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Post by dannytroy on Jul 19, 2014 13:58:23 GMT -6
OK, problem solved. Turned out to be the starter after all. The replacement starter starts the scoot in a second or two, with no hesitation. I returned the lithium battery I bought on Amazon, so I'm only out the $50.00 for the new starter. Nice to know I can go anywhere and not worry about it starting.
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Post by dannytroy on Jul 18, 2014 7:29:00 GMT -6
Yes, I had seen that assortment already. I'm in the store almost every week, and was passing by one today, but I thought the crushable type would be a better bet. Funny, the eBay order was about 4.00 for the 10 pack, and $5.00 shipping! That was the cheapest I found.
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Post by dannytroy on Jul 17, 2014 21:05:34 GMT -6
Does anyone know the size of this copper washer, or who has it online. I went to a very good auto parts store today, and they didn't have anything that small. I made a washer out of some flat copper I had and it's leaking slightly. I guess I need a "real" washer.
Disregard..... I just found them on eBay.
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Post by dannytroy on Jul 15, 2014 15:28:16 GMT -6
OK, I dodged the head gasket job. I was poking around, trying to see where the chromed coolant pipe runs to, when I brushed up against a coolant hose. I started hearing a gurgle, and realized the hose had come completely off the fitting in the block and coolant was pouring out. This is the lower hose, under the carb. I saw the hose clamp dangling there, and thought the guy at the factory had completely forgotten to tighten it. A closer inspection showed he had probably tightened it too much, and it snapped. I guess the low quality hose clamps can take too much tension before they snap. I replaced that one and the other hose at the block with high quality hose clamps.
While I'm adding coolant, I thought I'd add a copper washer on the drain plug. They had silicone there, with no washer. Should be a copper washer, if you ask me.
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Post by dannytroy on Jul 14, 2014 23:00:25 GMT -6
Just saw that you need to make a "normal reply" to add photos. Here they are:
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Post by dannytroy on Jul 14, 2014 22:57:32 GMT -6
Sorry, I guess I forgot to attach the photos. Exactly how do I attach an image? I don't see any way to attach, only a way to add a link.
I did a little more investigating tonight. I turned the garage lights off and used a flashlight to illuminate the area in question. It looks like the area around the head gasket is clean. The leaking area seems to be lower on the cylinder/block. It's hard to see exactly where the leak is, will all the associated parts mounted, blocking the view.
The chromed pipe that attaches to the block, below the starter, what does it do? Does it carry coolant to the block? I see copper washers on it, so I'm assuming it likely carries coolant. It may be leaking also.
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Post by dannytroy on Jul 14, 2014 9:29:18 GMT -6
Well, while waiting for a replacement starter I thought I'd remove it and be ready to install when it comes. I found what looks like coolant leaks coming from above, as you can see the streaking on the block. I also see some coolant leaking from the drain bolt, although it may be making it's way from above and winding up at the lowest point. My fear is a bad head gasket. Do these photos suggest anything to anyone with similar issues in the past? The scoot has less than 300 miles on it. I'm beginning to like my air-cooled 50cc TaoTao more and more!
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Post by dannytroy on Jul 13, 2014 14:53:58 GMT -6
Yes, at that point its the starter does not have enough power to get past the compression stroke. Alleyoop That is exactly what it feels like. I was wondering if there is something that lowers the compression to allow easier starting, that isn't working. Anyone know if these scooters have such a system? I'll try the jumper cables with the car battery, but I'd bet it will still be the same, which will further point to a bad starter. I ordered a new one on eBay, and it looks like they are all generic, with no "heavy duty" type available. It makes me mad since it runs so good after it starts. Also, it only has a few hundred miles on it, and I shouldn't have to be going through these problems so soon.
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Post by dannytroy on Jul 12, 2014 21:02:27 GMT -6
OK, I got the new lithium battery installed and guess what...... it does the same thing. It just can't crank the engine when hot. If it would give at least one or two revolutions of the piston, I know it would start, but it doesn't have the torque to do it. The battery is at about 13 volts, and when depressing the starter button it drops down a few volts. I'm trying a new starter next. Funny, I replaced the factory battery with an AGM battery, and now with a lithium. If the replacement starter fixes the problem, I probably could have stayed with the factory battery.
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Post by dannytroy on Jul 11, 2014 19:42:06 GMT -6
Guess I'll just wait and see how it does with the new battery, which should be here in a few days. The starter isn't too expensive, so that will be next on the list of things to replace. I'm glad that otherwise it's a great running scooter.
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Post by dannytroy on Jul 11, 2014 7:40:52 GMT -6
Yes, I replaced both of those wires. The one to the solenoid and the other to the starter. The ground wire is solid, but I didn't upgrade that one. There's plenty of cranking power when the bike is cold. It's only weak when it's hot. I'm very anxious to see how well it does with the new lithium battery. From my years flying r/c planes, going from nicad, to nimh, to lithium, I know how much better lithium technology is. Hopefully it will work as well on the scoot.
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Post by dannytroy on Jul 10, 2014 14:51:10 GMT -6
Well, I upgraded the R/R, went with a "better" battery, ungraded the wiring from the battery to the starter, and I'm still having problems. The scoot starts fine when cold, but when hot it doesn't seem to have enough power in the battery to turn the engine over. I ordered a 220CCA lithium battery and I'm hoping that solves the problem. The voltmeter shows it at about 12.5 volts when trying to start, but after holding down the starter button a few seconds, it drops down to 8.5v under the load. Goes back up to 12 or so volts after I let go of the starter button.
I'm thinking: 1. The battery just doesn't have enough cranking amps to start the engine once the compression has increased, do the the hot engine, or 2. The starter, which BTW is very hot to touch after the engine warms up, is on it's way out.
Jumping the starter solenoid doesn't help.
The voltmeter (which replaced the am-fm radio I never used) shows good charging. I switched to a Oregon MP R/R, and the charging voltage is very good.
Any ideas on what the problem is?
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Post by dannytroy on Jun 30, 2014 7:34:03 GMT -6
Well, it's still charging fine so I guess I'll leave the R/R where it is and hope for the best. I may remove the shell again to check the thermostat, since it's getting way up on the temp gauge in hot weather, and I'll have another look at the R/R location then.
I decided to add an illuminated voltmeter where the radio interface is now. I never use the radio, so I'm disconnecting it, and will use that location for the voltmeter. It will be nice to always know how the charging system is working. I'll hook it to a switched 12 volt lead, so it reads when the key is in the on position.
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Post by dannytroy on Jun 28, 2014 22:58:42 GMT -6
Yes, that's pretty much how I did the other two seats I added gel pads to. I never used the smoothing foam, but since it comes with the gel kit I ordered on eBay, I will use it. I hope there is enough foam to gouge out at the rear of the seating area, to accommodate the foam thickness I bought. The original seat looks kind of thin there, and my butt agrees with me. Exactly where the most padding is needed is where it's the thinnest. Hopefully the gel will fix that problem.
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Post by dannytroy on Jun 28, 2014 8:47:04 GMT -6
I just ordered a gel pad (with smoothing foam) from an eBay vendor. I did two other smaller scooters in the past, and was happy with how they turned out.
Has anyone done a similar upgrade on the YY250T? I have a 2013 model, with the added hump on the seat, which I will retain. I plan on reusing the seat cover and will cut out the necessary foam to fit the gel.
Any thoughts on this project?
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