Engine Trouble bike wont start

Discussion in '2-Stroke Engines' started by lewsidius, Nov 8, 2011.

  1. lewsidius

    lewsidius Member

    Hello
    I havnt been able to start my bike in a while
    I have tried alot of things
    adjusting the flower nut
    tuning the carb
    amongst other things
    today i installed a pull start
    just to get the ball rolling and make it easier to asses
    it makes a high pitch squeaky noise when ever i try to start it
    but the engine doesnt turn
    i took th engine apart and nothing is amuk

    i do believe i have a clutch problem but i dont know what the issue is

    also the camshaft (what the factory calls it anyway)
    is wobblely
    and the clutch haddle doesnt seem to have much tension

    im not sure where to go from here
     

  2. bideronit13

    bideronit13 Member

    Welcome
    Perhaps the pull start is not installed correctly. I say this because you came to this conclusion after you installed the pull start. Just to make sure after and if you uninstall the pull start try ridding starting it to see if you get the same result.
    Since you have not ridden it in a while when you parked it I assume nothing was wrong with it so you might not have anything wrong.
     
    Last edited: Nov 8, 2011
  3. lewsidius

    lewsidius Member

    hello
    and thanks for the reply
    and sorry just to confirm it didn't work before pull start installation either and thats why i had it parked for a while
    i couldn't figure out what was happening and i would pedal pedal and it would never turn
    and it makes a squeaky noise and wont turn
    it seemed like when i released the handle something was loose
    then i tightened the flower nut and i actually started for a few minutes (when i hit a high speed) and stalled when i lost momentum
    but i cant seem to get it goin now:74:http://www.motoredbikes.com/images/smilies/weapons/74.gif
     
  4. bideronit13

    bideronit13 Member

    All I can think of is to take apart the clutch assembly and give it an exam. It seems to me there's something holding back the motor.
    A combination of things could also be the answer. I'd place NGK b5hs in there also if not already that too.
    Take all the drive train apart too. Usually when someone does they find the problem.
    Keep us informed on it.
     
  5. bideronit13

    bideronit13 Member

    Check everything it could be a jammed chain link or something.
    If you get the drive train disconnected see if the motor turns. If it don't it might be seized.
    I had a seized motor before and I got it un-seized with WD40 and it ran like junk after that.
     
    Last edited: Nov 8, 2011
  6. bideronit13

    bideronit13 Member

    Oh one more thing if the bikes to greasy to work on take it to the car wash and power wash it.
    I have to do that sometimes to my MB.
     
  7. Big Red

    Big Red Active Member

    Starting problem

    As long as you have the pull start it easy to check if you're getting spark. If so, Next thing to check is gas, Is it getting any? You can check this real easy by just dropping a little gas down the carb and giving it a pull. If it pops then find out where your gas is getting constricted. As long as the clutch turns the motor over then it's not a clutch problem, as far as getting it running anyway. See if you can get it running, Then it's easier to find other problems you might have. If the clutch is slipping too much to get it started, try adjusting it in a few turns on the flower nut. If it still slips, check to make sure you don't have a blown oil seal on the clutch side. If so there will be a fair amount of oil inside the clutch housing. This is a DRY clutch and ANY oil on it is a bad thing. I got a BRAND NEW engine once with a bad seal.
    These engines are pretty basic and only a small handfull of things to go wrong. I'm sure once you find the problem it will be something simple. Also, Most people on this site recommend the B6HS but the B5 will work also.
    Big Red.
     
  8. lewsidius

    lewsidius Member

    very good tips bideronit13
    im gonna try it tomorrow!:)
    thanks alot
     
  9. motorpsycho

    motorpsycho Active Member

    I really think it's a clutch issue.
    first, he said that the clutch lever has very little tension (a sign of the clutch or cable being way out of adjustment).
    he is hearing a squeeking noise, a sign of the clutch actrually slipping.
    the engine won't turn over, another sign of the clutch slipping.
    he didn't mention of the rear wheel turns while trying to peddle start it or not.
    if the rear wheel keeps turning when the clutch is released, the clutch is slipping.
    I don't think it's an ignition or fuel problem at all.
    I'd place my money on a clutch issue.

    Powerwashing is a bad idea. this can cause water to get into the magneto which will give you no spark, which will only add to the problem.
    if it were a jammed chain, the rear wheel would be locked up all the time.
    keep it simple and don't dissassemble too muich at one time.
    I'm betting that the problem is right there in plain site...which again, probably has to do with the clutch slipping in my opinion.
     
    Last edited: Nov 9, 2011
  10. motorpsycho

    motorpsycho Active Member

    If it were a drivetrain (chain or sprockets) issue, the rear wheel woudl be locked up.

    I don't beleive this at all about the motor once being seized and then being able to get it freed up with wd 40.
    first off, wd-40 is not a penetrating/ lubricating oil.
    wd-40 is a water dispersant and is not a very good lube.
    if an engine is seized up, chances are that the rings have bonded themselves to the cylinder. i'm not saying that it's impossible to get a once seized engine running again, but wd-40 would not be the way to do it.
    wd-40 probably would not work for this....you would need a very good penetrating oil.
    If you did get the engine unsezied, of corse it would run terrible because it would not have much compression anymore.
     
  11. Big Red

    Big Red Active Member

    Clutch

    Yer right Moto, But ya notice I said " as long as the clutch turns the motor over". Of course if it don't then it's a clutch issue. And yeah, power washing is the worst idea I've ever heard. But this is comming from the guy that say's the B6HS is a useless spark plug. If I EVER let my motors get so dirty they needed power washing someone should shoot me.
    Big Red.
     
  12. motorpsycho

    motorpsycho Active Member

    correct you are!
    If ANYTHING with an engine that i own ever gets so dirty that it needs to be powerwashed, then someone needs to shoot me!
     
  13. Big Red

    Big Red Active Member

    Don't shoot me!!!

    Yeah Moto, I've been working late in my shop every night this week so my garage is tore up from the floor up, (Perhaps I should be shot for that.) BUT MY BIKES ARE CLEAN. If nothin else goes wrong, (yeah right,) I'll be getting that in order tomorrow.
    Big Red.
     
  14. lewsidius

    lewsidius Member

    thanks for all the sugestions

    im goin to get on these things
    and ill post soon on my progress
    im preety sure its my clutch and mabey a little dirt
    im gonna give it a good wipe down
    does gas mixtures go bad if not used???
     
  15. olow

    olow Member

    really want to no if it runs ive had gas sit all winter and still good have u checked 4 spark all it takes is gas and spark 4 any motor 2 start oh compresstion 2:idea::sweatdrop:
     
  16. cloud_2901

    cloud_2901 Member

    Yes, petrol will lose RON rating over time, worse the oil will seperate from the petrol and then block up your carby, because oil is heavier than water, so it sinks to the bottom of the tank and is pulled through the line first.

    That'd take a while though. I've run these 66ccs after been sitting around for 6 months, same fuel, started first try, ran fine.

    You just wouldn't want to keep the same petrol for a month in a proper two stroke, these little china diners arent really fussed though.
     
  17. Al.Fisherman

    Al.Fisherman Active Member

  18. Big Red

    Big Red Active Member

    Starting

    Thanks Al. It's a great "quick check" list for anyone with a start problem. I'm gonna copy it and hang it in my shop.
    Big Red. :likelots:
     
  19. motorpsycho

    motorpsycho Active Member

    true, you need fuel, compression, air and spark...but you also need a way to get the engine to turn over before it will run.
    if the clutch is slipping bad enough, the engine will never turn over at all.
    if the engine can't turn over, then it can't make spark.
    so getting the engine to turn over is the first priority here.
    notice i said turn over......which means getting the piston to go up & down.
     
  20. olow

    olow Member

    :poop::sweatdrop::ack2: guess ur trying 2 say is your hearing is bad oh and ur eyes if u check to see if u have spark then u would know if the motor turns over or not. :idea::detective::bowdown::jester:
     
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