How do i adjust carb on 1994 vulcan 1500, do i put screw all the way in then how many turns out shoud i go. its backfirein when i let off gas and sometimes when im cruisin, but idles fine, not bad gas done it on last 3 or 4 fill ups changed plugs and changed oil 1000mi ago

After sitting and engine cold?

u dont if its injection-computer shud doit by default unless theres issues in the system--is the spark plug tite on that cylinder or does it come out the carb/throttle body--purchase a shop manual for troublshootn

how do i change the oil and filter myself on the kawasaki 1500 vulcan 1996. what type of oil do you suggest would be better for my bike. thanks

check to make sure you didn't get bad gas some where is it a cali model be couse your carbs can over flow and you will never know it just all goes into the charcoal canister in the front bottom of the radiator is allow raw gas to enter in the air side of the carb un metered

hello, you may need to check float in carb, could be sticking or bad, make sure plugs aren wet with gas insted of oil, you can smell gas fouled plugs, than oil, gas coming out of breather sounds like float needs to be adjusted or floats bad or trash in carb, may have broke ring also

You need to remove the carbs and dismantle them completly and adjust them to spec. Also change the fuel filter.

if u can tuen the throttle and it still run ..its ur idle,u need to adjust ur idle adjustment screw ur manual can help u find this

did you put different pipes on, possibly not enough backpressure, or might have to just adjust carb a little

adjust the air to fuel mixture there is 2 much air going in and not enough fuel on the carb there will be a screw there are 2 one which is the mixture screw and one for the idle the idle will be the one sticking out more than the mixture screw

lean gas mixture. or the valve timing is off, but probably both. A lean mix will run really hot and allow for secondary combustion in the pipes (backfire) when the valves let even a bit of uncombusted gas through. My guess is that the bike hasn't had the carbs cleaned out thoroughly in a while. Run a half can of Sea Foam with your full tank of gas to help clean out the carbs, but really you should take them apart and dip them to clean everything out. Also you could adjust your pilot screw settings to make it run a bit more rich, but then you are just compensating for the dirty carbs. That's just my guess.