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Ford 9N, 2N & 8N Discussion Forum
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OT Honda motorcycle ?

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pikewi

06-28-2013 06:05:01




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Hey guys. Can't find a good bike board but you always come through with the OT stuff.

Anyhoo, I have a few old Honda bikes and my 78 400A has a problem. When I open up the throttle it just bogs down. It runs well at slower speeds but if I try accelerate quickly it wants to shut down. I suspect a fuel delivery problem but don't know what to do about it. Any ideas?

Thanks

Pike

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pikewi

06-29-2013 05:28:43




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 Re: OT Honda motorcycle ? in reply to pikewi, 06-28-2013 06:05:01  
Tried all the above and problem remains. Will try hondatwins.net. Thanks
I am with old. Those carbs are a bugger.

Pike



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Britcheflee

06-29-2013 07:08:30




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 Re: OT Honda motorcycle ? in reply to pikewi, 06-29-2013 05:28:43  
On those older carbs check the gasket between the carb and the engine - you might be losing vacuum there.



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Duner Wi

06-28-2013 09:42:15




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 Re: OT Honda motorcycle ? in reply to pikewi, 06-28-2013 06:05:01  
If you take the carbs apart check the diaphragms with a bright light to see if you have a hole in them. I assume the carbs have diaphragms.



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pikewi

06-28-2013 09:18:07




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 Re: OT Honda motorcycle ? in reply to pikewi, 06-28-2013 06:05:01  
OK Thanks. I think the filter is OK. Will check the choke. This bike has only 5400 mi. on it but I will clean carbs. I had to do that on my CB 450 and took me 2 days. (failing eyesight).

Pike



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old

06-28-2013 08:34:05




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 Re: OT Honda motorcycle ? in reply to pikewi, 06-28-2013 06:05:01  
When was the last time you cleaned or replaced the air filter??? If clogged it will cause that as will a choke not opening up all the way. Do not know that bike as such but have 2 CB360Ts plus a CL350 and a CB550 on the place and also a Yamaha 750 special



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Duner Wi

06-28-2013 09:39:30




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 Re: OT Honda motorcycle ? in reply to old, 06-28-2013 08:34:05  
Old, ever have any cam chain tensioner problems with your 360T's??



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old

06-28-2013 18:49:28




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 Re: OT Honda motorcycle ? in reply to Duner Wi, 06-28-2013 09:39:30  
No never had had any problems out of it in that way. Carbs on the other hand I hate them



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Duner Wi

06-28-2013 18:54:29




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 Re: OT Honda motorcycle ? in reply to old, 06-28-2013 18:49:28  
Thanks.



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husker44a

06-28-2013 07:30:28




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 Re: OT Honda motorcycle ? in reply to pikewi, 06-28-2013 06:05:01  
Remove carb disassemble as much as you can. Pay attention how the air screws come out. Count the revolutions while screwing them IN. So, if the air screws in one and half turns IN then stops. That's where it NEEDS to be when assembly is made. Just screw the air jet IN UNTILL LIGHTLY SEATED then screw it out one and half turns. It's set !!!! Remove everything you can. Being careful of the float bowl gasket as it may break . No big deal as any Honda motorcycle shop can get the gasket. After you remove the float bowl there's a main jet and the float , needle valve. Carefully remove those parts. Get a can of GOOD carb and choke cleaner. Spray everything. Including the holes in the carb. They are vents. That must be open and clean. Clean the needle and main jet. Small holes in main jet must be clean and free of the smallest amount of dirt crud. Install everything. Clean!!! May want to remove and drain and flush the tank clean too. Install a fuel filter. New gas lines. Go ride !!!! Oh clean your air filter too or replace!!!

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Maineman

06-29-2013 05:14:13




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 Re: OT Honda motorcycle ? in reply to husker44a, 06-28-2013 07:30:28  
Hondatwins.net is a good place to go for old Honda advise.

Joe



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