Flat spots/stuttering

[Rkel1988]

Evening all. Back with another problem! When starting my bike i start it up put my helmet and jacket on gloves etc jump on engage first gear and when i go to pull away it seems to go “flat” stutter then when i change into second its fine also sometimes cuts out if i rev it in first then come to a stop. Once bike is running it seems to be fine albeit the odd cut out at lights when idling. I changed the oil to castrol 10w40 and it needed a new coil pack as well which i have since replaced. Any ideas? P.s its fuel injected

[skyrider]

hi how old is the bike

[Rkel1988]

Sorry its a 2018 done around 6000km

[skyrider]

strewth that coil didnt last very long

[Rkel1988]

(Please dont shout at me) its a mutt mongrel 125cc built in sunny china

[skyrider]

but even so you would have thought it would have lasted longer then that its only a year old and 3728 miles

Edited August 19, 2019 by skyrider

[Rkel1988]

It burnt out when i was gunning down the a1 for about an hour flat out at 60mph

[skyrider]

when did you last service it plug -filters etc

[Rkel1988]

It was last serviced at about 4/5000km i changed the oil when i got it. So only done probably 1500km since last service

[skyrider]

right so thats nearly a thousand miles, i would start with taking the plug out and give it a clean with a wire brush and check the gap with a feeler gauge

[Rkel1988]

Okay will give it a going over tomorrow let you know the result. Cheers for the advice

[skyrider]

and have a look at the air filter as well

[Rkel1988]

Just had a quick look at air filter. Clean as a whistle apart from this oily patch? Cause for concern? Or normal?

[skyrider]

no i reckon that should be ok for a while

[skyrider]

ts a big filter though, is it a round one

[Rkel1988]

Yeah round and hollow

[skyrider]

it looks a big one for a 125 is it standard

[Rkel1988]

Yeah standard the bloke who owned before me barely rode it.

[linuxrob]

does that spot line up with carb throat?, please check you valve clearance. you should find the spec on the net. It looks like a Suzuki GS125 clone motor.

Valve clearance (when cold) GS125

IN.: 0.04-0.07 mm EX.: 0.13-0.18 mm

Rob B