Author Topic: Emgo Carb Synch Tool (Read 3454 times)

MandEms · « **on:** August 27, 2014, 02:27:16 PM »

Now that I have your attention. I received one of these in the mail today. The synch tool, I mean. All the gauges are set to different values. Can I just remove the lens and adjust to zero with the calibration tool?

City Boy · « **Reply #1 on:** August 27, 2014, 02:30:51 PM »

Hi.A calibration tool came with gauges?How does it work? Any picture of it?-------------Nice Rack

flybox1 · « **Reply #2 on:** August 27, 2014, 02:35:17 PM »

calibrate them to one of your carbs.
the covers screw off.

MandEms · « **Reply #3 on:** August 27, 2014, 02:42:17 PM »

Quote from: City Boy on August 27, 2014, 02:30:51 PM

Hi.A calibration tool came with gauges?How does it work? Any picture of it?-------------Nice Rack

My bad. I meant calibration screw, which is on the front of the gauge.

City Boy · « **Reply #4 on:** August 27, 2014, 02:51:21 PM »

Oh ok.I have a Honda set.I made a block of 4 nipples with one feed nipple for the vacuum source.With all 4 gauges receiving the same source it should be easy to sync the gauges.The Honda gauges have no adjustment screw that I know of.Fortunately mine checked Aok.Not bad for 39 year old gauges!!

martin99 · « **Reply #5 on:** August 27, 2014, 03:17:18 PM »

Just unscrew the faces and turn the calibration screws to get all the needles sitting at the same position. Not absolutely necessary to set to zero, as long as they are all set the same you are good to go. When you come to sync, it is more important that the carbs are adjusted so the needles are all pointing the same than it is to worry about what the particular value is. Use the in-line taps to settle down any needles that are fluctuating when the bike is running.

MandEms · « **Reply #6 on:** August 27, 2014, 03:41:42 PM »

Quote from: oldskoolnuts on August 27, 2014, 03:17:18 PM

Just unscrew the faces and turn the calibration screws to get all the needles sitting at the same position. Not absolutely necessary to set to zero, as long as they are all set the same you are good to go. When you come to sync, it is more important that the carbs are adjusted so the needles are all pointing the same than it is to worry about what the particular value is. Use the in-line taps to settle down any needles that are fluctuating when the bike is running.

Thanks oldskool and everyone.

BobbyR · « **Reply #7 on:** August 27, 2014, 08:27:00 PM »

Actually you hook each gauge to one carb and use the screw to get all of them reading the same. Then you have calibrated them using the same vacuum source. Then you hook them up and synch your carbs.

Deltarider · « **Reply #8 on:** August 28, 2014, 01:53:59 AM »

Quote

Actually you hook each gauge to one carb and use the screw to get all of them reading the same. Then you have calibrated them using the same vacuum source.

For some reason that didn't work for me, not when the 4 were hooked up simultaneously. So I advise to hook up one after the other. BTW, are there others among you that have the same experience or is it just me?

dave500 · « **Reply #9 on:** August 28, 2014, 02:32:05 AM »

hook all four to a steady vacuum source at the same time,then see if they read the same,if not set them so they do,vacuum is like pressure,they should all read the same like if you had four gauges hooked into the same pressure vessel,you can suck on the pipe and hold the vacuum with your tongue,or if you have an old car with distributor and carby use its vacuum advance port itll be strong and steady,trying to set them individually is the wrong way,even though when they are being used they will be measuring individual vacuums,and you will then be adjusting the vacuum source.

Deltarider · « **Reply #10 on:** August 28, 2014, 02:51:09 AM »

Agreed, a steady vacuum source. That is not a working cylinder.

evanphi · « **Reply #11 on:** August 28, 2014, 04:59:44 AM »

I just set them all to the same point on the dial before I hook them up to the carbs.

lucky · « **Reply #12 on:** August 28, 2014, 06:51:18 AM »

Quote from: MandEms on August 27, 2014, 02:27:16 PM

Now that I have your attention. I received one of these in the mail today. The synch tool, I mean. All the gauges are set to different values. Can I just remove the lens and adjust to zero with the calibration tool?

YES you can, it is common to have to do that after shipping.
Don't worry .
Just carefully lift off the needle and place it back on in the correct position.
DO NOT TWIST just gently push the needle downwards.

lucky · « **Reply #13 on:** August 28, 2014, 06:52:56 AM »

Quote from: BobbyR on August 27, 2014, 08:27:00 PM

Actually you hook each gauge to one carb and use the screw to get all of them reading the same. Then you have calibrated them using the same vacuum source. Then you hook them up and synch your carbs.

evanphi · « **Reply #14 on:** August 28, 2014, 07:32:39 AM »

Quote from: lucky on August 28, 2014, 06:51:18 AM

Quote from: MandEms on August 27, 2014, 02:27:16 PM
Now that I have your attention. I received one of these in the mail today. The synch tool, I mean. All the gauges are set to different values. Can I just remove the lens and adjust to zero with the calibration tool?

YES you can, it is common to have to do that after shipping.
Don't worry .
Just carefully lift off the needle and place it back on in the correct position.
DO NOT TWIST just gently push the needle downwards.

Don't even have to do that. These emgo ones have an adjustment screw.

BobbyR · « **Reply #15 on:** August 28, 2014, 07:40:46 AM »

Quote from: Deltarider on August 28, 2014, 02:51:09 AM

Agreed, a steady vacuum source. That is not a working cylinder.

Once you have the bike warmed up you can use cylinder 1 or 4 as long as it is not miss firing and you adjust the restrictors to stop the needle bounce. You can get a pretty stable reading from a cylinder.
Since synching carbs is all about having each carb pulling the same vacum it is important that the guages are "calibrated" to read the same.

Deltarider · « **Reply #16 on:** August 28, 2014, 01:58:48 PM »

I know. I remember long time ago I connected all 4 vac meters to one cylinder and the 4 meters clearly were giving different readings. I took my set to the importer and he showed me with a vacuum pump - a steady vacuum source so to speak - there was nothing wrong and indeed the meters showed the same underpressure. That's what I meant above.

BobbyR · « **Reply #17 on:** August 28, 2014, 06:14:27 PM »

I am not sure if you connected all of them at once. I have done it regualry and had no issues like that. If your motor was idling erratically that could happen.

dave500 · « **Reply #18 on:** August 29, 2014, 01:38:51 AM »

you can hook them all to one cylinder on your bike so long as you hold the rpm higher than idle,like say 3500-4000 rpm,itll steady out there,if you have an old automatic trans v8 you have a great steady and strong vacuum port at idle rpm from the modulator port or the carby advance port,i tried using a vacuum cleaner once but it sucked!

70CB750 · « **Reply #19 on:** August 29, 2014, 03:52:51 AM »

Quote from: dave500 on August 29, 2014, 01:38:51 AM

you can hook them all to one cylinder on your bike so long as you hold the rpm higher than idle,like say 3500-4000 rpm,itll steady out there,if you have an old automatic trans v8 you have a great steady and strong vacuum port at idle rpm from the modulator port or the carby advance port,i tried using a vacuum cleaner once but it sucked!

I have Thomas's vacuum pump pumping air in my pond, I wonder if I could make a port on the intake side to calibrate my vacuum gauges. After all it was the original purpose of it, to build vacuum in labs.

dave500 · « **Reply #20 on:** August 29, 2014, 03:59:40 AM »

if its smooth and not pulsing sure,i doubt it is though?,unless its a rotary sort of pump?that also sucks,not as much as me googling penis pumps so I could post a funny picture and realising what I just did!i cant wait to see my spam collection in a day or two?that also sucks!

70CB750 · « **Reply #21 on:** August 29, 2014, 04:06:34 AM »

Yeah, it sucks!

I believe it is rotary vane pump.

dave500 · « **Reply #22 on:** August 29, 2014, 04:08:21 AM »

not like a penis pump they look crap!plus they don't make them in my size xxxxl.

70CB750 · « **Reply #23 on:** August 29, 2014, 04:24:44 AM »

Quote from: dave500 on August 29, 2014, 04:08:21 AM

not like a penis pump they look crap!plus they don't make them in my size xxxxl.

TMI man

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Author Topic: Emgo Carb Synch Tool (Read 3454 times)