auto bystarter?

[chaz35]

I have People 50 2T that is having issues.  It starts OK, but as soon as it warms up can't give it any gas or it will stall/ die.  Then it will start right up again after a short while.  It will also run OK, if you let it idle awhile, but will soon stall/ die if you give it any gas.  It acts like it's not getting gas or maybe too much gas?  If I open the carb drain, gas will flow out OK.  My main suspect is auto bystarter.

When I 1st got the scooter it ran OK, and drove it around the neighborhood a little no issues.  I had to work on it a little to get all the lights, blinkers, horn to work so I could get it inspected.  The auto petcock was bypassed, so I hooked it up and was not surprised it didn't work, so I bypassed it again.  I also installed an air filter, it didn't have an air filter (made my own out of some Uni bulk filter material, works great).

I took the carb off to clean and noticed the piece between the carb and intake manifold was backward, so I thought that was the problem, an airleak, easy fix.  I cleaned the carb and installed a larger main jet, 75 to 82 and put it all back together.  To my surprise, there was no difference, still had same problem.

My question:  I also have a 2003 Super 9 LC and was thinking about swapping the auto bystarter from the Super 9 to the People 50.  I checked the part numbers on Kymcospareparts and they are different, but look the same.  Anyone know if Super 9 bystarter will work on People 50?

I also plan to check the pulg wire at the plug connector.  I noticed this can be a problem sometimes, and just want to eliminate this possible issue.

Any comments welcomed.

[BettinANDlosing]

The by starter should swap no problem from the s9 to people. But honestly that does not sound like you're problem. Did you double check the idle jet was clear? You want to see a pinhole of light through it. Also what do you have your mixture set to? If the choke was bad most likely would be very hard to start, then run good once warm. Just to clarify that carb spacer you want the oring facing the intake manifold, and if you got itupsidedown it'll block half the intake. Sounds to me like the idle circuit is still clogged somewhere. I've been doing carb cleans on scooters (prolly more than 1000 kymco 50cc) for more than 6 years and every once and a while will have to go back in and clean the idle circuit twice. It has very very small fuel passageways that don't always get clear on the first try. Use wire and carb clean to do the idle jet again and set the mixture to 3/4-1 turn out. Closer to 1 if its cold, closer to 3/4 if its warn (air temp). Let us know what you find buddy.

[BettinANDlosing]

One other thing, if you have the carb off rather than swap choke just take the people one off and hold it on your battery for 1-2 minutes. The brass part and needle should move down noticeably, i mark the brass with a sharpie where it's level with the bystarter plastic for a reference mark. Green wire is ground (-).

[chaz35]

Thanks for reply, you are correct, was idle circuit.  I went out and messed with it some before tearing it down again.  It was doing the same, but would run pretty well with a lot of throttle, so I rode it around some, seemed to get better.  I already put 1.5 oz Seafoam in the tank gas, maybe it was helping.  Then I adjusted the mixture screw, was at 1.5 turns out, seemed to do better closed, so I set it at 1/4 turn out.  I actually think it runs pretty well now.  With the auto petcock bypassed, I don't have a fuel filter, so that's part of the problem.  I'll add an inline fuel filter tomorrow.

I guess it's time to order some parts:  speedo doesn't work, auto petcock failed, both brake handles ends busted off, a few nuts and bolts missing.  After   I get all that fixed, then new tires, maybe a pipe, and cvt mods.  I want to see how well it will run before adding a pipe and modifying the cvt.  Seems to run pretty well already with just the cdi unrestricted, carb rejetted, and maybe cvt boss drive unrestricted?

Thanks for description on how to test auto choke, I will try that sometime when I have the carb apart again.

Cheers

[BettinANDlosing]

How did you bypass the bystarter? You have to do it correctly, if you just unplug the wire the choke is stuck ON!!! You have to take the cylinder and needle off the byatarter and set them in where they go, then use rubber or cardboard to hold those downwards, sandwiched between the body of the bystarter and the cylinder/needle.

[chaz35]

Sorry for confusion, I meant the auto petcock for the fuel tank is bypassed.  The auto bystarter is connected and functioning properly I think.  Thanks for description of how to bypass auto bystarter, I am starting to understand how they work.

Seems like a manual choke would be better, but when they work properly it's pretty cool.  I guess auto petcock is the same, but on both of my scooters they don't work and a manual on/ off valve seems very appealing (simple is better).

I like the Aprilia SR 50 scooter a lot, but would much rather have a Kymco Super 9, less complicated IMO (no fuel injection).  I figure if fuel injection doesn't work, it's an expensive trip to the scooter repair shop.  I like being able to work on it myself.  Cheers

[BettinANDlosing]

Ahhhh my bad man i read it too fast! That's cool, as long as your float needle works good you don't really need a fuel valve. I rocked open for years and never had fuel in my oil. The SR50 is pretty cool, but I'm with you on the fuel injection. It's a major pita when stuff goes wrong. Also the main perk of efi Is the fact that there is no carb to plug up when it sits for long periods. Butttt, EVERY Ditech engine I've ever worked on that sat around needed a new fuel pump ($200-$300 if you can even find it), and possibly more. Aprilia SUCKS at choosing what fasteners to use, just to take the plastics off any of their scooters you need a minimum of 4 different size Allen keys, Phillips, multiple sockets (Italians like using 13mm for some reason), torx, and sometimes flathead. If you can't tell I'm not the biggest fan of Italian design, LOL. The SR works good when it's not broken, but the way they designed the thing it's almost impossible to hop up as much as almost any other 2t scooter engine, and the performance is about the same as a Kymco 50, the LC s9 is in fact faster. Another gripe i have with the Ditech, they sound awful, the injector and air pump make a loud ticking you can hear over even an expansion pipe. It's a classic example of pointless Italian over-engineering.

[zombie]

Should have seen these before X-Mass...   https://www.highgaintuning.com/

[BettinANDlosing]

Not bad

[zombie]

I'd still like to have one. (sr 50).

If I ever find the right buyer for my ZX, that dough might just turn into one. I've kept touch w/ Rich (HGT) over the years, and he has Plenty of cool bits to build a 70mph 70cc bike.

Different strokes...

[BettinANDlosing]

I'd still like to have one. (sr 50).

If I ever find the right buyer for my ZX, that dough might just turn into one. I've kept touch w/ Rich (HGT) over the years, and he has Plenty of cool bits to build a 70mph 70cc bike.

Different strokes...

Italian hahaha

[zombie]

EEtaleeanno...