Engine starts backwards!?!

Discussion in 'General Questions' started by commanderroach1999, Oct 9, 2016.

  1. When u roll the bike forwards the piston moves and no spark. <-With clutch disengaged->. When I roll it backwards, I get the piston moving 4 times as much and fast as when rolled forward. I still don't know what the problem is. I am getting fuel.

  2. jaguar

    jaguar Well-Known Member

    don't worry about the forward/backward difference.
    make sure the clutch fully engages and fully disengages.
    adjust the cable slack and the flower nut till the clutch works properly
    Steve Best likes this.
  3. And it will automatically fix it's self?
  4. Would it slip If the woodruff key moved around to buch?
  5. jaguar

    jaguar Well-Known Member

  6. I know that I was getting spark but very weak spark but still spark. And now I don't get spark when I roll the bike forwards or backwards. It feels like I am getting more compression and piston movment when I roll the bike backwards.
    Do u still think that this is a clutch problem, compression problem or a electrical problem? I am definitely getting gas.
  7. jaguar

    jaguar Well-Known Member

    Did you read the link I gave you?
  8. No not all of it yet I rwas the rest and then get back to u. Thx
  9. crassius

    crassius Well-Known Member

    no idea what those links are, as they don't show anything on my 'puter - had a backwards motor one time many years ago & if I recall correctly it was a bad CDI unit - it ran just fine backwards
  10. butre

    butre Well-Known Member

    do you have a spring tensioner? those cause more rolling resistance when rolling backwards if the alignment isn't 100% perfect.
  11. Yes it does but i don't think that's the problem, I bet it's the cdi.
  12. I fixed the compression problem. It was the woodruffkey behind the clutch case small bevel gear. Now it has compression but no spark.it now for sure has fuel and compression.
  13. marshall johnson

    marshall johnson New Member

    be certain the cdi is not grounding some where