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The Honda CA95 / Benly 150 Restoration The little brother to the CA160 in our family of Hondas |
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#1
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Feeler: Carb slide?/sticky throttle
Hi, the carb on my '62 (Rounded bowl) tends to stick at WOT when cold. It's not the cable, it's the slide itself. I know the slide is pretty worn (nicks, worn plating), and I've tried to carefully smooth it down without damaging the remaining plating, but it may need replacement.
Any ideas? |
#2
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I have to ask...Internal throttle control at the handlebar? I have had sticky throttle's due to worn slides.
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#3
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It's the external throttle. The reason I blame the (carb) slide is that after it sticks, if you push it back, the cable goes slack and pushes back inside the carb.
Last edited by comp_wiz101; 12-01-2012 at 12:13 AM. |
#4
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Ok. Yes, I have to agree that a rough slide will stick. You may have to source another slide or have yours machine polished.
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#5
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Any idea where I could find a carb slide?
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#6
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Perhaps another member might know. Regrets on not having an extra.
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#7
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No worries. Oh, I forgot to ask, is "machine polishing" some sort of special process, or am I overthinking it?
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#8
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Maybe a little. You need a buffing wheel and gold or green rouge. You "burn" a finish into the aluminum, which gives it a smooth mirror finish. Thus a "machine polish". You can send it to me and I will do it and send it back.
Postage only. LMK |
#9
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Quote:
I'll pull it off some time over the next few days. |
#10
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Okay, good news:
While the slide is a little worn, it wasn't entirely the problem. The bore on the carb was rather rough and slightly out of round. A little pressure on the outside and the slide would go right in. So, I carefully cleaned and polished the scratches and pitting out of the bore , as well as the rough edges of scrapes on the slide using a dremel and autosol. Now, it's working better than ever. Return is immediate and firm. Thanks for the advice, had you not mentioned polish I probably would've spent another hour staring at it before I got up the courage. |
#11
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Great, I'm glad it works. I knew about applying pressure to the carb slide tube, but was reluctant to suggest doing it. I am afraid of damaging the carb if too much pressure is applied. (just me)
The polish with the dremel is a great idea to smooth out the bore and slide. Happy Trails! |
#12
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I had similar problems form over tightening the carb flange. The slide would stick but release when I took 1/2 turn off of the flange bolts. Also a little Scotch brite in the slide bore could help.
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#13
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The carb on my early Benly is doing the same thing. It is really annoying and makes the bike unridable. The slide is plated so I was thinking the sticking was a result of the finish being worn down. But deforming of the carb body also is suspect so I'll have to give them both some attention on the bench. This is a good subject as these are valuable components.
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