carb tune help/procedure

I've been wondering why when I accelerate its kinda laggy and kinda sounds boggy when I open it all the way up.I was told it's probably the carbs. I've tuned them before but I probably did more bad than good. The gauges I used were in inches hg not cm hg like noted in the manual. I went online and converted the cm needed to inches and it said a little over 8 inches hg. So I did that but it's hard to keep it from revving and dealing with the idle screw too. What's the procedure in trying to balance them? Do I go in order carb 1-4?

I would try bench syncing them first if you're having that much trouble. The main thing isn't the number, but that they're all even and moving together as closely as possible. i used a light looking through the carb and adjusted them down one at a time until the light was all but gone. Then put them on the bike and set the idle. It doesn't matter what order unless you have a lead carb. That would be the one without an adjuster. Just depends on your carbs. Mine all had adjusters so I just made sure they were all even.

I would check to make sure you're also getting good spark as well. The plugs in my bike were starting to foul when i purchased it.

Chose one carb to be the lead carb and make to others the same as that one.
Steve

blink - do not bother with the actual readings -
try and get them all within + or - 2 cmhg of each other (may be slightly different to mine )
what model is yours ?
What kind of manometers are you using ?

rctreadaway wrote: I would try bench syncing them first if you're having that much trouble. The main thing isn't the number, but that they're all even and moving together as closely as possible. i used a light looking through the carb and adjusted them down one at a time until the light was all but gone. Then put them on the bike and set the idle. It doesn't matter what order unless you have a lead carb. That would be the one without an adjuster. Just depends on your carbs. Mine all had adjusters so I just made sure they were all even.

I would check to make sure you're also getting good spark as well. The plugs in my bike were starting to foul when i purchased it.

I forgot to mention it's a 78 kz650b. I adjust them by turning the air screw on top of the carbs? They're minuki carbs or however u say it.

Zephyrrider wrote: blink - do not bother with the actual readings -
try and get them all within + or - 2 cmhg of each other (may be slightly different to mine )
what model is yours ?
What kind of manometers are you using ?

A 78 kz650b. I was using vacuum gauges inches hg not cm hg

You don't have a manual do you?
Steve

blink543 wrote:

rctreadaway wrote: I would try bench syncing them first if you're having that much trouble. The main thing isn't the number, but that they're all even and moving together as closely as possible. i used a light looking through the carb and adjusted them down one at a time until the light was all but gone. Then put them on the bike and set the idle. It doesn't matter what order unless you have a lead carb. That would be the one without an adjuster. Just depends on your carbs. Mine all had adjusters so I just made sure they were all even.

I would check to make sure you're also getting good spark as well. The plugs in my bike were starting to foul when i purchased it.

I forgot to mention it's a 78 kz650b. I adjust them by turning the air screw on top of the carbs? They're minuki carbs or however u say it.

? :blink: ? If you have a manual go back and re-read through the section on synchronizing the carbs. You do NOT fiddle with the air screws to synchronize the carbs. The air screws have nothing whatsoever to do with carb synchronization. Ed

650ed wrote:

blink543 wrote:

rctreadaway wrote: I would try bench syncing them first if you're having that much trouble. The main thing isn't the number, but that they're all even and moving together as closely as possible. i used a light looking through the carb and adjusted them down one at a time until the light was all but gone. Then put them on the bike and set the idle. It doesn't matter what order unless you have a lead carb. That would be the one without an adjuster. Just depends on your carbs. Mine all had adjusters so I just made sure they were all even.

I would check to make sure you're also getting good spark as well. The plugs in my bike were starting to foul when i purchased it.

I forgot to mention it's a 78 kz650b. I adjust them by turning the air screw on top of the carbs? They're minuki carbs or however u say it.

? :blink: ? If you have a manual go back and re-read through the section on synchronizing the carbs. You do NOT fiddle with the air screws to synchronize the carbs. The air screws have nothing whatsoever to do with carb synchronization. Ed

They do. In the manual it says it's supposed to mess with the air to fuel mix. Then what does it do

650ed wrote:

blink543 wrote:

rctreadaway wrote: I would try bench syncing them first if you're having that much trouble. The main thing isn't the number, but that they're all even and moving together as closely as possible. i used a light looking through the carb and adjusted them down one at a time until the light was all but gone. Then put them on the bike and set the idle. It doesn't matter what order unless you have a lead carb. That would be the one without an adjuster. Just depends on your carbs. Mine all had adjusters so I just made sure they were all even.

I would check to make sure you're also getting good spark as well. The plugs in my bike were starting to foul when i purchased it.

I forgot to mention it's a 78 kz650b. I adjust them by turning the air screw on top of the carbs? They're minuki carbs or however u say it.

? :blink: ? If you have a manual go back and re-read through the section on synchronizing the carbs. You do NOT fiddle with the air screws to synchronize the carbs. The air screws have nothing whatsoever to do with carb synchronization. Ed

blink543 wrote:

650ed wrote:
? :blink: ? If you have a manual go back and re-read through the section on synchronizing the carbs. You do NOT fiddle with the air screws to synchronize the carbs. The air screws have nothing whatsoever to do with carb synchronization. Ed

They do. In the manual it says it's supposed to mess with the air to fuel mix. Then what does it do

What manual are you using?? If it say to sync the carbs you are "supposed to mess with the air to fuel mix" throw the manual away and buy Kawasaki Service Manual. You do NOT fiddle with the air/fuel mixture to synchronize the carbs. You DO adjust the individual throttle adjusting screws to synchronize the carbs. However, if you have gotten the air screws out of adjustment by fiddling with them you will first need to undo whatever it is you did to them. Ed

I'm going to sync my carbs soon. I'll do a thread on it. In the mean time get a manual.
Steve