Clinician
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Joined: Jun 25, 2014 7:04:08 GMT -6
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Post by dannytroy on Jun 27, 2014 8:21:50 GMT -6
Well, I solved most of my problems yesterday. On a whim, I thought I'd check for a spark, when it died on me again. Since I had used an Iridium plug, I thought it could never be the plug, and it was. I put a good old NGK back in (I still had the one it came with) and the scoot came back to life. I guess the Iridium was crapping out when it got hot. I took the scoot for a long ride and it was near 100%. I still get some hesitation, but hopefully adding some Seafoam and fresh gas will help that.
There is still some starter hesitation, and I suspect the starter may be on it's way out. I also installed a much heavier gauge starter wire yesterday (positive and ground) and the starter is still weak. The charging is great with the Oregon MP R/R, and my battery is showing good voltage when charged with motor off. As long as it turns over it will suffice for now.
So, I'm ready for that cross-country ride. OK, maybe cross-county for now. I just ordered a gel-pad for the seat modification. My back aches after only about 1/2 hour ride with this scoot. I installed gel on two other scooters and was always happy with the results.
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Clinician
Currently Offline
Posts: 48
Likes: 9
Joined: Jun 25, 2014 7:04:08 GMT -6
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Post by dannytroy on Jun 27, 2014 6:56:55 GMT -6
I installed gel pads on my prior scooters, but see that doing the upgrade on the YY250T might be more difficult, since it has the multi-level feature. Has anyone done a mod to this seat?
Funny, exactly where the most padding is needed, is where the padding is the thinnest on this scooter. It looks great, but isn't very functional, especially when you're a 63 year old rider!
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Clinician
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Posts: 48
Likes: 9
Joined: Jun 25, 2014 7:04:08 GMT -6
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Post by dannytroy on Jun 25, 2014 22:15:56 GMT -6
Ok, I hope I can get some suggestions to the problems I'm having with my year old YY250T (Helix clone engine), with only a few hundred miles on it.
I've been having problems, where after the scoot gets hot, it stalls and can't be restarted till it cools. At first I thought the battery was bad, since it was the usual low quality battery that came with the scoot, so I replaced it with a good quality battery. I had the same problem with the new battery. It seems like there are multiple problems going on. After it warms up the engine seems to bog and it sounds like the carb is running rich. When I turn off the engine it almost doesn't want to turn over. I actually took it for a 15 minute ride a few night ago and broke down. It just lost power and anything above idle caused it to stall. My wife came to my rescue, and brought a spare battery. I thought that the battery had been drained, but the replacement battery also would not start the scoot, with the same hesitation when trying to start. To me, it seems as the the compression is too high when the scoot warms up, and the starter isn't powerful enough to crank the engine.
Let me go over what I have done to the scoot so far:
1. Replace battery
2. Replace head and taillights with LEDs
3. Added an on-off switch for the cooling fan, thinking the fan may be draining the battery
4. Installed a new R/R from Oregon Motorcycle Parts (this solved the low voltage problem at the battery I had been having)
5. New fuel filter
6. Iridium spark plug installed
7. Tonight I took out the wires that feed the starter and will replace them tomorrow with a heavier gauge wire
8. Adjusted the valves today, thinking they were too tight. No change.
When disconnecting the wire at the starter tonight I noticed it was very hot. To hot to touch. Is this normal? Is the fact that it doesn't want to turn over the engine when hot a sign that the starter is bad?
I made a little video tonight so you can see exactly what I'm describing. You will also see the bogging when giving it throttle. This time it didn't die on it's own, and I was able to restart. I'm wondering if the fuel filter replacement I did tonight might have helped.
Here's the link:
Hopefully someone can shed some light on these problems.
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