GP 150 starting problems

[courtjr]

Hi there

I've had trouble starting my GP150 sicne been on the road since march.
the details is its a gp150 with 150 top end which has been ported to stage 5 size ive have been told by my friend who built the engine for me. its running a 24 mm dellorto phbl rubber mouted carb and a scoot rs sport race pipe.
ive already checked the pick up box is lining up withte flywheel pegs but ive notcied when it first started the lights were bright but now since they are dim i dont know if this would have anythign to do with it.
but i woudl like some points from anyone on where look next and try open to pointers
engine
150 top end ported stage 5 "been told"
LI crank
scooter resurrection LI/SX 12V kit
scoot rs pipe
gp gearbox and clutch
timing is 21 degrees, been told li run better at 17 to 19 degrees if true.
24mm PHBL dellorto carb rubber mount standered polit jet 85 main jet mixture screw is at 2 turns.


symtons
wont start when cold with or without choke
will start rev for 1 to 2 seconds and cut out and wont start for 5 to 6 kicks
when its hots 1 to 2 kicks without choke and will start

many thanks

[coaster]

Hi there

I've had trouble starting my GP150 sicne been on the road since march.
the details is its a gp150 with 150 top end which has been ported to stage 5 size ive have been told by my friend who built the engine for me. its running a 24 mm dellorto phbl rubber mouted carb and a scoot rs sport race pipe.
ive already checked the pick up box is lining up withte flywheel pegs but ive notcied when it first started the lights were bright but now since they are dim i dont know if this would have anythign to do with it.
but i woudl like some points from anyone on where look next and try open to pointers

many thanks

You'll need to post a LOT more details to enable anyone to help. For a start, what are the symptoms? Choke on or off? hot/cold starting?

Does it have a filter fitted? What jets/needle/slide fitted in the carm?

The reason is that it coiuld be a million things and we need to narrow it down a bit

The lights and the ignition are seperate systems but your dim lights could indicate a poor earth maybe.

[courtjr]

Hi there

I've had trouble starting my GP150 sicne been on the road since march.
the details is its a gp150 with 150 top end which has been ported to stage 5 size ive have been told by my friend who built the engine for me. its running a 24 mm dellorto phbl rubber mouted carb and a scoot rs sport race pipe.
ive already checked the pick up box is lining up withte flywheel pegs but ive notcied when it first started the lights were bright but now since they are dim i dont know if this would have anythign to do with it.
but i woudl like some points from anyone on where look next and try open to pointers

many thanks

You'll need to post a LOT more details to enable anyone to help. For a start, what are the symptoms? Choke on or off? hot/cold starting?

Does it have a filter fitted? What jets/needle/slide fitted in the carm?

The reason is that it coiuld be a million things and we need to narrow it down a bit

The lights and the ignition are seperate systems but your dim lights could indicate a poor earth maybe.