Why is my bike so easy to kick over?



6 replies to this topic
  • steve1169

Posted July 25, 2014 - 05:15 AM

#1

I took it in for a valve check/adjustment and a leak down test.
The guy took the engine right out and tore it down checking everything out because I just bought it.
Leak down test was perfect.
Since I got it back it kicks over VERY easily. Unless I get it to TDC then kick it it's super easy to kick over now.
Still starts no problem, still has tons of power, just kicking over is like a knife through butter.
It's a 04 wr450 by the way.
Any ideas would be appreciated

  • Still Bill

Posted July 25, 2014 - 05:33 AM

#2

Maybe because it is running good?  Try running the gas dry and see if it is still the same. 

 

I thought my old KTM 200 felt soft one day.  So, I slowly kicked it - very slowly - it seemed like compression was zero - and then suddenly it started!

 

Reminds me of an old Model A trick - shut off engine with throttle open.  Turn on ignition after engine stops.  Move spark advance lever - engine starts without touching starter!

 

 

Or, maybe you only "think" it is running great.  Maybe it has low compression and could be much faster?



  • ickfinger

Posted July 25, 2014 - 06:04 AM

#3

Maybe, just maybe, the mechanic has everything adjusted to spec and it is starting the way it's supposed to. Could have been out of spec before.

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  • LoonRider

Posted July 25, 2014 - 06:22 AM

#4

Don't know if the bike has it, but an auto decomp in the cams. I thought the same thing with my bike.

  • DR.billZ

Posted July 25, 2014 - 06:34 AM

#5

Lemme get this straight, you have a Yamaha 4 stroke and it starts easy? I'd say a prayer and thank the man!

  • Fattonz

Posted July 25, 2014 - 10:22 AM

#6

Don't know if the bike has it, but an auto decomp in the cams. I thought the same thing with my bike.


This was my thought.....maybe decompress was not working before, but now is.

Also, as stated, everything is in spec now? But I would expect a bike to kick over a bit harder when everything in is spec vs not....but I'm not a 4T guy.....

  • ickfinger

Posted July 25, 2014 - 10:54 AM

#7

This was my thought.....maybe decompress was not working before, but now is.

Also, as stated, everything is in spec now? But I would expect a bike to kick over a bit harder when everything in is spec vs not....but I'm not a 4T guy.....

If the valves were tight they were holding in compression quicker/longer




 
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