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Topics - marietta_ken

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Technical | How To / Where to connect vent opening on fuel pump?
« on: September 26, 2013, 04:19:36 AM »
My 2005 People 50 came to me with an aftermarket fuel pump that I've confirmed as bad. That pump has only 3 fittings -- Vac, Fuel In, Fuel Out. I'm replacing with the OEM Kymco pump/filter combo. That unit has 4 fittings. As best I can tell, the 4th is a vent of some sort. Do I need to connect that to something? I don't see a stray line left around unconnected from previous owner's install of aftermarket pump. What's that venting, anyway?

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People s150 / Dang it! Going backwards with electrical issues
« on: September 22, 2013, 04:39:20 AM »
Bought a used, not running 2007 People S 125 recently. Prior owner advised that battery was not charging properly and the bike had been sitting for a couple of years. I brought it home, cleaned the carb and got it running very nicely. Just needed to dial in idle and pilot adjustment before moving on to the charging issue.

Cutting to the chase, I now don't have a flippin' spark for some reason. The following is the sequence of events:

While trying to dial in the carb adjustments, I had some real problems getting started when the engine was cold. LOTS of turning it over, throttling and such. Would ultimately start, then bog it's way up to running nicely after a couple of minutes. All this starting was done via jumper cables to a large marine battery I have in my garage. That's been working well along the way to getting this thing running, so hopefully nobody tells me that is a problem. Once the bike was running, it would fire right back up if switched off.

Once I had it started, I proceeded to take a reading at the battery terminals to see if the voltage would rise to the rated 13.5-14.5 Vdc when throttling up. It didn't. There was no change. I checked AC voltage across yellow and pink wires at the Regulator/Rectifier (which I just replaced based on measurements I took on the previous one). The AC voltage did change, going up to about 17 Vac with throttle. I took that as a good sign that the Stator was doing its thing pretty well -- though I don't know if that level is acceptable. I did some power off measurements on the charging system and everything seemed to be good/within spec, though still not getting the expected charging voltage.

Tried to start from cold (sat about 30 min). Just kept turning over, but no fire.  I decided to put in a new plug in case I had fouled the original with all my carb messing. That's when I discovered that I had NO spark. Measurements of coil seem right, though cranking doesn't seem to put a voltage to the coil.

So now I'm wondering why I can't get the bloody thing started -- or even firing. Did I kill my CDI? Is my Stator showing that it was bad all along??

I'm at a loss and getting frustrated. Need to figure out next move to make.

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People 50 / Fuel POURING from exhaust? Reed valves bad?
« on: September 19, 2013, 03:48:14 AM »
Bought a non-running 2005 People 50 recently. When I picked it up, I saw a puddle of fuel/oil that had dripped (and was dripping) out of the AIR filter. Tried to kick start it and raw fuel/oil mix was spurting out the exhaust. Picked the bike up into a wheelie position to try to dump the excess gas from the exhaust, only to have a steady flow of fuel pouring out of the exhaust. Didn't seem it was going to stop, so just put the bike back down.

Some research led me to think I probably had a float valve stuck OPEN, allowing fuel to just keep on flowing through. Figured I'd take this to a pro to get the carb all cleaned up nicely and just get the scooter freshened up overall. The mechanic I chose is more a motorcycle guy, but does some work on scooters as well.

Anyway, I got word today that he put it all back together after carb cleaning. Tried to start it and gas was spewing from exhaust. Now he says the reed valves are toast. Any chance that could be it based on the aforementioned symptoms? I've googled tons, but not found any clear correlation between bad reed valves and fuel pouring out of exhaust. After all the research I've done, I'm wondering if that might be a mis-diagnosis. Seems like carb would have to let the fuel through for the reeds to even come into play. Also, I'm wondering if the fuel pump might be toast and letting fuel flow continuously into vac line then cylinder. It's an aftermarket one... I'll ask him and have him check on that tomorrow.

So, any chance this is a bad reed valve problem?

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