under the byvalve(built into the float bowl) that is filled from the float bowl via a tiny port in the 'wall' of the float bowl. If plugged, no fuel, and no enrichment of the cold mix, harder starting. tom
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Post by smooch on Mar 14, 2020 14:53:07 GMT -5
If it won't start when cold, the carb part that richens the mixture may not be working. You may be able to hold a hand over the intake when cranking, which would make more fuel get pulled into the intake than normal to take the place of the byvalve(enrichment). Alternatives to check if lean mix is the cause of no-start are to squirt fuel into the inlet of the carb, or cycle the throttle several times if your carb has an accelerator pump. The pump will spritz a bit of fuel into the carb, towards the throttle plate when operated by the twist grip. There is a port at about the 3:00 position on the carb inlet that flows air to the byvalve. If you can blow thru it when cold, the byvalve is open to allow extra fuel, if not, it is closed and will not pass fuel. There is a chamber under the byvalve(built into the float bowl) that is filled from the float bowl via a tiny port in the 'wall' of the float bowl. If plugged, no fuel, and no enrichment of the cold mix, harder starting. tom
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