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Motorcycle Carburetor Synchronizer
The Tool can be quickly diagnosed with incorrect timing, stuck valves, leaking manifolds, incorrect fuel mixtures, spark misfires. Troubleshoot spark misfire and poor engine compression.
Packing List
- 1 pcs fuel vacuum gauge balancer(2 gauge)
- 4 pcs vacuum hose
- 4 pcs threaded brass carburetor :
102mm(M6x1.0) Extension x 1pc
52mm(M6x1.0) Extension x 1pc
52mm(M5x0.8) Extension x 1pc
102mm(M5x0.8) Extension x 1pc
4. 2 pcs connector
5. 1 pcs screwdriver
Note
If you find the needle does not point the zero position.Please don't worried. This gauge is precision.Please open cover by hand and use slot screwdriver to adjust it.It is easy.
Note
Because of the high sensitivity of the gauge, it is necessary to slowly open the accelerator of the motorcycle. If you open the accelerator too fast, you can damage the gauge. So be careful when using the product . thanks.
How To Install
Step 1
Connect the hose and gauge
Step 2
Connect the connector and the hose
Step 3
Connect the other hose to the other end of the connector
Step 4
According to the previous method, connect all 2 piece gauges and hose
How to Use
- Place the gauge correctly.
- The long adapter is equipped with an internal carburetor, the short adapter is equipped with an external carburetor.
- Grab the throttle give it a couple snap backs，those butterflies kins of back into a seat all right，so you're anapping the throttle it allows me to snap back and kind of rest in a place or in a pocket that they enjoy, and going to start the bike back, check the setting and see if it changed at all if it changed at all no problem make another adjustment and you're going to keep going back and forth until you are happy with it.
patrick cagney
2025-08-22 16:49:16
first off start with valves CLOSED than OPEN valves on hoses VERY SLOWLY till needle/s STARTS to MOVE than your in business..synced my dual carbs once adjusted when both needles matched up , you can hear it purrrrrrrr ...cold start up muchhhh better, fuel economy up as well all around better performance with synced carbs (96 honda shadow 600)valve adjustment + synced carbs made HUGE difference getting 50mpg.CHEERS ALL -hoped that helped
The Kunz
2025-08-07 15:19:50
Arrived on time package good. Product looks good but cheaply made. Gauges do not read correctly even when set to 0 on start up. Vacuum lines that came with it do not fit snug on fittings and the fittings that came with it are cheap plastic fittings and they leak. Do not waste your money on this product. Very unhappy customer
JP
2025-07-15 19:50:08
Bought to sync the carbs on my 82 Yamaha Virago 750. The valves are tricky to dial in. After plugging them into vacuum ports (and during idle), I had to completely unscrew the supplied valve, plug that hole with my finger, and wait until the needle started bouncing back and forth rapidly across half the dial. At that point, I replaced the supplied valve screw and turned it in (clockwise) until the bouncing dropped to just barely moving in the center of the extremes it was moving between before. Did that for both. Had to redo it a few times while I played with the sync screw on the carb because the needles seem to get unaligned easy and need to be readjusted with the supplied screwdriver. Eventually, between fiddling with the carb sync screw and the gauge valves (and a lot of triple checking), I was able to sync my carbs. Engine runs great now. Sometimes the needles would get way off and the adjustment screw wouldn't turn far enough to fix it. To get them back, I gently slid/moved them back and forth a few times until they seated close to zero, and then used the adjustment screw to zero them back in. Some reviews mention that problem and I found just gently moving them one way or another in small amounts seemed to reset them close enough to readjust and work again. Overall, you get what you pay for. Higher priced gauges might be more reliable, but these worked for me with the tips above, and I'll keep them handy in my toolbox until I need them again. Hope this helps.
A R
2025-06-04 15:28:11
The media could not be loaded.
Norm
2025-05-20 16:55:00
Used to sync carbs on old Honda. Worked great, bike runs much better
Bryan Meng-yeu Wang
2025-05-03 10:35:09
These came with very basic instructions. Build quality on the outside is okay. Adjusted the dials to zero and used as directed. After the first use, one was completely off zero and couldn’t be calibrated back.After several attempts I just sent them at a different position and realized that the two gauges move at different speeds and never quite end up at the same position after the load is taken off. Now I have a useless dual gauge.
Daniel Sztajnert
2025-04-28 11:34:51
I like the price and it works
Snappleberries
2025-04-09 15:54:24
Easy to set-up, dial-in, and use. Both gauges read true to each other. The plastic dampener valves are what you would expect for a tool in this price range, but for just synchronizing dual carbs to each other every once in a great while these are just the ticket.
Miggi Mati
2025-04-04 13:40:52
I have a 2001 Yamaha V-Star 650. After cleaning the carbs, it is essential to balance the carbs. I will not waste my money on an expensive balancer. By using this gadget, manage to tune the carbs for it to run smoothly.
Carson Warner
2025-03-24 17:40:14
When I got the gauges one of them had the needle off of 0 the other one was dead on 0. I adjusted the needle as the instructions provided showed and centered the needle on 0 however when you then use the gauge with a vaccum it gives a reading that is inaccurate and when the vaccum is released the gauge doesn't return to 0 but stays at the false reading. Inaccurate and useless however the other gauge is useable and returns to 0 but I'm sceptical on the accuracy with the issue of the other gauge.
Melissa
2025-03-08 15:21:13
Worked for a couple minutes. There is adjustments and tuning but it didn’t work at all. One gauge seemed to work a bit longer than the other but this was a waste of money. Well I guess I’m returning them so more like a waste of time.
Jodi Alford
2025-02-05 14:23:03
Don't work correctly
Quilting person
2025-01-24 14:08:22
have not used it yet but bought it for a motorcycle
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