ET2 Bogging down at 20-30mph fine afterwards

[chuftonic]

Hello all, this is my first post so here goes.

I had a ET2 which was recently stolen by some little **** and it powered right through to 50-55.
I am not an expert by any means but it was obviously de-restricted and had a GIANNELLI GO exhaust (is that a performance exhaust?) and i am trying to re create this performance.

I bought another ET2 yesterday, and although it will reach over 40 it bogs down when it hits 20 and then picks up again at around 30.
It is particularly noticeable when going uphill, and i feel vulnerable to being knocked off by other road users.

It will only let me twist to full throttle when it is above 30 - and can only go to half throttle until then as it slows down a bit if I do twist all the way, which makes overtaking a bit tricky.

Having researched the symptoms I think that it is running too rich and I need to adjust the needle clip setting?

Also it has the standard Jet of 35? would it increase performance if I increased the size and by how many points, and what else would I need to do if I did this.

I am not a mechanic but I do know one and will be attempting doing this myself - at his garage however!

Any advice gratefully received.

Thanks.

[henri]

if you increase your main jet size alone it will make the scooter bog worse ,if you undo carb top an pull slide out an see which needle clip positions it on , an drop it by one ,as in move the clip one groove upwards , stick it back in carb an take scoot for a blast an see if it improves . if better but not perfect drop another clip position , if you run out of positions/grooves on needle you'll have to get another one , H

[chuftonic]

May 3, 2015 13:46:54 GMT henri said:

if you increase your main jet size alone it will make the scooter bog worse ,if you undo carb top an pull slide out an see which needle clip positions it on , an drop it by one ,as in move the clip one groove upwards , stick it back in carb an take scoot for a blast an see if it improves . if better but not perfect drop another clip position , if you run out of positions/grooves on needle you'll have to get another one , H

Cheers H, I will give it a go.
Do you know where you can get bigger? needles from.

J

[henri]

most scooter shops have auto sections , beedspeed,allstyles, sip, H