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Batteryless xs650 capacitor fell off during ride

Discussion in 'The Garage' started by Anthony1993, Jul 20, 2019.

  1. Anthony1993

    Anthony1993 XS650 Enthusiast

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    im not sure if i have a rectifier/ regulator combo honestly. i bought this bike with a bunch of parts as an uncompleted project and the rectifier was already on the bike.
    ill take a pic and post it, maybe you guys will be able to tell me .
     
    gggGary and Jim like this.
  2. Anthony1993

    Anthony1993 XS650 Enthusiast

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    if there is a break in the wire it has to be inside the rectifier because theres only about 4 inches of wire sticking out from the rectifer. im not sure how i could have tested it wrong. i checked it multiple times. did every ver betum per jims video. but i am new to this so anything is possible .
     
    gggGary and Jim like this.
  3. Anthony1993

    Anthony1993 XS650 Enthusiast

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    I'm pretty sure it's a regulator/rectifier combo but I always assume i dont know everything
     
    gggGary likes this.
  4. Jim

    Jim People will come Ray, people will definately come. Top Contributor XS650.com Supporter

    Well, I'm not a PMA expert... but the extra green wire does suggest it's a combined unit.
     
    gggGary likes this.
  5. 650Skull

    650Skull Dinosaur Lives Top Contributor

    I'm not a PMA guy at all........Hopefully some of the PMA guys might chime in

    I do know they are a Combined Reg/rect units.......Some have 6 wires and some 5........

    A link explaining why a 6 wire and what to do with the 6th wire..........i couldn't say what wire goes where, meaning on the red/black/green........one goes to negative battery and the other 2 can be tied together to the positive.......Should get confirmation on this info
    http://xs650temp.proboards.com/thread/14040/recs-permanent-magnet-alternator-swaps

    A link to mikesXS XScharge Reg/Rect for PMA........5 wires
    https://www.mikesxs.net/yamaha-xs650-xscharge-pma-rectifier-voltage-regulator-replacement.html

    Here is a guys wiring diagram for PMA from Chopcult.....5 wires
    http://www.chopcult.com/forum/showthread.php?t=5336

    From Hughs handbuilt..........test your PMA and have a look at "MOSFET regulators and why".........probably worth a bookmark
    https://www.hughshandbuilt.com/blog/
     
    gggGary likes this.
  6. Anthony1993

    Anthony1993 XS650 Enthusiast

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    Hey thanks guys! I'll definetly look into that! I know that when I had my bike running a few weeks ago I was left with one extra wire and that was the green one. And not knowing what to do I just grounded it and it worked great . But hopefully someone can declare whether or not my rectifier/regulator is bad or good. Because I'd love to get this thing down the road again
     
  7. gggGary

    gggGary Stop that! Top Contributor XS650.com Supporter

    Grounding that green is likely the heart of your problem.
    As a trial ( we can't KNOW how to wire with out a part number) Try ungrounding the green and tying it to the hot instead.
    Has this system ever functioned properly ( verified with a volt meter)?
    PMA Install- Voltage too high- 6 wire regulator
     
    Last edited: Aug 4, 2019
  8. mike in idaho

    mike in idaho XS650 Enthusiast

    That looks a lot like the rectifier on the Sparx 3-phase set up on my norton. You need resistor spark plugs or plug caps for them to control the voltage correctly .
     
  9. Anthony1993

    Anthony1993 XS650 Enthusiast

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    Hey guys. I just put my new rectifier on the bike and I'm still getting no spark.
    New rectifier, new coil, new capacitor. Checked all wires , good.
    Spark plug wires good. Wires coming from pamco electronic advanced timing, good.

    I dont know what to do.
    For the heck of it I tried checking continuity between resistors on the green pamco board and some of them I'm getting continuity and some I'm not.
    Is this normal?
    How do I check the board?
     
  10. Anthony1993

    Anthony1993 XS650 Enthusiast

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    Ok so it ended up being the pamco. I was getting 12v in through the red wire but only 5.8v going out of the green wire to the coil. Bought a new one and bike started up 3rd kick.
    The thing is that I noticed at idle the left exhsust pipe was running at normal temperature but the right pipe was pushing cold air out?
    When I gave it throttle the right pipe was back fire a bunch. I let it idle till the motor was warm and the carbs ran out of gas, thus killing the motor. And now it won't start again?
    I'm getting good spark in both plugs.
     
  11. JRay77

    JRay77 XS650 Addict

    This is a long thread. Apologies. I didn't read it all. Still using a capacitor? Not a fan. Especially if your bike is some kinda custom and has excessive vibration. I don't give a shit what the sellers say about rubber mounting or the spring mount for the capacitor. They will fail especially that black one the Bros and Mike sells. Freaking sensitive p.o.s. Fart vibration will cause it yo fail. Haha! More recently I have found the antigravity battery with the right shunt style reg/rec combo is rugged and reliable. The way to go. Expensive, yes but it's likely you'll keep buying caps.

    Now on your more recent post. If your getting spark, then it'd be a fuel issue. Be careful testing for spark with a Pamco. I clip a jumper cable to the plug and ground the other end WELL! You will pop that lil transistor. I like to use a timing light to check for spark and it's safe. Do you know how to sync carbs? What kind of exhaust? What kind of air filters. Take a video. Post it here.
     
  12. Anthony1993

    Anthony1993 XS650 Enthusiast

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    No need to read much of the beginning part of the thread, the spark issue has been resolved.
    I didn't not know that about capacitors! And my bike has TONS of vibration, thanks for the tip. I'm running the black one from tc bros, do you have a recommendation? Anti gravity battery and new reg?
    Air filters are xs pod filters, exhaust is chopped and baffles removed.
    I havnt looked into syncing them yet. It was running fine before my cap came off. Now I'm getting all these weird issues
     
  13. arcticXS

    arcticXS XS650 Junkie

    Stock CV carbs? I assume you have MikesXS K&N knockoffs. Oval & tapered with "XS something" embossed on the chrome end cap? These filters and a "chopped" exhaust is not a good setup for a good running XS. As a minimum, get some UNI FOAM pod filters instead. And a proper exhaust won't hurt either.
     
    JRay77 likes this.

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