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Post by xxmindkillrxx on May 3, 2015 17:38:14 GMT -5
Yea the carb I have is a Keihin clone and has the longer style jets. Anywho, I rode it a bit this weekend and it seems to run a bit better after about 15 minutes of riding once it's warmed up. The bog isn't quite as bad but it will want to idle pretty low. I'm gonna set the idle a little higher and see if it helps any.
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Post by xxmindkillrxx on May 1, 2015 12:35:40 GMT -5
So I checked for any air leaks and came up with nothing, I blasted starting fluid all around the carb and intake manifold but didn't hear a bit of difference in the idle. I did manage to record a video of how its acting though so you guys can see it for yourselves.
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Post by xxmindkillrxx on May 1, 2015 11:28:31 GMT -5
Ok so I'm getting ready to test for air leaks in just a few but I wanted to update as I just found out the carb is already a 20mm, so apparently its already been upgraded. I'm not sure of the size jets in it though. Is there any way to tell what size they are? I'll update in a bit as to whether I find any air leaks.
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Post by xxmindkillrxx on Apr 30, 2015 21:33:32 GMT -5
Well the slow throttle drop stopped after messing with it some more and attaching the air filter directly to the carb. The guy who had the scooter before me had the throttle cable pulled too tight to where the butterfly valve was staying too open during idle so I fixed that. I'm gonna go ahead and double check my intake manifold and around that area for any air leaks tomorrow. I'm also gonna order a 20mm carburetor from scrappydog just to help a little with performance and I guess take it from there.
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Post by xxmindkillrxx on Apr 30, 2015 20:40:48 GMT -5
Ok so I also failed to mention the scooter does have a BBK (Sorry). I did check all the hoses and vacuum lines but no leaks. As far as it sounding any different, it just sounds a tad louder due to the high flow filter I'm guessing. I've got it directly attached to the carb. I managed to adjust the carb to where the scooter is driveable but the only thing I can't really fix is when I first take off if I give it full throttle it will bog down and want to die. I kinda have to gently rev it a few times before taking off to get it to take off without it bogging. I'm thinking it's just not getting enough fuel. It also still wants to idle a little funny, sometimes a little high, sometimes a little low. Should I try upjetting my carb? Or maybe just buy a bigger carb?
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Post by xxmindkillrxx on Apr 30, 2015 12:51:04 GMT -5
So I just got my scooter back from the shop where they installed a new head, the old one was leaking compression. Well I managed to ride it home but it was running kind of funny like the air/fuel mixture wasn't correct. I need some advice on adjusting the carb as I've neved messed with one too much. The scooter is a 50cc GY6 with a uni air filter. I tried adjusting the air/fuel screw for a little more fuel but whenever I would hit the throttle the scooter would rev up and pretty much stay at high rpm's for a bit before slowly coming back down. So I messed with it some more and got it to where the scooter would bog down and almost die when I throttled it like it was getting too much air. I could really use some advice as I'm not too savvy on tuning a carburetor correctly. If it helps any its a Keihin carb and its already been cleaned twice, by me and the shop. Any help is appreciated.
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Post by xxmindkillrxx on Apr 22, 2015 10:47:43 GMT -5
I readjusted the valves but still nothing. All vacuum lines are connected properly and I tested for spark when it was dark outside by removing the spark plug but keeping it connected to the boot and holding it against the head and cranking. It doesn't seem to be a real strong spark, but its there. I'm not really sure what else to check so I dropped it off at a local scooter repair shop earlier and I'm hoping the guy there can figure out something I can't. I'll update as soon as I get it back.
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Post by xxmindkillrxx on Apr 21, 2015 23:38:12 GMT -5
Yes I set the piston to top dead center and lined up the holes correctly on the cam gear. I'm thinking maybe the valves need to be adjusted. I'm gonna give it a try in the morning but if it doesn't work I have absolutely no clue what else it could be.
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Post by xxmindkillrxx on Apr 21, 2015 15:27:23 GMT -5
So I bought a 50cc scooter from a guy here recently, and it seemed nothing was wrong with it when I was checking it out (Found out it has a BBK). I even rode it home but once home had some trouble starting it again. I waited about an hour and drained the carb just to make sure it wasn't flooded, and it started right up on the second kick (The electric start doesn't seem to work, it cranks over but just won't start it, so I've been using the kick start). Well I let it idle for just a few minutes and shut it off. Two days later I go outside and take a look at everything. The fuel line was running straight from the gas tank to the carb so I reconnected it to the petcock. I also charged the battery. Now all of a sudden it won't start at all. I rebuilt the engine with new gaskets, changed the oil, got a new spark plug, and cleaned out the carb and fuel petcock. Still nothing. It won't even start on starting fluid. Every few kicks or so it sounds like its barely trying to start but won't. Its getting fuel, spark, and had enough compression to pop my finger out of the spark plug hole. I'm completely stumped, so any suggestions guys?
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Post by xxmindkillrxx on Feb 19, 2014 17:46:33 GMT -5
I appreciate all the help you guys, I got the muffler welded back together and put on. Scooter started right up. Besides needing to adjust the carb everything runs fine.
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Post by xxmindkillrxx on Feb 19, 2014 14:01:08 GMT -5
Cool deal, if its a soft seize what would be the remedy for that? Is it going to need a new engine or is this one salvageable?
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Post by xxmindkillrxx on Feb 19, 2014 2:46:40 GMT -5
Ok, so I recently got a Honda Elite S 50cc off a guy, not too sure about the year, probably around 2000. Its pushing about 1100 miles and the guy said he replaced the engine but from the looks of it only the head is new. Anywho, it ran fine when I test drove it besides needing new tires which I replaced but I was on the way to a friends house and the muffler broke off. It caught the fan causing the engine to stop so I waited till I got to his house and made sure nothing else was blocking the fan. Well my friend started it up and ran it for about a minute just fine. Later on I went to leave (note the muffler is still off) and got to the end of the road before the scooter slowly died while cruising. As it started to quit on me I was trying to give it gas but nothing. Now it won't kick start or anything. Normally I wouldn't ride without a muffler but I atleast had to get it home. Any help is GREATLY appreciated as I'm relying on this thing for transportation. Thanks in advance you guys.
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