Announcement

Collapse
No announcement yet.

What does this sound like ?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • What does this sound like ?

    So I've changed out the coils , the rectifier , The petcock, spark plugs, the gas, fuel pump and filter. the bike cranks tries to start but dies after about 5 seconds running. So I put the charger on the battery because it started to wear down from cranking. I leave it on the battery about 5 minutes . The bike starts right up. I remove the charger leads and the bike is running good. it runs about 2 minutes and dies. I try cranking but like before it fires but wont stay on. I put the charger back on for about 5 minutes and then fire it up. it starts at the touch of the starter. I again remove the charger and it runs about 2 minutes and dies. ( like its out of gas ) . so as long as the battery is charged it runs but when it runs out of charge it dies. STATOR ? PICKUP ? what does it sound like to you ?

  • #2
    If it is one of these how do i check them ?

    Comment


    • #3
      You need a DC volt meter to determine the charge rate from the system to the battery.

      Comment


      • #4
        What Ron said. Sounds like a dead battery and no charging current. When it drops below about 8,5 volts it dies because the ECU shuts off to protect itself.


        Wherever you go in life, ride there if at all possible.

        Comment


        • #5
          charge the Battery and have it load tested before doing anything else. You may save yourself some time messing with anything else.

          Comment


          • #6
            Sounds like the Stator to me.

            Comment


            • #7
              Originally posted by davej View Post
              charge the Battery and have it load tested before doing anything else. You may save yourself some time messing with anything else.
              This^^^^^…and possibly the Stator.

              If the battery is good, or you have to put a new battery in, start the bike and open the throttle to about 2500rpms. If the Stator is working, the voltage at the battery should be between 13.5 and 14 amps. If it’s not charging it’ll stay 12ish and be losing the charge as the bike runs.
              There is a test for the stator also. I would think the yammie dealer you took it to before when everybody was stumped(your thread from a week or so back)would have checked the Stator, but????

              Comment


              • Bikerron
                Bikerron commented
                Editing a comment
                If the Stator is working, the voltage at the battery should be between 13.5 and 14 amps. If it’s not charging it’ll stay 12ish and be losing the charge as the bike runs.
                He meant volts, not amps.

              • SKWEARpeg
                SKWEARpeg commented
                Editing a comment
                Yeah. I mean volts, not amps. It was early.

                ...face in palm.

            • #8
              Good ideas thanks all. I haven't actually taken the bike into the dealer just talked with the service manager and he was stumped. Told him all the things that had been replaced. But now ive got it narrowed down to A) battery B) Stator C) pickup coil. will borroe a voltmeter and go to work, actually going to pick up a new battery because this one is at least 2 years old probably a lot more, Ive had the bike for 2 years so its at least that old. .

              Comment


              • #9
                Always best to start with the simple things. You can take the battery to a local Autozone / ORielly's/ Etc. and they will test it for you.

                Comment


                • #10
                  I would do that first.
                  Peace,
                  Baron Wilhelm Gustav von Schmidt III
                  (But you can call me Joe)

                  Comment


                  • #11
                    Plugged fuel filter or crap in carb bowl? The five minute wait allows the bowel to fill. Clean and add some Seafoam.

                    Comment


                    • Doc_V
                      Doc_V commented
                      Editing a comment
                      Good point. If the battery checks out this would be my next step.

                  • #12
                    Just had the tank off and emptied, new fuel filter and pump and petcock. Have a new battery purchased and just waiting to pick up on Wednesday. Had carb apart and checked over to make sure all was as it should be this weekend. Tank was emptied and cleaned out. .

                    Comment


                    • #13
                      Will update Wednesday evening or Thursday morning after I put the new battery in and check voltages

                      Comment


                      • #14
                        The bike is 17 years old it probably needed all those new parts anyhow.. Taking it on a trip in June to El Paso from South Carolina.

                        Comment


                        • #15
                          Sounds like the battery to me, that would be the first thing i would check, then the charge voltage
                          Sometimes it takes a whole tank of gas before i can think straight

                          Comment


                          • #16
                            SO i'm home and I checked trhe new battery showing 13.15 volts good to go... drop it in fires up runs abpout 20 seconds and quits. the battery is down to 12.05. Crank it again it fires up have the volt meter on it and its charging the battery. 12.46 and climbing ...so that tells me the stator is good ... ? ... I unplug the pickup coil and check with a volt meter its at 303 so thats between the 278 and 3XX that the book says it should be so I'm lost stators good, pick up coil good, new battery, new coaster enricher , new coils, new fuel pump, new fuel filter, new air filter, new rectifier, new spark plugs, new fuel tank petcock, fresh gas, , took carb off checked the intake, opened up carb and checked the needle and set, took all jets out one at a time and made sure they were clean and open, ... I'm stumped, it runs for a minute then shuts off ???? what am I missing., I guess the next place is to take it to the dealer unless one of yall has some other idea that we havent tried.

                            Comment


                            • #17
                              When you took the carb apart, did you remove, inspect, and clean the float needle and jet seat? It looks like this:

                              Click image for larger version  Name:	192233d1367716167-mikuni-carb-overflow-needle.jpg Views:	1 Size:	29.1 KB ID:	11898
                              The black pointy end is made of rubber, and that rubber will wear out over time. It can cause the needle to stick and limit fuel flow into the bowl. Like Shores said, at start up the bowl is full... Then the fuel burns off and instead of refilling the float bowl, the fuel just trickles in and starves the motor... Then while it sits for a moment, the bowl fills back up and the process repeats.

                              If you didn't remove it last time, when you pull it out, check the cylinder it sits in too. The cylinder can get gummed up from old gas and prevent the needle valve from sliding freely.

                              I'd also check the float level while you're at it. If you did remove it last time, you may have bent the spring, effecting the fuel level in the float bowl.
                              Last edited by Doc_V; 04-04-2018, 11:25 PM.

                              Comment


                              • #18
                                Originally posted by Doc_V View Post
                                When you took the carb apart, did you remove, inspect, and clean the float needle? It looks like this:

                                Click image for larger version Name:	192233d1367716167-mikuni-carb-overflow-needle.jpg Views:	1 Size:	29.1 KB ID:	11898
                                The black pointy end is made of rubber, and that rubber will wear out over time. It can cause the needle to stick and limit fuel flow into the bowl. Like Shores said, at start up the bowl is full... Then the fuel burns off and instead of refilling the float bowl, the fuel just trickles in and starves the motor... Then while it sits for a moment, the bowl fills back up and the process repeats.

                                If you didn't remove it last time, when you pull it out, check the cylinder it sits in too. The cylinder can get gummed up from old gas and prevent the needle valve from freely sliding, now allowing enough fuel to flow.

                                I'd definitely revisit that bad boy.
                                I’d be unfortunate if after all your replacement parts it was something small like the needle! Replacing items without testing them first can be a waste of money.

                                Comment


                                • #19
                                  . drop it in fires up runs abpout 20 seconds and quits. the battery is down to 12.05. Crank it again it fires up have the volt meter on it and its charging the battery.
                                  When you started it the first time did you have the meter on the battery showing 14+ volts charge rate when it died the first time?

                                  Something sucked that battery down to 12.05 V.

                                  Comment


                                  • #20
                                    Originally posted by Airlordd1 View Post
                                    The bike is 17 years old it probably needed all those new parts anyhow.. Taking it on a trip in June to El Paso from South Carolina.
                                    you should stop by the clinic M&G in Celina, OH the week end of the 23rd.....I'd say change the battery and if that's it keep the other parts for the future - ride it 1,000,000 miles!!!

                                    Comment

                                    Latest Posts

                                    Collapse

                                    Topics Statistics Last Post
                                    Started by Doc_V, 7 hours ago
                                    6 responses
                                    88 views
                                    0 likes
                                    Last Post Doc_V
                                    by Doc_V
                                     
                                    Started by Smokescreens, 06-17-2020, 09:49 AM
                                    11 responses
                                    162 views
                                    2 likes
                                    Last Post Smokescreens  
                                    Started by MrG, 1 hour ago
                                    1 response
                                    11 views
                                    0 likes
                                    Last Post Shores
                                    by Shores
                                     
                                    Started by Flyinfish, 5 days ago
                                    23 responses
                                    130 views
                                    0 likes
                                    Last Post 2time
                                    by 2time
                                     
                                    Started by gonzarelloz, 15 hours ago
                                    11 responses
                                    46 views
                                    1 like
                                    Last Post 2time
                                    by 2time
                                     
                                    Started by Shores, 1 week ago
                                    33 responses
                                    310 views
                                    1 like
                                    Last Post JimH
                                    by JimH
                                     
                                    Started by JoeX, 4 days ago
                                    18 responses
                                    142 views
                                    2 likes
                                    Last Post JimH
                                    by JimH
                                     
                                    Started by mariner3302, 4 hours ago
                                    2 responses
                                    30 views
                                    0 likes
                                    Last Post mariner3302  
                                    Started by Galcanised, 1 week ago
                                    17 responses
                                    163 views
                                    5 likes
                                    Last Post EP Roadie  
                                    Started by MrG, 3 weeks ago
                                    12 responses
                                    170 views
                                    0 likes
                                    Last Post LUV4RS
                                    by LUV4RS
                                     
                                    Started by Lug Nut, 1 day ago
                                    17 responses
                                    246 views
                                    1 like
                                    Last Post Littlebull  
                                    Started by McVinny614, 1 week ago
                                    6 responses
                                    134 views
                                    0 likes
                                    Last Post Sharpman66  
                                    Started by chromax, 5 days ago
                                    11 responses
                                    230 views
                                    2 likes
                                    Last Post Sharpman66  
                                    Started by MikeyC, 2 days ago
                                    8 responses
                                    93 views
                                    0 likes
                                    Last Post Sharpman66  
                                    Started by Lug Nut, 3 days ago
                                    2 responses
                                    135 views
                                    3 likes
                                    Last Post Sharpman66  
                                    Started by MikeyC, 2 days ago
                                    12 responses
                                    121 views
                                    0 likes
                                    Last Post Sharpman66  
                                    Started by Lug Nut, 2 days ago
                                    4 responses
                                    85 views
                                    2 likes
                                    Last Post Sharpman66  
                                    Started by GreenMachine, 08-13-2020, 12:19 PM
                                    242 responses
                                    2,489 views
                                    3 likes
                                    Last Post GreenMachine  
                                    Started by Shores, 3 days ago
                                    9 responses
                                    204 views
                                    0 likes
                                    Last Post Blackcloud12  
                                    Started by Blackbeard, 1 day ago
                                    3 responses
                                    58 views
                                    0 likes
                                    Last Post davej
                                    by davej
                                     
                                    Working...
                                    X