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  1. Firing on one cylinder

    Technical Help Forum
    New bike to me starts and idles but it’s choppy. First day I cleaned the carbs, and replaces the Spark every project. Still wast running great, so I unplugged the plug caps one at a time and the left hand cylinder isn’t firing. Should I replace the ignition coils? What’s my plan of...
  2. Jet Sizes with Modified Intake

    Technical Help Forum
    Hey guys, Looking forward to getting back out in this beautiful weather. I have modified my air intake on my GL650. Best I can describe it as is a large conical mono-pod filter. Basically I have removed the factory airbox, but kept the connection from the carburetors to the airbox. I then put a...
  3. Gas won't get to the engine

    Technical Help Forum
    Hello everyone, I recently got my hands on the old cx500 custom 1980 that I used to ride when I was in high school. My sister had it at her place for about 6 years and it hasn't run in almost 3 years. Before they put the bike away it ran perfectly. The carbs had been cleaned, the clutch plates...
  4. Running Nightmare

    Technical Help Forum
    Hello everyone, I have been stuck on this problem for a week now and have found absolutely nothing that is improving the issue. I cannot get my bike to run properly at all My Right Cylinder: Oval Pod Filter 90/120 Jets 2 1/2 Turn Fuel/Air Mix Screw Running Strong Strong Vacuum (bottle...
  5. Looking for a custom model tank. Trade/buy

    Selling and Buying Forum
    Hey guys, I'm on the hunt for the smaller custom model tank. I have the 78' standard tank that I'd like to trade but may be interested in buying one if the price is right. Let me know what you've got. Thanks
  6. 1980 CX500C will crank but wont start.

    Technical Help Forum
    A few days ago I was riding my bike around and it ran out of gas (fortunately on my drive way.) So I took a trip into town and got 5 gallons and filled her up. Now she wont start though. I checked the spark plugs, ignition coils and fuel line. They're all fine. The bike is mechanically and...
  7. Looking for CX500 Standard or Deluxe Fuel Tank

    Selling and Buying Forum
    I am looking to change the tank on my '79 500C to the larger tank from a Standard or Deluxe. Please let me know if you have one for sale and what you would want for it. Thanks!
  8. Need Odd Part For Carbs

    Selling and Buying Forum
    Hi there everyone, I have started work on my 1978 CX500 and found some really good parts from my local motorcycle wreckers. I purchased a set of very clean carbs of an 81 GL500 the only issue is they are mounted closer together than on the 1978 CX500. I have all the pieces to mount them farther...
  9. RPM issues, when in gear

    Technical Help Forum
    I have an '81 Honda Cx500 custom. I am having some issues with her though. When I am in gear it won't go over the 3 on my rpm gauge. It hits about 2 1/2 and then kicks around and starts to buck like a bronco. I have some backfiring when it starts, when I have it in neutral it seems to be able to...
  10. I can't start my motorcycle....

    Technical Help Forum
    My list of problems continues. This is a good learning experience! Okay, my bike has been running fine for months since I replaced the alternator in order to get the full potential out of it. But last week, I went down in the morning (London, 7:30am about 8 celsius (45 fahrenheit)) and the...
  11. Fueling Question

    Technical Help Forum
    Hey all, I just got an '81 CX500 Custom and am wondering about filling it up. I have ridden it to just under 100 miles now, was told 100 miles was where I would hit reserve, so I got to 76 miles and went to fill. I am wondering what gas mileage I should be expecting on it, I put in 1.6 gallons I...
  12. Fuel in the Airbox

    Technical Help Forum
    Hello everybody, new to the forum and motorcycles in general. Thanks in advance for taking a look, I searched the forums for a solution but couldn't find any answers. Bought an 81 cx500 deluxe a few months ago, Been cafe'ing it ever since. The PO, who had the bike for 2 years, said he only ran...
  13. No acceleration and stalls at high rpms

    Technical Help Forum
    Hello again everyone, So about two weeks ago I rebuilt my carbs from the ground up. Cleaned everything, replaced all the worn out parts and put it back on my 1980 cx500c. It ran like a dream! However, 2 days ago I was doing some heavy accelerating and after shifting to 2nd gear (from about...
  14. new need help geeting it to run

    CX500 & CX650 Turbo Forum
    Hi all i am the new owner of a 1983 cx 650t , my father bought it brand new and it has been sitting for about 22 years . I changed the engine oil and fillter made a new foam air filter drained the fuel tank but new fuel in it a new battery also. bike would not start i check the fuel presure by...
  15. Wanted: CX500 Deluxe Gas Tank

    Selling and Buying Forum
    soooooo... This weekend i had the lovely pleasure of having a driver do an un-signaled u turn in front of me. Needless to say his car suddenly became a large wall I just couldn't avoid. Many things were destroyed on the bike. All replaceable. The only thing I'm having issues finding is a decent...