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Cold starting! PGO T Rex150 scooter just will not start when cold

I am an ex mechanic playing with bikes since I was 8! this is driving me mad, I have a Pgo 150 scooter that will not start when cold uless you take off air intake and choke with your hand!
I have changed the cold start solenoid twice now it heats uo and moves but it just will not start. When the bloody thing is warm it runs sweetly! It has got progressively worse since I had it sometimes it will start by tweaking the trottle to get it to fire then leaving it 10 mins flooding it really! I have just been pulling my hair out !!! so another head might help! I live in Corfu by the way so its the time if the year to start using it now!

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Solenoid needs a diode across it with stripe on positive side.

can be a vacume air lock try open fuel cap to start cold to see if starts?

or sounds to me that the orfice is to small on the cold start port or dirty ...not enough fuel due to your hand choking

other is a air leak between carb to intake valve/port

when engine running spray some WD-40 around intake gaskets to see if rpm picks up if do its leaking

Posted on Apr 26, 2009

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Hi there,
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Posted on Jan 02, 2017

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