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So I've got some pretty nasty carbs and I'm in the process of tearing them apart. I've gotten the bowls off and it appears the floats are stuck in place. I've hit them with carb cleaner, air, pb blaster & silicon lube. Still no luck on getting them moving. I attempted to remove the pins however they are stuck in place as well. I tried a tap/hammer and they appear to be too soft. The most progress I've made is lubing the floats up and forcing to move with a set of needle nose. I'd really like to take the floats off to get the carbs in a dip. Below are some pics to give you an idea as to the shape they're in. Any ideas???
Drop them into an ultrasonic cleaner without any harsh chemicals and give them a good shake. That should clear much of the residue without damaging the plastic floats.
Drop them into an ultrasonic cleaner without any harsh chemicals and give them a good shake. That should clear much of the residue without damaging the plastic floats.
i just dip em for about an hour in regular carb chem dip, that usually loosens the goo up enough to pull the float and needle out. it wont damage the floats if you dont leave it in for more than 5 or 6 hours. (trust me ive cleaned up some carbs FUBAR) if you have a bit of trouble with the float pin use something to drift it out, take the carb bodies completely apart so your only working one one at a time. set the carb on a block of wood, than use an a proper length socket or other spacer to absorb the impact and prevent breaking the pin towers, thats hollow to let the pin slide through. also, find stuff called rust dissolving gel, basically it gets rid of all the oxides and goo (acid based)
an ultrasonic cleaner works good too as stated but is rather expensive.
oh and from what i remember last time i did a set of cb carbs the pins defiantly had to be "pressed" out how i described not sure if there all like that but its possible.
This guy seems to know a few tricks, like boiling carbs in lemon juice.
I would go for boiling them in water first to get the frozen parts moving.
http://cycles.evanfell.com/2008/09/how-to-clean-a-motorcycle-carburetor-the-right-way/
Just get a small diameter rod, slightly smaller than the pin, and gently tap tap tap until it moves.
They may come out one way easier than the other, so try from both sides.
Otherwise the lemon juice trick works quite well for cleaning, but be forewarned it REEKS, your house will smell terrible for days and your wife will be pissed. My roommate said "it smells like you covered a skunk in gasoline and lit it on fire in our kitchen"
So what I'm getting is the floats aren't that delicate? I'll go with the solvent dip & report back. Has anyone boiled carbs up with the floats attached or used the lemon juice boil on them? I'm not sure how resistance the floats are to high temps or citric acid.
There's a reason that pros don't use lemon juice or Pine SOl or CLR and that's because they clean the outside but don't work well inside cleaning up the small drillings.
Carb dipping sauce such as Berrymans are good but rather toxic, so be careful. And they tend to soften O rings and dissolve plastic floats so keep an eye on them. Sonic cleaners are way cheaper than they used to be but still not cheap. They are the best way though.
I've upended the carbs all week and have been spraying them down with PB blaster along the columns/pins then letting it soak. This has freed up three of them. I'll be resting them in a solvent tank on saturday to see if I can get the fourth to free. I'll get some after pics this afternoon up.
How did the carb dip work for you? Did you separate the carbs out before dipping? I'm a newbie here and just got a cb350F, have never worked on a bike and am into the carbs and facing the same issue as you.
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