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Display Mesage #111875


Bike won't start
Written by mlipmd on 4/1/2012 at 06:36 pm

I did crank it for a while thinking just that but I could never get it started,
even with the fresh battery. My thoughts for the past few days was that no fuel
was getting up there after going though all the electrical stuff, spark, safety
switches, etc. I eventually determined the fuel pump was not operating - not
vibrating, not pumping, no noise, no nothing, even when hooked up directly to
another 12v battery.
I tested the relay, shorted it out (bypassed it) like in the manual and nothing
happened with the pump. I removed the pump and there is a black plastic cap on
one end that comes off after removing one screw, so I just had to look inside
there. There is a set of contact points and a small spring mechanism, just like
ignition points, and they were kind of black and ugly looking, so I cleaned off
both contact areas and made them shiny with some mild sandpaper rubbed between
them, hooked it up to the 12v again, and now it works, works great, pumps gas as
long as there's current flow. So, I reinstalled it, hooked everything up again,
and cranked it enough to allow the gas to get pumped back up into the line to
the carbs, (that does takes a while) and it started up and RUNS GREAT.
I found out a few things taking my bike apart - there's no problem with the
petcock because the PO did the brass Tee mod, and there is a Mitsubishi
triangular logo on the black plastic cap on the fuel pump. I don't know if this
is OEM but it looks the same as the pics in the service manual. Maybe one
supplier makes all of these and puts different logos on them for whoever they
sell them to.
Anyway, thanks all for your input, if anyone else has a problem where their fuel
pump craps out, take it apart as you may be able to fix it. This is probably one
of those things supporting using your bike on a regular basis instead of letting
it sit for an extended period - what in the medical profession we call "atrophy
of disuse". Possibly the low voltage from the initial bad battery caused the
points in the fuel pump to stick together instead of sparking in between - who
knows?
Again, thanks for everyone's help.

--- In ipcrc@yahoogroups.com, "Alfred W" <alfred.wams@...> wrote:
>
> He Marc,
> Since there has been no change made whatever, except the battery being empty,
I suggest you conciser and perform the twenty seconds starting procedure. I had
the same thing when my battery had been completely empty. I have been thinking -
reading about it - that this was a safety feature from the starter relay on the
bike but since there was no further information on that subject I feel more that
it is the fuel-line being completely empty. The running bike asks fuel when the
pump has stopped due to not having had enough electricity. This is all just
guessing for me but have had the same problems. Not cranking for 20 seconds will
not allow to start the bike when it was tipped over or had been run/started
in-vain with almost no electricity.
>
> I wonder if there is any knowledge on the subject from the group and have you
been cranking it for this incredibly long span of time? Alfred
>

Message Thread for message #111875

mlipmd
3/30/2012, 09:49 pm
Bike won't start
My bike has been sitting for a while as I haven't been able to ride for a variety of reasons. The battery was on a trickle charger for a while, I started it and ran it periodically 'till it warmed up maybe every 2 weeks or so, then it sat aga

    pgrwhistler
    3/30/2012, 11:17 pm
    Bike won't start
    pull choke all the way out, do not touch throttle and crank it; when it starts, slowly give it some gas until it starts racing then adjust the choke --- In

      mlipmd
      3/30/2012, 11:54 pm
      Bike won't start
      That's the first thing I did, That's how I usually start it. No go now, just cranks, doesn't catch or even cough. --- In ipcrc

        sr139fox
        3/31/2012, 01:02 am
        Bike won't start
        Check the kill switch, don't ask how I know Dave p --- In ipcrc@yahoogroups.com, "Marc" <mlipmd@...&g

          mlipmd
          3/31/2012, 01:36 pm
          Bike won't start
          I've been clicking it on and off to see if that would clean the contacts and that has no effect. How do you check the switch to see if it's good? You have to remove it? Does that switch in the RUN position make or break a contact (like th

            mlipmd
            3/31/2012, 02:45 pm
            Bike won't start
            OK, I pulled both plugs, they were dry and clean and look good, I freshened them up a little with some fine sandpaper just because I had them out, and reinstalled them. All the fuses are visually intact, nothing burned out. I cannot get t

              yankeesmuggler
              3/31/2012, 03:06 pm
              Bike won't start
              The only way I can get the handlebar cover screws out is with the OEM screwdriver . Nothing else I have really fits. Last year I bought all new screws for the cover. I've replaced my switches several times over the years and last year I t

                mlipmd
                3/31/2012, 03:52 pm
                Bike won't start
                Thanks for that advice about the OEM screwdriver, that worked after some effort. I got the switch out, and that seems to be OK - with a continuity tester there is no contact in the OFF position and there is continuity through the switch in th

                  mlipmd
                  3/31/2012, 04:29 pm
                  Bike won't start
                  OK, so I pulled the right side plug and get a nice blue spark. I assume it would be the same on the left and the bike should still cough or sputter if one cylinder fired, right? What's next, fuel supply? There's a bout a half tank of fresh ga

                    obijuanak
                    3/31/2012, 07:28 pm
                    Bike won't start
                    Have you checked the output of the fuel pump? The diaphragm and the vacuum line of the petcock? I assume you have a known-good air filter in there. Keep at it, you'll get there. Sent from my iPhone On Mar 31, 2012, at 8:29, Mar

                pgrwhistler
                3/31/2012, 06:37 pm
                Bike won't start
                you can pop theswitch out from the top; put a knife edge under theframe and popit up.. --- In ipcrc@yahoogroups.com, Tim D

              alfr4d
              4/1/2012, 04:22 pm
              Bike won't start
              He Marc, Since there has been no change made whatever, except the battery being empty, I suggest you conciser and perform the twenty seconds starting procedure. I had the same thing when my battery had been completely empty. I have been think

                mlipmd
                4/1/2012, 06:36 pm
                Bike won't start
                I did crank it for a while thinking just that but I could never get it started, even with the fresh battery. My thoughts for the past few days was that no fuel was getting up there after going though all the electrical stuff, spark, safety sw

                  mlipmd
                  4/1/2012, 06:38 pm
                  Bike won't start
                  That should have read -Got it fixed. Sorry - There's no way to edit these posts after you submit them. --- In ipcrc@yahoo

                  brianjmcmurry
                  4/16/2012, 12:42 am
                  Bike won't start
                  I hadn't started my bike for a few months. I've kept it on a battery tender. It cranks over but wasn't sputtering or attempting to start. So, I got to the carb intakes and used starting fluid. And, it runs for a few seconds. So, I am conclud

                    wynndungey
                    4/16/2012, 01:22 am
                    Bike won't start
                    Personal experience is that if the bike has been sitting for a while, it will have to crank for a while for the fuel pump to push enough fuel into the carbs. Guess it's possible for the fuel pump or filter to be a problem, but That doesn't s

    hapeacres
    3/31/2012, 04:37 pm
    Bike won't start
    you could also check the kick stand switch to see if that has continuity. --- In ipcrc@yahoogroups.com, "Marc" <

      mlipmd
      3/31/2012, 04:48 pm
      Bike won't start
      If the dash indicator light is on with the stand down, and the light goes out with the stand up, doesn't that indicate that the sidestand switch is good? --- In

        mlipmd
        3/31/2012, 06:16 pm
        Bike won't start
        I just found the connector plug for the sidestand switch and the switch continuity checks out fine up and down, so that's not the problem. And I wouldn't get a spark if it was. So where next? Somebody must have an answer without ripping off a

    glennschechter
    3/31/2012, 07:05 pm
    Bike won't start
    Marc I'm not going to guess what's up w/ your PC, but if it turns out to be your coils, I have both complet sets down to the original boots. They R off a 1998 PC w/ only 9,900 miles that has been in a garage for many years, out of the rain. I

      craigmrihit
      3/31/2012, 07:12 pm
      Bike won't start
      Guys, not to hyjack this thread but I want to vouch for Glenn. I just bought an Ignition control module from him for a great price and it works as he promised. If the OP needs anything Glenns the guy. Craig --- In

        pgrwhistler
        3/31/2012, 07:15 pm
        Bike won't start
        If you got a blue spark on the plug it is probably that you aren;t getting gas?? --- In ipcrc@yahoogroups.com, "Craig

          mlipmd
          3/31/2012, 07:31 pm
          Bike won't start
          Can the outlet of the tank get clogged with something? I can feel the plastic hose leading to the fuel pump under the left side of the trunk lid when it's open and it I feels kind of limp- like it's empty. The only way to look at that is by r

            mlipmd
            3/31/2012, 08:51 pm
            Bike won't start
            Has anyone had to replace their fuel pump or the fuel pump relay? Just wonder how often these fail. I know the ignition system works 'cause I have spark, and all the relay/safety switches work, so the problem now has to be fuel supply. --

              yankeesmuggler
              3/31/2012, 08:57 pm
              Bike won't start
              124,000 miles on Yankee Smuggler I- no fuel pump issues 151,000 miles on Yankee Smuggler II- no fuel pump issues. I am replacing the fuel filter on YS II in April just because it's had 151,000 miles of gas flowing through it and I think i

                pgrwhistler
                4/1/2012, 12:22 am
                Bike won't start
                disconnect the fuel line at the petcock and crank it and see if you get gas going into the petcock; also make sure the vacuum line at the petcock is connected and you have vacuum there..if ok disconnect the fuel line at the carb or petcock ou

    davis_ecd
    4/1/2012, 03:26 pm
    Bike won't start
    My 94 had similar symtoms one time. I had to tow it home from work. After checking everything, I added some fuel and it cranked right up. My co-riders really gave me a hard time on this. But I am positive it was not out of gas. That was the f