GY6 200cc Starting Questions By xbirdpgo (Read 656 times)

[xbirdpgo]

Hi all, first post here on the forum, hope you guys can help me out.
I own a 2008 PGO G-max 200cc Taiwanese scooter, it has a GY6 engine in it. 

I owned this scooter for 2 years, it has around 45K km on it, I replaced all the belts / pads / oil / cleaned the carbs/ etc once I bought it, there has been something wrong recently when I start the scooter. 

I remember when I had the bike for the first year, when I hold down the brake lever and hit the start button, the starter will kick in and I just need to give it a little throttle, then the scooter starts. 

now recently, when I hold down the brake lever, press the start button, nothing happens, the starter doesn't kick in / move at all, not unless I turn the throttle, then the starter will kick in and the scooter start. 

Then one day the battery died when I stopped for a red light.. so I thought "oh it's the battery", anyways, a brand new battery is replaced, but STILL the same problem exists.. 

what is wrong here? the scooter runs fine, starts fine.. but that's just weird isn't it? I need to give throttle in order for the starter to get electricity to kick in? 

can somebody think of what the problem is? the starter? the stater solenoid? 

many thanks!

[trashtruck12172]

when was the last time it had a really good tune up ( valve adj, timing etc)?

[Alleyoop]

It could be as simple as the start button is not making contact with the ground wire to complete the circuit to the solenoid. So by just moving the throttle it moves inside a little and makes contact.

Have to ask, does this scooter have a ECU and EFI or is it just a carburated PGO? The carb could also have a Throttle control sensor on the side of the carb that may need to be adjusted. The sensors do have a little bit of adjustment to them.

[xbirdpgo]

Thanks guys.
I did my valve adjustment around 2 months ago, bike runs fine.
It runs on a carb, not efi.

There is a throttle sensor, let me try to adjust that and see if it works.

As for the ground wire on the start button, any idea how I can check that?

Many thanks~

[Alleyoop]

Only way to check the button is to open it up usually 1 or two screws hold the halfs together and then split it open and check the switch to see if it is making contact with the ground.

[xbirdpgo]

Great thanks!

Let me have a look tonight.

But to educate more, how does turning the throttle helps the ground contact??

[cyborg]

i think Alley is on it,,,there's something going on with the starter switch

[Alleyoop]

When you turn the throttle it may be moving the wires which are right there Don't forget the Throttle control wheel is inside there right next to the wires so it may just be that twisting it is moving the wires and helping make contact. Just a shot in the dark since it is DEAD unless you twist the throttle a little for it to send juice to the Solenoid.
We all know twisting the throttle has nothing to do with voltage being sent to anything so suspect something is being moved when you twist the throttle a little.

Some of these things you have to think out of the box
Alleyoop