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Discussion Starter · #1 ·
Good evening guys and gals,I have a 1981 honda cx500c,I bought to restore been sitting 5 yrs.ok got the carbs rebuilt and sync,I flushed tank and added new filter I dont have air box installed yet,but the bike starts and runs somewhat good,the left cylinder gets really hot to touch where the right is warm.Ive removed both water pump and thermostat and replaced thermostat and the orings the pump all looked good i replaced the oring seal.my stator is putting out 15.3 at 4000 and 12,6 at idle new plugs new intake boots.need help thanks,mike
 

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Discussion Starter · #3 ·
Good morning,so your are saying even if i have exhaust coming from the right pipe as I do from left,the bike will idle and excell.I will remove carbs and check the float level make sure 15.5 mm thank you so much,mike
 

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Good morning,so your are saying even if i have exhaust coming from the right pipe as I do from left,the bike will idle and excell.I will remove carbs and check the float level make sure 15.5 mm thank you so much,mike


Yes.You are still getting some combustion but not the correct combustion.When they are correct both sides will have equal temperature and if you carefully place your palm at the back of each one when running so and not to burn yourself you should feel the same amount of exhaust gas being pushed against your hand at the same temperature.

Don't be concerned about the two sides sounding slightly different even when correct.This is a by-product of the unusual engine and exhaust design which is more complicated than people may think
 

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Discussion Starter · #5 ·
ok I have even flow out the exhaust but the exhaust temps are really close together but the left cylinder is way hot, right is warm this is to the touch of pipe right at cylinder.my floats are at 15.6.the idle mixture screws are where they set them at.im gonna try to set it on fire and see if someone will put it out lol!!!!! this bike is a project i think ill take the engine out and start from scratch.oh the exhaust temp on left is 98.7 and the right is 87.9 and at the cylinder head well i didnt check um that was dumb. i will recheck all the basics are per all you nice people on this forum because im telling ya, you all are smarter than me.anyway enough jabber thanks for the help,mike
 

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Discussion Starter · #7 ·
[quote name='Shep' date='30 May 2011 - 03:00 AM' timestamp='1306753203' post='77635']

If the plug states are the same and correct next I would look at doing a coolant system flush including the Radiator,



http://www.pdsrecording.site90.com/cxgl500/Coolant.htm



But I have to suspect the Carbs may need another deeper cleaning,



http://globalcxglvtwins.hostingdelivered.com/viewtopic.php?f=19&t=1



and always make sure there's no carb boot air leaks.

[/quoteGood morning Shep,well Ive done removed coolant and the radiator,I think my problem is with carbs even if they have been gone through im going to put on all my new intake boots and then airbox cause that wasnt on,maybe not enough fuel getting in right cylinder because air box not on.thanks for all your help,mike
 

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The Air-box and filter are an integral part of the carburation system not only allowing the correct vacuum velocity at the Carburettor intakes but also balancing it.It is also part of the engine blow-back oil pressure release system recycling some of that.



I clean my air box assembly out if crudded up using boiling kettles of water after 1st mashing some washing up liquid around in there with a nylon dish washer brush with the drain plugs out of the overflow pipes until all clear.Then dry out with some loo roll.
 

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I vote for the carbs too, that or a vacuum leak causing the lean/run hot condition.
 

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Discussion Starter · #10 ·
well I clean every inch of bike with deep purple power then wash and blow dry each part before installing.ok i think im getting it now the air box assembly must be installed so tommorrow i will install all neccessary stuff to get to that point.thanks again uys for your help,mike
 
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