Sounds like vaccum leak while its trying to run spray a bit of carb cleaner on areas like throttle plates, intake boots, etc etc. Is this liquid...
Oh he does beleive me find him on a post and pm him he will send you parts info prices how to thing, the shelfs I found were several yamaha...
Check these first look at the connectors to the coils plastic ones, disconnest see of contacts are well loose fitting if so use small dykes to...
Also dont boil the carbs again go and get a can of parts cleaner comes in 1gal size paint can Soak them ounce stripped and use your air compressor...
Speffic to the engine there is a chart to follow in service book will tell you what shims u need. You will have to check them first, markem then...
You have to remove build a level stand and wetset off the bike.
Helps here my freind. And I cant help but feel I owe the community thanks to these cats. When you think you have enough information, believe me...
Yeah half ass don't cut it dude, Valves are important before going forward you must you must do them then on to carbs, big fitz knows what hes...
After the u tube video and info from xj4ever.com you should become very familar with them, but if you would humor me for a second pull air box...
No it wont you will need to take apart, now you need to get a jap screw driver, dremmel, the screws are peened and will need to be cut off ground...
New business venture? Id buy the for 39.95 4 them get the equipment everyone here would probably buy them to, great tank labels id say.
Yes that one sorry must be from all pot I used to smoke.
Also look at maxim4ever.com
It is and you will find few orings that may be the issue and is the proper way to clean go to xj4ever.com see there carb clinic post will show you...
Threaten to throw her off a cliff worked for me. After I did that came to life :-) how ever that said go back to the pilot jets, then when you do...