RN SJ wont start

Discussion in 'Tech Discussion' started by josh, April 20, 2009.

  1. josh

    josh Member

    Have done a search, and not found a great deal yet.

    The last few times I took it out i noticed a bit of hesitation in accellerating. this weekend, i went out and it was perhaps a little bit worse. Later, I tried giving my MRS a lesson on it (was worth the laugh) and it wouldn't start when she came back from an incredibly slow pootle on her knees. I replaced the plugs with some brand spankers, and it still wouldn't start.

    Battery is charging now, as i ran the old thing flat trying to get it going...

    Sorry for being a useless c*nt, but Any ideas where to begin? want to get back out this weekend if poss.
  2. Tim

    Tim Member

    Stator Issue??
  3. roscoe1

    roscoe1 Member

    exactly what is wrong, does it still spark? someone on here will be able to help you if u tell them the symptoms.
  4. korned

    korned Member

    same similar issues, everything pointed to CDI
  5. josh

    josh Member

    didn't physically check the spark, but plugs were brand new. will have a proper look tonight and get more info and let you guys know.

    cheers
  6. jeton

    jeton Member

    does it fire at all or just turn over
  7. hbc rider

    hbc rider Member

    Check the stop switch connection. I had all sorts of problems due 2 a bad connection. So did the little miget and we had 2 tow his shit box in.
  8. josh

    josh Member

    sweet, so:
    yes, it was turning over, but just not firing.
    replaced the spark plugs, still not firing.
    pumped the primer, made sure it had fuel.. still wouldnt go. once or twice i got it to start, and would rev if i blipped the throttle, but then it would stall and die after.

    eventually the battery died. from turning it over trying to start it.

    Charged the batt overnight.
    checked to see if plugs were sparking - they were.
    checked to see if i had compression - was 155psi both cylinders.

    put it all back together and got it going almost straight away.. turned it off, feeling satisfied. tried again and the f*cker wouldnt go... :evil:


    Reckon i have some crap in the carb maybe?
    what are your thoughts?

    cheers 8)
  9. waxhead

    waxhead Member

    sounds like a cdi or a weak exciter coil
    when the exciter coil plays up the ski will run for about 8 minutes then start to play up
    then slowly they get worse and worse until you get to where they will spark but not enough to start the ski

    check the resitance on it
  10. korned

    korned Member

    mine had the exact same symptoms replaced CDI, no change, was looking next at going through the coils...

    By chance I ripped into the carby... found a hair ball in the carby which was clogging and causing all sorts of headaches.. put her all back together and sweet as.
  11. tofa

    tofa Well-Known Member

    Check spark
    Check conection of plug caps to plug leads
    Check plug caps
    Clean carbs
    Check all gaskets and fuel pump parts in carb
    Clean out gas tank and fuel lines
    Change fuel filter
    Check water trap isnt full of water[ leave the bottom of the trap open enuff that water drips out all the time]

    If you are not conferdent to do this work find someone that is to help as the carb must go back together the same as it came apart!!!!

    If this dosnt help then we will start on the electrics
    If you ride alot and your doing alot of subs or just falling off alot and taking on water into the engine bay all this stuff needs to be check on a regular basess.
  12. Aquanob

    Aquanob Active Member

    Tofa is right, maintenance is the key, i pull my engine out after every ride and replace the engine mounts just cause i want to, lol.
  13. tofa

    tofa Well-Known Member

    No norm its because you go bigger than big lol
  14. josh

    josh Member

    Cheers Tofa - awesome starting point. will get cracking tonight so i can hopefully be out on it this weeeknd.
  15. josh

    josh Member

    that's what yr mum said...


    oh, sorry. work is slow today