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Thread: New CX500

  1. #41
    Member TacoJockey's Avatar
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    My rides keep getting shorter and shorter. I made it to the end of the drive way today. Got it to the end of the driveway, wasn't paying attention and accidentally killed it. Tried to start it and couldn't turn it over, battery is dead. Grabbing a new one tomorrow morning. I'm about to donate this bike to the Ohio river.

  2. #42
    Senior Member rscottp's Avatar
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    Hang in there!
    1981 CX 500 Deluxe
    1986 Yamaha Radian YX600
    Martha'a Vineyard, Ma

  3. #43
    Senior Member purplecx500's Avatar
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    Hazardous Waste .
    SideCar Bob's settings. http://cx500forum.com/forum/general-...ould-make.html
    Main Wiki you can search by topic: http://cx500forum.com/mediawiki/inde...itle=Main_Page
    Old rant http://cx500forum.com/forum/general-...me-advice.html
    St
    StatorTest;;
    http://cx500forum.com/mediawiki/inde...itle=Main_Page
    'Eager" 1979 CX500C Maroon.
    Named for the way it runs/sounds @ 65 +

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  5. #44
    Senior Member MobileAZN's Avatar
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    Sounds almost like the tank isn't breathing and you are getting a vacuum in the tank not allowing the fuel to flow.
    1980 Honda CX500 Custom (In a pile of parts, current project)

    1981 Suzuki GN400CR (Cafe Racer, current ride)
    1976 Honda CB125S1 (Full original restoration. Sold her and miss it. Every. Single. Day.)
    1972 Honda XL250 (In a pile of parts, missing a ton, working on it when I'm waiting on parts for the CX)

  6. #45
    Member TacoJockey's Avatar
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    Once I saw it wasn't getting fuel I opened the tank to see if that was it and it still wouldn't send any through.

  7. #46
    Senior Member purplecx500's Avatar
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    thru the hose/petcock or carbs ?
    SideCar Bob's settings. http://cx500forum.com/forum/general-...ould-make.html
    Main Wiki you can search by topic: http://cx500forum.com/mediawiki/inde...itle=Main_Page
    Old rant http://cx500forum.com/forum/general-...me-advice.html
    St
    StatorTest;;
    http://cx500forum.com/mediawiki/inde...itle=Main_Page
    'Eager" 1979 CX500C Maroon.
    Named for the way it runs/sounds @ 65 +

  8. #47
    Member TacoJockey's Avatar
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    I opened the tank and no fuel to the fuel filter. As soon as I took the hose off, there was fuel coming out the petcock. When I put a hose on it with no filter and rerouted the hose it started and flowed fine. I had to route the hose around the outside the top of the card. That's currently how I have it set up because I don't know how else to do it with this new petcock.

  9. #48
    Member TacoJockey's Avatar
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    Update:
    Went on a 11.5 mile ride today, probably about an hour long or a little less. Didn't stall out on me, leave me stranded or anything like that but still running rough on acceleration. If I keep the throttle less that about 25% it will accelerate fine, anything above that it sounds like it's firing on one cylinder. Generally, if I'm moving riding and keeping the rpms around 3-4K it sounds healthy for the most part, give it some throttle it will start to sputter around 4500-5500 rpms. Then it kind of seems like it goes to once cylinder. I'm kind of at a loss of what to do.

    Also, sitting at idle, it will pop/crack every few seconds. While coming to a stop, in gear, letting it rev down it will start popping/cracking quite a bit. Could it be that I need to adjust my needles? Maybe it's rich or lean?

    I am also running about 93 octane currently, I normally put 87 in it. While I was out riding and got stranded I thought I was out of fuel and that's all that this guy had that was helping me.
    To recap:
    Changed our both spark plug caps
    Carbs are clean as a whistle
    Stator test is good
    New battery
    Manual petcock that is flowing fine
    Air filter looks clean

    Any thoughts from the gurus?

  10. #49
    JC
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    Super Moderator JC's Avatar
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    Did you do the stator test once symptoms appeared?

    What jet sizes have you got? Which sizes are in which location? (i.e. which is screwed into the brass and which the aluminium body)

  11. #50
    Member TacoJockey's Avatar
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    My first ride it was accelerating bad before and after it died on me, once I got it going again. After that first ride I did the test, and it was spot on. That spark plug cap wasn't getting any ohms or continuity, that's what I chocked it up to with it dying anyway. While it was down waiting on parts that's when I did the test.

    As far as I know the jets are stock, the PO didn't mention to me that the jets or needles are different.

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