Carb Cleaning Question

[Warp84]

I've been doing the Carb cleaning for my 84' FJ1100 in an ultrasonic cleaner at my friend's tiny shop. But after coming out of the cleaner, regardless of it being air dried or using shop air, there's white particulate residue all over the carbs. It rub's right off the carb's but I don't know why residue is showing up after the carbs are dried, straight after being cleaned. If anyone can lend some insights I'd greatly appreciate it.

Is it possibly I need to make sure my friend is running Distilled Water with the solution instead of regular water? (Hard water stains) I'm not sure which he's doing.

[Billy Bananahead]

I would consider cleaning the carbs myself by hand. Those ultrasonic cleaners will never get the carbs thoroughly clean.
In all the years that i've been biking i've never had a set of carbs cleaned ultrasonically.

[Motofun]

The last carbs I cleaned I put about a gallon of Berryman's carb cleaner in the ultrasonic heated bath.  It worked a miracle!  Wasn't sure if it cloud catch fire so I did it outside....

[Chainlube]

I have been using an ultrasonic cleaner, heated to 50C with water and a small amount of Simple Green HD (not the green stuff... That is not good for aluminum) on mine and customer bikes for several years.  I never let aluminum parts stay in for over 5 min or they will stain (rinse immediately!).  All removed metal parts go in the ultrasonic cleaner.  No plastic or rubber parts allowed!  The rest of the carb bodies are cleaned in a solvent tank, sprayed with carb cleaner where needed, rinsed and blown through with compressed air.  Never, ever, ever allow carb cleaner to come into contact with any rubber parts or they will be damaged and swell up!  Verify every passage is clear prior to reassembly.  I have been a professional motorcycle mechanic for almost 40 years, and this is the best process I have found to date. 

[MarioR]

I would consider cleaning the carbs myself by hand. Those ultrasonic cleaners will never get the carbs thoroughly clean.
In all the years that i've been biking i've never had a set of carbs cleaned ultrasonically.

Let's say you have pilot jet channel plugged , idle fine but doesn't go smooth to rpm. How would you clean such a small channel manually vs ultrasonic cleaner?

[Pat Conlon]

The way we used to do it before ultrasound.

Carb Soak and compressed air with a needle tip.  (Wear safety glasses)

[FJmonkey]

Let's say you have pilot jet channel plugged , idle fine but doesn't go smooth to rpm. How would you clean such a small channel manually vs ultrasonic cleaner?

When you say idles fine, do you mean while on the choke? Or does it idle fine warmed up and off choke? Very important difference...

I would fix this by (cleaning them as discussed with a proper sonic soak) or replacing them for new ones, jets or carbs.  You could use some carb cleaner and copper/brass wire strands. But this rabbit hole is just as busy and labor intensive as the proper way. And you might not get it all for the effort. If you really have no options, break out the toothpicks and carb spray, and pray for the best. RPM can do a proper refresh on your carbs. Once the carbs are clean, keep them clean by running the bike frequently (every 2 weeks seems to work for me) to flush the Ethanol fuel from causing the plaque. Or drain the carbs after each ride, or use on-ethanol fuel. The ethanol is Bain   to our Kookaloo...

[Billy Bananahead]

I would consider cleaning the carbs myself by hand. Those ultrasonic cleaners will never get the carbs thoroughly clean.
In all the years that i've been biking i've never had a set of carbs cleaned ultrasonically.

Let's say you have pilot jet channel plugged , idle fine but doesn't go smooth to rpm. How would you clean such a small channel manually vs ultrasonic cleaner?

As the others have said plus i'd fire loads of cleaning agents down the orifice's such as carb cleaner, brake cleaner, electrical contact cleaner, petrol, anything that is going to shift the caked on sh!te, then put the carbs back on and fire it up. Yes i know certain agents can damage rubber seals and o rings but if i can get away with it then that's great. 

[MarioR]

Let's say you have pilot jet channel plugged , idle fine but doesn't go smooth to rpm. How would you clean such a small channel manually vs ultrasonic cleaner?

When you say idles fine, do you mean while on the choke? Or does it idle fine warmed up and off choke? Very important difference...

I would fix this by (cleaning them as discussed with a proper sonic soak) or replacing them for new ones, jets or carbs.  You could use some carb cleaner and copper/brass wire strands. But this rabbit hole is just as busy and labor intensive as the proper way. And you might not get it all for the effort. If you really have no options, break out the toothpicks and carb spray, and pray for the best. RPM can do a proper refresh on your carbs. Once the carbs are clean, keep them clean by running the bike frequently (every 2 weeks seems to work for me) to flush the Ethanol fuel from causing the plaque. Or drain the carbs after each ride, or use on-ethanol fuel. The ethanol is Bain   to our Kookaloo...

This was only example 

Goint to the topic, no choke, idle fine, hesitate to go from idle to mid range, after mid is going fine...