Help!!! Carb Sync after rebuild

[wyliedunham]

I have just thoroughly cleaned the carbs adjusted floats, replaced the A/F screws, all the rubber jet plate plugs and intake boots. The bike runs like it never has before at WOT. However I cannot get the sync correct, I can sync the right side and the left side but not get them to sync together.
When trying to bring them together the right/left sync screw bottoms out, when backing out the screw the idle raises, it raises the off the adjuster screw so it cannot be lowered.

Im just wondering if I could have put springs on wrong or the linkage? Any Ideas. The side at 13 inches is the right and 7 is the left (when sitting on the bike)

As a side note it did sync before the rebuild but popped at all RPM's. Apparently I fixed both those things!

 

[tugla]

could be a linkage got bent during your rebuild and or ya a spring installed in correctly. you can bend the tabs the screws run on easily so maybe take a look and pull on the ones that are far away from screw, wont need to move much

 

[[email protected]]

I would double check your assembly. IF all is correct, the tabs can be bent as noted.

 

[jfeagins]

It's all too easy to get those linkages and the springs in there back together incorrectly. Darn little springs are hard as he!! for a guy like me, with big fingers, to put back correctly. I've ended up by having to bend a tab back on at least one occasion.

 

[MANA1]

You can check your butterfly valve on your carbs. Fully closed with the idle speed screw set all the way out. Also the vboost butterfly valve setting. I have the same set of vacuum gauges. I always set all four to carb #2. They tend to vary even if they are set to zero. One way to check is to swap out the gauge connections. 2-1/ 1-2and 4-3/ 3-4 then turn the gauges upside down and check 4-1 etc.. This was the only way I could get my bike syncd correctly.

 

[wyliedunham]

Thanks for all the suggestions, I will check the tabs then try to synch again.

 

[wyliedunham]

you guys are AWESOME!!!
Who would of thought those little tabs could have caused so much pain? I got all 4 carbs in sync in a couple of minutes after flexing the tabs.

The V-MAX was a childhood dream bike of mine. I must say that going from a zx9 to the MAX was a disappointment initially, till I discovered that one of the Carbs was rebuilt incorrectly and the thing was basically running on 3 cylinders . The last person in the carbs miss keyed the jet block gasket (essentially 10 degrees off). Needless to say, now I am a happy camper. I just picked up some Supertrapps and this bike is screaming. Thanks again for all the assistance.

 

[Sonoran6]

I have built a home made 2 hose manometer out of glass bottles and aquarium hose. My question is once I synch 1&2 then 3&4. can I synch Right and Left by connecting the hoses to carb 1&3?

 

[tugla]

if you can make a 4 tube system that would be best, you can go try that hooking them accross, then i would put them on 2 and 4 to double check.
save the time build a 4 tube system cuz you might still need to adj both left or both right while doing the right/left