Reply To: Carbs removal GV250 2004/5
Hi Marcel. Thank you for the replies to my questions. Very helpful.
I have one anomaly with my carbs – the back one has a main jet 87.5, and the front 90!! Reading all the articles I can on your site, it seems it should be the other way round. Should I just leave the 90 in the front and buy a new jet for the rear, and if so, what size?
Secondly, I wont do anything unless I can get the black tar and gunk out. The carbs are a mess! Can you suggest a dissolver that might work? I will try to find somewhere with an ultrasonic bath but don`t know if that would work.
Thank you again for your help.
Mike
Hey mike,
if you had seen the Jetting tutorial, you will be okay to use 92.5 front and 95 rear.
87.5 is very lean for the 250 but it was done by Korea as some countries have emission laws for imported bikes.
In my opinion, the bikes should be 92.5 and 95 because a factory made GT250 uses those jets straight of the factory.
However, make sure mixture is 2.5 full turns out from closed on both carbs. Never touch this ever again forever (regardless of bike’s mood or engine woes)
Factory mix is usually around 3 turns.
Do you know anyone locally that fixes bikes ? They should have an ultrasonic bath machine and they will do it for you, it usually works unless there is serious rust on one of the carb parts inside the body.
If its just black goo , tar, it will usually come away eventually , consensus is that we tend to clean the carbs hard twice with a sonic bath , and finally an air compressor (as per service manual)
// Meditation doesn't mean you have to sit still....
