surferfratt
Scoot Junior
NorCal surfer w/2 as yet running Kymco People 50's
Posts: 16
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Post by surferfratt on Jun 12, 2020 21:40:50 GMT -5
Some may have seen my post on the Lobby forum. So I still can't get this Kymco People 50 to start. Please help before these scoots end up in the river! In a nutshell, 1. Given 2 free scooters 2. Get one electric start to work 3. Spark? Check, fuel? Check, Compression? Only 75 psi 4. Installed new piston and rings, compression now 115-120 psi. 5. Meanwhile, drained all old fuel, pulled and cleaned carb, checked reeds (looked good). 6. Fresh fuel, still cranks but won't fire, not even for a second. Tried starter fluid, still nothing. 7. 2-stroke engine so no valves to adjust. So now the scoot sits awaiting decision on its fate. Scrap pile looking more and more likely. Two local shops won't mess with Chinese/Tai/Korean scooters. Any help is appreciated!
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Post by jbjhillbilly on Jun 13, 2020 1:57:03 GMT -5
So you’ve got one running? Cool.
Try swapping CDIs?
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Post by geoffh on Jun 13, 2020 8:42:20 GMT -5
You may have a flooded crankcase? Take the reeds out and try to get a pipe down to the bottom of the crankcase blow in there it needs to be dry to get the mixture right.
Geoff
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surferfratt
Scoot Junior
NorCal surfer w/2 as yet running Kymco People 50's
Posts: 16
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Post by surferfratt on Jun 13, 2020 11:57:22 GMT -5
So you’ve got one running? Cool. Try swapping CDIs? Nope, neither runs. But I haven't really messed with the second one yet. I'll try the CDI's though. Just seems like it at least ignite once. Thanks.
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surferfratt
Scoot Junior
NorCal surfer w/2 as yet running Kymco People 50's
Posts: 16
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Post by surferfratt on Jun 13, 2020 11:58:20 GMT -5
You may have a flooded crankcase? Take the reeds out and try to get a pipe down to the bottom of the crankcase blow in there it needs to be dry to get the mixture right. Geoff I'll try that but seems that it'd would have dried out after sitting for a couple weeks while I waited for the piston and rings to come in.
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Post by jbjhillbilly on Jun 13, 2020 20:32:44 GMT -5
None of the following are meant to call your skill into question - just trying to think thru your issue.
Your brake lights work when you pull the lever? And the kill switch is in the correct position? (maybe bypass them anyway)
Is your plug wet? I know you have fuel to the carb, but is it getting to the motor?
Did you spray starter fluid into the carb, or into the spark plug hole?
With a fresh top end, you should be getting closer to 150psi. You’re certain that the piston is installed arrow pointing towards exhaust port?
Is your exhaust clogged? Can you feel the air coming out?
If all that is good, then maybe your spark isn’t as strong as you think.
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surferfratt
Scoot Junior
NorCal surfer w/2 as yet running Kymco People 50's
Posts: 16
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Post by surferfratt on Jun 13, 2020 22:33:04 GMT -5
None of the following are meant to call your skill into question - just trying to think thru your issue. Your brake lights work when you pull the lever? And the kill switch is in the correct position? (maybe bypass them anyway) Is your plug wet? I know you have fuel to the carb, but is it getting to the motor? Did you spray starter fluid into the carb, or into the spark plug hole? With a fresh top end, you should be getting closer to 150psi. You’re certain that the piston is installed arrow pointing towards exhaust port? Is your exhaust clogged? Can you feel the air coming out? If all that is good, then maybe your spark isn’t as strong as you think. You are welcome to call my skills (or lack thereof) into question. I know basic engine maintenance (mostly old Jeeps and Toyotas) but am definitely no mechanic. Haven't tested the brake lights (pulled all the panels) and the kill switch seems to work (otherwise no spark right?). Can smell gas on the plug and I did try fluid straight into plug hole. And yes I was hoping for closer to 150 psi but I'll have to check the cylinder again, don't remember if I checked orientation. And I haven't checked the exhaust. Will tomorrow. Thanks for the tips! Definitely things I haven't checked or am even aware of!
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Post by jbjhillbilly on Jun 15, 2020 22:28:01 GMT -5
It’s weird that it won’t even cough/fart/sputter with starter fluid directly in the chamber. That’s why I keep thinking it’s somewhere in the electric/spark. It should detonate. CDI, ground, stator?
Timing? While you’re looking at the cylinder, double check the timing while you’re at it. TDC and all that.
The reason I asked about wet plug was to check for fuel getting to the engine.
Later - Have you adjusted anything on the carb? Talking with two guys in the shop who have lots of experience with the People, they say the carb is VERY temperamental.
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surferfratt
Scoot Junior
NorCal surfer w/2 as yet running Kymco People 50's
Posts: 16
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Post by surferfratt on Jun 16, 2020 22:22:37 GMT -5
It’s weird that it won’t even cough/fart/sputter with starter fluid directly in the chamber. That’s why I keep thinking it’s somewhere in the electric/spark. It should detonate. CDI, ground, stator? Timing? While you’re looking at the cylinder, double check the timing while you’re at it. TDC and all that. The reason I asked about wet plug was to check for fuel getting to the engine. Later - Have you adjusted anything on the carb? Talking with two guys in the shop who have lots of experience with the People, they say the carb is VERY temperamental. That's exactly why I'm at a loss jbj, with spark and fuel I'd think it would at least detonate once. I did some minor tweaking to the carb, just the regular starting point settings. But again, even with fluid in the chamber it still won't fire. I guess the spark could be too weak but it's firing pretty consistently. Would a bad CDI still allow for spark but not let it detonate?
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Post by jbjhillbilly on Jun 16, 2020 22:56:20 GMT -5
The reason I brought up weak spark is I had that happen recently when I was working on a bike. Wouldn’t start, so we checked spark. Sure enough you could see it, and it seemed decent enough, but when we changed the plug out to (another) new plug, it fired right up! Damn gremlins.
CDI is just an easy thing to swap seeing as you have another hanging about. And no, it shouldn’t spark with a bad CDI, but a funky CDI might just be enough to cause problems. Or if someone tried to derestrict them by cutting the body and did it wrong (there is a legit mod for that w Kymco).
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Post by lilpinny on Jun 16, 2020 23:23:33 GMT -5
I find that if you stand, use your pointy finger and give it a good cursing it’ll fire up when threatened with being thrown in the river.
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Post by wiscootsin on Jun 24, 2020 20:37:51 GMT -5
On a crappy china scoot I had weak spark until I swapped the voltage regulator, then it fired up.
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Post by matlock on Jun 24, 2020 20:46:40 GMT -5
you def put the piston rings on and the arrow facing down?
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surferfratt
Scoot Junior
NorCal surfer w/2 as yet running Kymco People 50's
Posts: 16
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Post by surferfratt on Jun 28, 2020 13:40:59 GMT -5
you def put the piston rings on and the arrow facing down? Fairly certain I did but now you guys are making me second guess myself. Hate to pull it all apart again. But too many projects so haven’t gotten back to this one. Did look for the CDI but didn’t see it at first glance.
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Post by Mech Warrior on Jul 10, 2020 20:00:31 GMT -5
Hello surfrat Welcome to the Forum .Have you made any new progress sir?
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