Morgan CarbTune Issue

[RPG]

I had posted this prior to the crash and thought it might be helpful to anyone owning a Carbtune so here it goes again;

 

I've owned a Morgan Carbtune for a couple of years now and used it quite a few times with no problem, until today. I could not get consistent readings, the rods would rise and fall with changes in throttle settings but two rods would not change their positions at idle in response to adjusting the balancing screws. In other words, when I turned the adjusting screws only one rod on each bank would rise or fall, the other rod would just stay fixed, making proper balancing impossible. I removed the Carbtune, took it over to my workbench and removed the bottom cover, opposite the hoses, I removed the rods one at a time, polished the rods with a cotton cloth, I then inserted a Q-tip into each of the brass rod bushings, a surprising amount of black residue came out of each rod bushing. I reassembled the Carbtune, hooked it back to the bike and tried it again, this time all the rods moved smoothly and I was able to sync the carbs. From now on I'm going to make cleaning my Carbtune a first step in syncing my carbs, it only takes about 10 minutes and guarantees a correctly operating piece of equipment.

[CrazyHorse]

I had a problem with fluid in the clear connecting tubes sometimes I would not get a reading in one or more tubes.

[BradT]

Nice post. I have noticed a few times you have to lightly tap the unit to move the rods.

 

I will try your suggestion. Thanks

 

Brad

[BuddyRich]

You Should be careful to keep each rod and spring together and place them back in the shaft they came out of. The nuts on the bottom are calibration nuts and each one is calibrated in place.

[bisquit]

Has anyone ever posted on exactly how to hook one of these things up and how to actually use one. I have one but it didn't come with any instructions....I saw the thread Don posted on synching carbs but I haven't done it yet....I'm gonna practice on Hipshots bike tomorrow.......Don

[RPG]

You Should be careful to keep each rod and spring together and place them back in the shaft they came out of. The nuts on the bottom are calibration nuts and each one is calibrated in place.

Thats correct, its important the rods go back into their original holes. Thats why I suggest doing one at a time, to avoid mixing them up.