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Post by ramblinman on Mar 20, 2014 9:16:08 GMT -5
problem solved. moved the needle up 3 notches and put my 112 main jet in. i may have over compensated and might be running rich now, idk.
strange how it suddenly lost power... i don't know if i will ever master carburetors.
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Post by ramblinman on Mar 20, 2014 9:15:07 GMT -5
problem solved. moved the needle up 3 notches and put my 112 main jet in. i may have over compensated and might be running rich now.
strange how it suddenly lost power... i don't know if i will ever master carburetors.
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Post by ramblinman on Mar 20, 2014 5:33:07 GMT -5
My wife says I spend more time playing with the scooter than I do spending time with her. She was out in the yard today giving me an earful... uh oh!  my ex reacted the same way to my personal activities... and you see how that turned out. |
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Post by ramblinman on Mar 20, 2014 5:21:10 GMT -5
WOW!! We also would like to see this Compression release on a CAM, man your mechanic sure can come up with some crazy things. Ask for the Old cam and ask him where the cam compression release is WE ALL I am sure would like to this this cam compression release thing. To tell you the honest truth bud, I would not go to that mechanic again and open my wallet to him. He really is taking you for a ride sorry to say, but if your happy what can one say. Ride Safe Alleyoop yea, dealer taking him on free rides... i'd also like to see what part he is talking about. still struggling to get my jonway back on the road. I know this is an old thread but I had the same problem with a 2013 150cc Jon-way scooter with 300 miles on it. Did everything that was stated here and on other sites finally took it to the dealer, turns out there is a sensor on the camshaft that can go bad, dealer is fixing at no charge. Dealer also stated that the cheaper Chinese version still use the sensor but that the Taiwanese versions do not use this sensor due to the problems with it. |
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Post by ramblinman on Mar 19, 2014 19:04:33 GMT -5
replaced ignition coil - no improvement. replaced pick up coil - seemed like it was a little better but still not right. then around 5,000rpm's the engine surged. so i guess it is still running lean.  i'll have to work on it again friday. at least i got it over 35mph, makes me feel a little better that it isn't anything serious. or so i hope. edit: unless someone has some better ideas i'm going to pull the carb friday and inspect the diaphram and needle. i haven't checked that yet. i do have a spare 24mm carb so i could swap and see if it improves. busy until friday so back to riding the atm50 for now. |
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Post by ramblinman on Mar 19, 2014 14:06:15 GMT -5
I live in north Florida and I could get 500 all day long for a scooter with a 50mm bbk. I've gotten that much for a older stock scooter. probably true, scooters seem to hold their value in this state and i don't think you can buy a new atm50 for less than $795 here. who wants new anyway? better to have all the bugs worked out but mine isn't in great shape... but don't tell her that, she just keeps going and going. |
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Post by ramblinman on Mar 19, 2014 13:51:55 GMT -5
i posted that here: itistheride.boards.net/thread/5479/new-150cc-running-leani suspect the problem may not be related to the lean condition though so starting a new thread. searching the web hasn't helped me pinpoint the problem but it has given me a couple things to check. ignition coil and pick up coil... i don't know how to test other than swapping for one that is working. any ideas? it will rev up to 7,000rpm (with more to give) on the stand but with load will barely hit 5,000 rpms (iicr). i'll dbl check that later today if that information is important. it's a 2012 150cc jonway with 145km. |
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Post by ramblinman on Mar 19, 2014 7:10:17 GMT -5
Check yo see if the air box or intake pipe is cracked . The sesled carbs suck . John will do... also read some other ideas this morning. ignition coil, pick up coil, blown head gasket. i could try the ignition coil off my 50cc assuming they are the same. i have an extra new pick up coil for my atm50, i'll have to check if it fits the 150. i didn't notice if the head was loose when i adjusted the valves. any other ideas while i take a nap? i need sleep, been up all night. should i do a spark test before i waste my time swapping parts? would i even notice if it had a weak spark? |
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Post by ramblinman on Mar 19, 2014 5:36:55 GMT -5
ok, so i was trying to remember exactly how and when the current symptoms started. obviously should have mentioned this earlier but my mind doesn't work as well as it used too.
after i drilled out the plug to access the screw i attempted to adjust with a homemade tool. it was difficult to reach but i did richen the mixture a little. drove it to work and back home everything was fine. the next day i rode 3 miles with no problems and then near my destination i noticed a loss of power. on my ride home acceleration was slow and top speed was 35mph indicated.
so now that you have the whole story what should i check first?
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Post by ramblinman on Mar 19, 2014 5:07:22 GMT -5
you scoot is worth no more than $300.00 and no less than $250.00 i was thinking about that also and at that price i think it is worth more to me. i may keep it, idk. |
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Post by ramblinman on Mar 18, 2014 19:41:05 GMT -5
what year is it , pair system or EGR ? your engine is not even broken in yet . John 2012, i think EGR but i'm not very familiar. true it is not broke in yet but it was running much better until i attempted to fix the lean condition. i'm not sure if i messed it up or if running lean for the past week has finally broke something. i'll tinker with it tomorrow, gotta go to work. |
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Post by ramblinman on Mar 18, 2014 19:27:43 GMT -5
The fuel delivery looks fine EXCEPT for your WOT trouble side. So putting in a little bigger Main jet will fix that. Alleyoop ok thx, i went from a 108 to a 110 today. think that is enough? i also bought a 112. assuming the fuel/air ratio is now correct what else should i check? i'm thinking cvt and compression test. anything else i am missing? |
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Post by ramblinman on Mar 18, 2014 19:16:09 GMT -5
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Post by ramblinman on Mar 18, 2014 18:41:42 GMT -5
both valves were a little tight but the performance is still about the same after adjusting to .05mm. i guess i will pull the cvt cover before i remove the head. assuming i have it tuned properly what else should i check?
i'm out of time today, i'll work on it tomorrow.
edit: would a compression test tell me if i have a problem with the valves? i might pick one up if i don't see any obvious problems after i pull the cvt cover.
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Post by ramblinman on Mar 18, 2014 18:02:28 GMT -5
help a noob understand that pics meaning compared to my plug... just now i changed to a 110 main. i know you said it was running lean off the idle jet but as white as that plug looked i figured it couldn't hurt to go up on the main. in the process of adjusting valves. major pain on this scoot, had to remove 3 panels to gain access. the plug looks lean yet. keep trying. that clicking sound you heard could also be detonation. are you using at least  octane gas? if not then try that and see if the noise quits. but the main thing is getting it richer. it looks really lean to me.  mobil |
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octane gas? if not then try that and see if the noise quits. but the main thing is getting it richer. it looks really lean to me.
mobil