Post by oldchopperguy on Jan 15, 2011 10:16:32 GMT -5
I've had "limited" success using just the screwdriver bit from a multi-bit screwdriver between my fingers.
Now, considering your scoot is new and not fully broken in, and acting tempermental with weather, I may have some experience with mine that could help you. Mine also had numerous problems seeming to require re-tuning and all sorts of maintenance. After literally months of irritation, it seemed my problems always centered around the air-intake.
I finally removed the entire air-intake, leaving NOTHING attached to the carb mouth. Then, proper running could be obtained... I installed a Uni "sock" filter and the engine still ran fine. It's a tight fit under the "catback" frame rail, and not ideal, so I made a short extension to place the filter away from the carb mouth as many others do.
NO GOOD!
Bad running and impossible tuning again returned. I even removed the filter, leaving only the extension on the carb. NO GOOD. Remove the extension, leaving nothing on the carb and it runs fine again. Thankfully, the sock filter also allows great running and easy tuning. I'll put up with the tight fit of the filter! It wears, and will need replacing every two years or so, but I can live with that, considering the improvement it offers.
I don't think this intake situation is the "norm" with these scooters, as many run fine with stock air filter setup. BUT at least with mine, and several local guys' scoots, it is definitely a problem.
Now, mine starts and runs great regardless of temperature. I haven't touched it for tuning in almost two years.
Fine tuning after installing the Uni-filter did include a richer main jet (idle jet was fine) and, a major raising of the "needle" that moves up and down with the carb's diaphragm. In fact, I had to slightly alter the needle to get it a little higher than factory adjustments would allow. Without this aggressive needle adjustment, the engine would starve and bog on initial acceleration.
These scoots are SO very different, even from one "identical" model to another. I realize my fixes may or may not help you, but after three years riding these things, I'm FIRMLY convinced that all GY6's would run much better, and tune easier if the factory air-intake is removed and replaced with a Uni-filter with little or NO extension between it and the carb mouth.
Fine tuning on mine also eventually included replacement of the factory CDI with a no-rev-limit aluminum one off eBay, and, a Japanese Bando coil and ignition wire, also off eBay. These cost a total of around $40 and took only minutes to install.
These items brought an additional NOTICEABLE improvement in fast starting, less dying while idling cold, more power across the entire rpm range and general "driveability". I am sure my original CDI and coil were going bad, so my improvements may be greater than you'd get from replacing properly-working parts, but again, I see major improvement with these parts over factory-equipment pieces.
It took me a full year to get my scooter from "problematical" and sluggish, to snappy and reliable... But it only took a small amount of expense. Mostly it was weeks and weeks of futile attempts to initially tune the engine with factory air intake, and secondarilly, with factory CDI and coil.
Again, I realize all scooters have their own personality. What works on one may not work on another one. BUT... I'm pretty sure the changes I made won't ever hurt performance, and most likely will improve the way a scoot will start, cruise and top-out at WOT.
Hope this may be of help... Worst case scenario, it may be of little help, but best case, it may help a lot!
Ride safe!
Leo in Texas
Now, considering your scoot is new and not fully broken in, and acting tempermental with weather, I may have some experience with mine that could help you. Mine also had numerous problems seeming to require re-tuning and all sorts of maintenance. After literally months of irritation, it seemed my problems always centered around the air-intake.
I finally removed the entire air-intake, leaving NOTHING attached to the carb mouth. Then, proper running could be obtained... I installed a Uni "sock" filter and the engine still ran fine. It's a tight fit under the "catback" frame rail, and not ideal, so I made a short extension to place the filter away from the carb mouth as many others do.
NO GOOD!
Bad running and impossible tuning again returned. I even removed the filter, leaving only the extension on the carb. NO GOOD. Remove the extension, leaving nothing on the carb and it runs fine again. Thankfully, the sock filter also allows great running and easy tuning. I'll put up with the tight fit of the filter! It wears, and will need replacing every two years or so, but I can live with that, considering the improvement it offers.
I don't think this intake situation is the "norm" with these scooters, as many run fine with stock air filter setup. BUT at least with mine, and several local guys' scoots, it is definitely a problem.
Now, mine starts and runs great regardless of temperature. I haven't touched it for tuning in almost two years.
Fine tuning after installing the Uni-filter did include a richer main jet (idle jet was fine) and, a major raising of the "needle" that moves up and down with the carb's diaphragm. In fact, I had to slightly alter the needle to get it a little higher than factory adjustments would allow. Without this aggressive needle adjustment, the engine would starve and bog on initial acceleration.
These scoots are SO very different, even from one "identical" model to another. I realize my fixes may or may not help you, but after three years riding these things, I'm FIRMLY convinced that all GY6's would run much better, and tune easier if the factory air-intake is removed and replaced with a Uni-filter with little or NO extension between it and the carb mouth.
Fine tuning on mine also eventually included replacement of the factory CDI with a no-rev-limit aluminum one off eBay, and, a Japanese Bando coil and ignition wire, also off eBay. These cost a total of around $40 and took only minutes to install.
These items brought an additional NOTICEABLE improvement in fast starting, less dying while idling cold, more power across the entire rpm range and general "driveability". I am sure my original CDI and coil were going bad, so my improvements may be greater than you'd get from replacing properly-working parts, but again, I see major improvement with these parts over factory-equipment pieces.
It took me a full year to get my scooter from "problematical" and sluggish, to snappy and reliable... But it only took a small amount of expense. Mostly it was weeks and weeks of futile attempts to initially tune the engine with factory air intake, and secondarilly, with factory CDI and coil.
Again, I realize all scooters have their own personality. What works on one may not work on another one. BUT... I'm pretty sure the changes I made won't ever hurt performance, and most likely will improve the way a scoot will start, cruise and top-out at WOT.
Hope this may be of help... Worst case scenario, it may be of little help, but best case, it may help a lot!
Ride safe!
Leo in Texas
. Mine ran much better with an extension between the filter and the carb. Go figure. <shrug> Stock 35 pilot, 118 main summer-120 Winter. 
CAN YOU HELP ME OUT MAN,AS i LOST ME JOB DUE TO NOT BEING ABLE TO GET THERE?ANY INF