Posts
8
Joined
3/1/2018
Location
GB
Hi there this my first post.
I'm new to the forum.
Noticed my yzf getting harder to start last couple of sessions and after washing it Sunday now can't get it started.
Would like to rule out the valve clearances as being the problem, dose anyone know the specs?
I don't have the 2017 owners manual, I have downloaded a 2016 manual but dose anyone know if the clearance specs are the same?
Any help or advise would be much appreciated, as I've searched the internet with no luck.
All the best, joff
I'm new to the forum.
Noticed my yzf getting harder to start last couple of sessions and after washing it Sunday now can't get it started.
Would like to rule out the valve clearances as being the problem, dose anyone know the specs?
I don't have the 2017 owners manual, I have downloaded a 2016 manual but dose anyone know if the clearance specs are the same?
Any help or advise would be much appreciated, as I've searched the internet with no luck.
All the best, joff
I've checked sparkplug getting a nice blue spark each kick.
I've emptied the fule and replaced with fresh.
I also suspect it's an electrical issue but just want to check and rule out the valve clearance.
I have dried and cleaned all the connections coming off the harness with electrical contact cleaner and a hairdryer and re assembled but still no luck.
The exhaust bung was in when I washed it.
Just occasionally backfires when attempting to start it at moment, I give up after 20 or so kicks it use to start up within a couple attempts.
ATB, joff
The Shop
ATB joff
I can get on and check them now.
ATB joff
Exhaust clearance is within spec
Inlet clearance is very tight, not even remotely close dose anyone know what would cause this?
No wonder I can't get it started.
I've only owned the bike a couple of months and done approx 8 hours on it, the bike was pre owned but in good condition and almost original so don't think it's racked up that many hours.
Something dosent seen quite right here?
Thank and all the best
Joff
This is normally caused by some one bouncing the rpms off the rev limiter for periods of time. It is very hard on the valves. It is also a sign of normal wear over a long period of time.
I would also suggest looking at the cam chain for wear.
Paw Paw
I haven't ridden it that hard, hit the limiter few times but very short periods. Might of been raced hard from new?
I want to get it checked out properly now due to the fact the clearance is so far out of spec has me slightly concerned.
While it's there I'll get him to check the piston,rings,camchain,valves etc etc
Thanks for your input everyone.
Atb- joff
Every time you bounce off the rev limiter you shorten the engine life. I read some where, but don't remember were but it does seem reasonable, that every time the revs hit the rev limiter it shortens the engine life by about an hour.
So in a 15 minute MX race with the engine being bounced off the rev limiter many times per lap, the engine life will be reduced greatly. Do that over a season and you can see that the engine life becomes very short.
Paw Paw
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