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Discussion Starter · #1 ·
Hi, I'm currently trying to get my 1980 CX500 to run after being stored for about 10 years. It was previously running well and has only done 10,000 miles from new.

I have good compression and spark. Clean air filter and new fuel.

I discovered that the carbs were clogged with dried petrol residue and hard varnish like material

The carbs are now cleaned and jets are clear. The pistons and needle valve were also stuck but are now clean a moving freely. Both float/float valves are also now working.

I can run the engine for a few seconds and rev it, using "easy start gas" through the carb air intakes. It also runs (badly) on full choke for a few seconds but if I touch the accelelerator the engine stops.

It doesnt fire at all without choke.

Have I omitted to clean something perhaps? Any ideas would be most welcome. Thanks, Bill
 

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As the bike as been neglected for such a long time you will have to treat it as a full service.

1st things 1st.With a container handy take the fuel pipe off and turn on the petcock.Does the fuel flow well?



Clean ALL electrical connectors and change the spark plugs.



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

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



Has the battery been checked/replaced?



A full and proper carb cleaning will be required,



http://globalcxglvtwins.hostingdelivered.com/viewforum.php?f=19&sid=7c653a084686a88b5839449b9fa583ad
 

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Discussion Starter · #6 ·
After following the many and detailed instructions above, the CX roared back into life earlier today. Still a bit lumpy but that's down to fine tuning now.

Realising the importance of cleaning every last vestage of dried petrol, I may now have the carbs professionally cleaned using an ultrasonic cleaner. Thanks for all your help, this is very much appreciated. Bill.
 

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the carb guru does a great job on cleaning carbs.....his name is larry he is selling a book on how to clean carbs in the selling and buying forum you should check it out
 
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