Good evening all.
New rider on the block so please be gentle lol
I bought a 97 gas gas JTX 270 about 2 months ago and have done roughly 2 tank full before the bike struggled to idle without a little reving. I took the bike to my local specialist and he stripped most of it down and cleaned it and that still didn't solve the problem. I changed the carb today for a good second hand carb with throttle etc full cleaned and stripped and fresh tank of 70:1 mix. The bike started first kick but the idle was all over so I have adjusted the fuel screw to 3-3.5 tuns out from fully in and tried to adjust the idle screw to suit. The bike idled well for short while and then the fan kicked in for a few mins then a little water via the cap run off and now it won't start at all.
The carb is full of fuel, I have compression on the kick start, and I have a spark at the plug but not sure how strong it should be?
any advise would be really appreciated,
thanks nath UK