Trouble starting cold By feha (Read 553 times)

[feha]

I have been trouble getting my 50cc GY6 scooter to start cold.  A bit of carb cleaner in the intake does the trick.  Runs great and between 30-38 mph top speed depending on its mood.  Starts again after a short break consistently but, once it cools down it won't start again. 

When it won't start it doesn't matter whether its kick started or electric started.

Ive been all over getting this (new to me, very few miles, but 7 years old) scooter to start for me.  I got a new battery, got a battery tender cause all the attempts to start drained the battery, cleaned the carb, put in and verified a new spark plug, changed oil and tranny oil. 

When it won't start I can take off the automatic choke and stick my finger over the hole and it starts no prob.  I verified that the choke works and it does.  The pin on the choke starts at 3/4 inch or so and extends up to an inch.  Resistance across the leads is 24 ohms.  Seems really high! Maybe the choke is the wrong kind for the carb? Though I have no idea how to check.

So what the heck!?

Im thinking MAYBE I failed to get something out of the carb?  But its really clean inside.  I think the guy that sold it to me put a new one on. 

I don't have a gauge to check compression.  I would have to take it to a shop or buy one. 
 

I don't have vacuum hoses to check.  I see a bunch of posts about that. Some people enjoy sucking on them. The petcock sits at the tank and runs directly to the carb through an inline filter.  I suppose I could try changing out that filter?  Though gas pours out when I detached it from the carb so gas is getting to the carb.

Doh.  Owning a scooter is pretty fun...

[FACE PLANT FOR LIFE]

Yikes, that is incredibly frustrating - What is interesting is that you said you can put your finger over the hole in the automatic choke and it starts no problem... Do you know if the bike is running lean or rich? Maybe your air-fuel ratio is off enough to where it doesn't like to start cold? I would mess around with that a bit.

[Alleyoop]

If you can cover the ENRICHER's hole and it starts probably the enricher is not sealing around the hole if it is retracted when pulled out cold. So I would make sure the RUBBER O-RING is on the enricher which is what seals it. It is most likely leaking and that is why it does not feed the extra fuel for cold starts. It could be the previous owner put on the wrong enricher.
Alleyoop

[feha]

Alleyoop that's an apt handle. You threw it up and I knocked it down. Turns out the clamp was bent allowing some air in through the auto-choke. Bending that back into place worked like a charm. So, I took the scooter to the auto parts store and picked up some grease to seal the deal. Thanks! J

[Alleyoop]

FANTASTIC!! Glad I was able to help and it was an easy fix.
Alleyoop