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Topics - peteb

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CB350/400 / voltage regulator
« on: September 05, 2011, 08:14:49 PM »
hi ive had an intermittent problem with the electrics where the bike stops running suddenly.when it has stopped there are no lights up ie ignition or oil light,a quick fiddle around with the fuse and of it goes again ihave checked all the fuses connections etc but there doesnt seem to be any problems while i was doing this i noticed that the rectifier was hot to the touch so i decided to check the charging volt and current. the voltages at the battery are as per the book but the current was about 7amps rather higher than the recomended 4 amps .it is better with the lights on but still high.do you think this over charging could be making the rectifier break down temporarily causing the bike to cut out.is the regulator volts only or is it volts and current.how warm should the rectifier get.when i went for a run with the lights on it ran ok.

any help would be greatly appreciated

thanks peter

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CB350/400 / fueling problems
« on: July 03, 2011, 06:08:11 PM »
hi im just starting to find my way round the site and have posted this plea for help some where else but i think it should be here so here goes again.I have just finished restoring a 400/4 and would love to enjoy riding it but i cannot get it to run properly.

from cold it starts easily and ticks over fairly well .when its warm if you crack the throttle open sharply the engine wants to die,if you open the throttle gently it will rev ok. it is not nice to ride in traffic as at low revs it seems a little gutless.

Ihave had the carbs ultrasonicly cleaned,fitted new jets etc,checked float heights,tried different neadle positions all the usual things

It does run better on half to three quater choke so would suggest weak mixture but the plugs look a little rich .

I have also fitted new coils,cam chain and tried timing as per book and alittle more reterded but nothing seems to make much difference.

In 40 years of fiddiling with things mechanical I dont think ive been so frustrated


HELP PLEASE

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