Jump to content

Razorback

Expired Membership
  • Posts

    169
  • Joined

  • Last visited

Posts posted by Razorback

  1. Might be cracked coils. They'll cut up when everything warms up.

     

    Not sure that this is related directly, but I wonder if it's way too rich. Might check all mixture screw settings. Turn each one all the way in, very gently, counting the number of turns exactly, to the 1/8 of a turn. I think we mostly agree that they should be about 2-3 turns out from the lightly seated position (bottomed).

    May not help, but won't hurt to check.

     

     

     

     

    Sent from my iPhone using Tapatalk

  2. You could set idle at 3000 rpm and check voltage across battery, then check from red to black on RR plug (each side) and see if you get much difference.

    Long story short: I have a bad ground somewhere in my harness and wasn't getting full RR output to the battery.

    My thread reply count is about 170 posts getting help on it. You'll get a lot of help on it.

    I you have the time, read through my post. It's about the 4th one down in the First Gen tech talk.

     

     

    Sent from my iPhone using Tapatalk

  3. On my '87, it originates from the neg batt cable as a smaller wire (12 ga?) piggybacked on the main ground, about 4 " from the battery it has a quick disconnect, but continues into the main harness and soon exits the harness to terminate at the coil mounting bracket, right behind the throttle cable cable junction box. On the left side of the frame.

     

     

    Sent from my iPhone using Tapatalk

  4. I agree with Flyin Fool, now that you know exactly what the problem is, you can concentrate on finding it. What I probably would do next would be to:

    1) Unplug the voltage regulator output leads (red, black and brown wires).

     

    2) Connect a jumper from the bike side of the RR plug black lead(s) to 1 pin of a spare car headlight. Then from the other pin on the car headlight connect the positive lead of your battery charger. Connect the negative lead to the bike chassis ground. Turn on the battery charger and the headlight should light. What you have done here is to cause a couple of amps of current to flow through the black wires to where they are connected to the chassis.

     

    3) Then I'd take my DC clamp-on ammeter and follow the path of the current to where the black leads are terminated. I suspect you'll find the connections behind the headlight. You may find a connection that has been hot and is discolored. An infra-red thermometer combined with step 2 above may also help find the dirty/loose connection. Is there a chance you could borrow a clamp on DC ammeter from some where? You also could take your digital meter and measure the voltage where the jumper is connected to the RR black wires...you should read a small DC voltage (connect the meter common to bike chassis). Then you could check all the black leads behind the headlight and see what you read.

     

     

    I have a clamp-on meter somewhere around here.

     

    I shall tear into it sometime this weekend between the honey-do's

     

     

     

    Sent from my iPhone using Tapatalk

  5. I finally got to check the exhaust. Today when I started the bike I notice the two on the rear of the motor got hot real quick. The two on the front didn't get hot until after a couple minutes of running. Nothing like the rear two exhaust.

     

     

     

    .

     

     

     

     

     

    Thanks again for your help.

     

     

    Mine does this as well currently. Not sure about why.

     

     

    Sent from my iPhone using Tapatalk

×
×
  • Create New...