The guys are right, replace the cap screw and check again. It’s also possible the mixture screw is well off giving a poor performance on that carb. Really shouldn’t be that far out. Try it n see if the clatter improves. I had it on a ZZR600
I wonder how #1 got that far out of balance? Is the carb diaphragm OK? I notice at 1.49 that you are missing one of the screws in the #1 carb top cover. That motor is sound.... very strong.
if there's one thing these bikes need is a good balance job on the carbs to run strong. only thing i don't like is the 4 gauge set up. i prefer the single gauge units with a manifold directing the vacuum from each carb. this takes out the variables of different gauges and provides for a more equal setup.
Yep, much easier than futzing with one gauge. Hook all gauges to a single cylinder one at a time OR better, using several T fittings, connect all gauges at the same time to one cylinder and, using gauge adjustment screw, adjust all to read the same.
I think I might be tweaking the air mixture screw on no 1 carb to make sure she’s at optimum revs at minimum idle speed…… then balance. Just a suggestion
get yourself a colour tune and check fuel screw adjustment,bunsen blue u want then re sink butterflies,choke plungers if worn end pads will cause problems guy on ebay now does refurb on cv and vm choke plungers essential for proper running and good idle ec.
you seem to know what you are doing but those particular gauges do not have a way to put all the needles to exact zero before you start the engine which means the results are better than nothing but not as accurate as possible with good gauges.
HHmmm not really. The best way of adjusting the air/fuel screw, is to adjust each screw to obtain the highest rpm. As you adjust these screws in and out the rpm should rise and fall. Set them all so you get the highest rpm then adjust the idle screw to obtain a good idle (1,100 rpm?). You could try and use the vacuum gauges to do the same thing - potentially. Adjust each fuel mix screw to give you the highest vacuum across all 4 cylinders.
First time I do this so be patient with me 😆, so i adjust air fuel screw one carb at a time until there each at highest rpm and then adjust idle like tge video one carb at a time? Highest vacuum means what on guage or without guage? Maybe its easier to do it without guages sounds pretty ez, turn air fuel screws until it revs high for each carb and tgen adjust idle for each carb?
this lubrication setting is not precise but it is not clear how to fix it with the same caliber it is difficult to understand the butterfly knobs can not be adjusted with the camera 01 01 01 must be a micrometer
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Missing a cap screw on #1 carb. Could lead to vacuum leak.
The guys are right, replace the cap screw and check again. It’s also possible the mixture screw is well off giving a poor performance on that carb. Really shouldn’t be that far out. Try it n see if the clatter improves. I had it on a ZZR600
Thanks this will be useful to me as I have to do my GS 1000 G very helpful... 👍
I wonder how #1 got that far out of balance?
Is the carb diaphragm OK?
I notice at 1.49 that you are missing one of the screws in the #1 carb top cover.
That motor is sound.... very strong.
if there's one thing these bikes need is a good balance job on the carbs to run strong. only thing i don't like is the 4 gauge set up. i prefer the single gauge units with a manifold directing the vacuum from each carb. this takes out the variables of different gauges and provides for a more equal setup.
marty miles just check gauges first by hooking all to 1 carb. Record gauge differential. Take the differential into account. Eg #2 gauge -1
Yep, much easier than futzing with one gauge. Hook all gauges to a single cylinder one at a time OR better, using several T fittings, connect all gauges at the same time to one cylinder and, using gauge adjustment screw, adjust all to read the same.
I would be checking the compression or doing a leak down test.
You probably tried to just show the principal, but there is more to this
I think I might be tweaking the air mixture screw on no 1 carb to make sure she’s at optimum revs at minimum idle speed…… then balance. Just a suggestion
get yourself a colour tune and check fuel screw adjustment,bunsen blue u want then re sink butterflies,choke plungers if worn end pads will cause problems guy on ebay now does refurb on cv and vm choke plungers essential for proper running and good idle ec.
Just try n see if it reduces the clatter a bit……. I had this on a zzr 600 that sounded like a tractor 😆
you seem to know what you are doing but those particular gauges do not have a way to put all the needles to exact zero before you start the engine which means the results are better than nothing but not as accurate as possible with good gauges.
If I remember right there is a screw on the back of them to put them to 0
get the proper tool for carb balancing,long screwdriver inside an 8 mm socket.u need to unhook throttle cable to get to one off the adjusters.
Can i also use this same tool to adjust air/fuel screw?
HHmmm not really. The best way of adjusting the air/fuel screw, is to adjust each screw to obtain the highest rpm. As you adjust these screws in and out the rpm should rise and fall. Set them all so you get the highest rpm then adjust the idle screw to obtain a good idle (1,100 rpm?).
You could try and use the vacuum gauges to do the same thing - potentially. Adjust each fuel mix screw to give you the highest vacuum across all 4 cylinders.
First time I do this so be patient with me 😆, so i adjust air fuel screw one carb at a time until there each at highest rpm and then adjust idle like tge video one carb at a time? Highest vacuum means what on guage or without guage? Maybe its easier to do it without guages sounds pretty ez, turn air fuel screws until it revs high for each carb and tgen adjust idle for each carb?
Perfect. Try it out.
So i do it as i confirmed in last message? 1 carb at a time when adjuat either fuel/air and idle ?
Screw missing on No. carb cap, may be the reason it is out of sync with other
this lubrication setting is not precise but it is not clear how to fix it with the same caliber it is difficult to understand the butterfly knobs can not be adjusted with the camera 01 01 01 must be a micrometer