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Discussion Starter #1 (Edited)
Hello everyone,
I'm planing to clean my throttle body unit, but i don't now what chemical to use in this procedure. Honda manual sayd they are treated with molibden.
hello everybody !
What do you think about it ? it's suited for this job ?
liqui-moly-throttle-valve-cleaner-500x500h.jpg

Thank you all in advance 馃馃
 

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If you look into the throttle bores there is a crescent moon shaped black coating on the butterflies, which is the thing you mentioned. Do not attempt to clean it, no chemicals in the vicinity, per Honda.
 

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You can ultrasonic clean them using the proper solution. Just make sure you remove the injectors first. 馃槖
 

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What's the general concensus on cleaning the injectors, while we're at that section of the bike? I've read many times from car to bike forums that cleaning injectors is rarely done properly, and even if done properly, very rarely does one really need to do it. True?

Also, instead of putting chemicals on the TB assembly why not sync them, if I'm not mistaken that's the only intervention one can do on the TBs, and from what I've read, it only makes sense to do it after the valves have been checked, so we're talking "big mileage" bikes here, 100 000 kms (I'm 500 km from the dreaded threshold lol)
 

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Tom, to clean the injectors properly you need to send them to a specialist with the proper equipment. Over here there are various firms who do it for approximately 拢12 per injector.
 

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I agree it's not a good idea to mess with the butterflies..... they have a grey material painted onto the circular edges and they are precision assembled by the factory......

All I do for T/B cleaning prior to balancing with my Mercury filled 'Vacuum tubes', is spray some upper cylinder cleaner into the small drain holes on the upper surfaces of the T/B's - they can be seen when you lift the airbox off - you can see the excess UCC leak out from a hole down in the intake ports just before the inlet valves. Left to work for 15-20mins prior to start-up and balancing, it dissolves any carbon build up so the balancing can be done perfectly. I have had a small can of Subaru Upper Cyl Cleaner for a decade, so used sparingly it lasts a long time... just as well because it costs >$40 a can.

I never touch or fk with the butterflies....... I only add a measured dose of Injector Cleaner to the last three full tanks before an oil change is due...... eg 1000kms out. 100cc of Valvoline Inj Cleaner ea fill over that 1000km removes all the carbon fluff off the inlet valve stems and spark plugs etc prior to an oil service & tune up. Bike runs like an electric motor when I get it right......

My T/B's are at 15yo and 129k kms and I have never been touched - I spray a bit of lube wherever I can see a moving part, but that's all...... I was told a looong time ago they were a precision part and were not something to be messed with.

(y)
 
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When you say TB never touched, not even throttle sync? Isn't the sync on the service list at some point?
 

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When you say TB never touched, not even throttle sync? Isn't the sync on the service list at some point?
Sure mate, I've adjusted my synchro many times....... fortunately I was trained by my cousin (a pro bike mechanic) who had the patience of a saint ........ but I'm so glad he passed on some of his secrets......... (y)
 

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Not in the Honda handbook .....
Didn't know that, so sync is not a standard service practice - so why do ppl do it, generally speaking? Aside from racing, purely road going bikes, if it's not on the official service list.
 

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Didn't know that, so sync is not a standard service practice - so why do ppl do it, generally speaking? Aside from racing, purely road going bikes, if it's not on the official service list.
The BB will go out of synch slowly over time.... just like all other bikes.. Mine seems to hold it's balance for 12,000kms. Any good workshop will synchro the T/B's as part of a service and tune up - maybe not a Honda sweat shop. It shows up as gruff idle note and vibes in the bars. Not critical but noticeable to some. I spend a couple of hours doing it but a pro would do it much quicker as I stop for :coffee: and lunch and stuff around too much :LOL:.

Doing the synchro always amazes me how smooth the thing becomes - but - it isn't a foolproof procedure as there must be zero air leaks or it may turn out worse........ maybe some shops don't bother as they try to cut the service times down to stay profitable (or feel that owners will complain if they charge for the extra time involved)..... , but as I mentioned, I was shown by an expert tuner (although he didn't regard it as anything special.... just something he did to get the job done - and all bikes need synchronizing except singles or those models with a single intake manifold as used by cars).

Honda probably doesn't consider the adjustment of the air bleeds as an owner friendly task..... so they don't mention it. A set of fluid manometer's is essential equipment, even then it's a dark art to get it set right, considering any wear on the butterfly shafts & seals etc.

I know the factory workshop gauges purchased by the authorized dealers from the manufacturer's can cost thousands of $........ yet they fail to get as good a result as a moderate set of accessory fluid manometer's (ie tubes with hoses in a pool of mercury or whatever is OH&S approved these days). Mine were only $140 or so a decade ago...... when the factory supplied gauges were around $3000 - and not as accurate.

;)
 
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Yep no picky to judge by
Try again please
 
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