That experience my 2001 Fazer to be from HELL?????? Or is there someone that also have had the following problems, and in that case...WHAT to do whit it?????????? My bike is NOT idling, and when that happens the fuel goes in my engine oil,and to overflow.....
I am actually struggling VERY HARD to get this fixed, but nothing have yet helped... So PLEASE guys. HEEEEEEEELLLLLLLPPPPPPPPP :'(
Have you done a compression test yet? Sounds like it could be a shot piston ring (or more than one) to me.
No i ahve not done yet.... But when i have cleaning carbs, and installed New sparks, it runs fine for 3 -4 hours???
One of the carb floats leaking?
(10-07-14, 01:46 PM)Jules-C link Wrote: One of the carb floats leaking? +1 on the carb float. I think if it were a piston ring, it would do it permanently?
Is it burning any oil?
Stuttering at low revs/down on power?
Puddle of fuel under bike shortly after a ride?
Stop polishing it and ride the bloody thing!!
![[Image: 850481.png]](http://badges.fuelly.com/images/sig-uk/850481.png)
Yeah of it was a ring it would be constant (I thought it was constant until the post about cleaning the carbs temporarily fixing it).
Crud in the fuel tank/lines could also explain it running like a bag of spanners, but it doesn't explain the fuel in the oil obviously.
10-07-14, 02:36 PM
(This post was last modified: 10-07-14, 02:41 PM by Frosties.)
(10-07-14, 02:15 PM)stevierst link Wrote: [quote author=Jules-C link=topic=13965.msg157966#msg157966 date=1404996399]
One of the carb floats leaking? +1 on the carb float. I think if it were a piston ring, it would do it permanently?
Is it burning any oil?
Stuttering at low revs/down on power?
Puddle of fuel under bike shortly after a ride?
[/quote]
Wouldn't it be a case of gummed up carbs causing the float to stick open.
DOH! Just realised I've said basically the same thing :lol
Those are my principles...if you don't like them I have others.
(10-07-14, 02:36 PM)Frosties link Wrote: Wouldn't it be a case of gummed up carbs causing the float to stick open. It could be something as simple as a small bit of crud sticking the float open.
Is it the same carb that's overflowing all the time? Or can't you tell?
Is the air filter in one piece? If that's dropping to bits, it 'could' have sucked bits into the carbs. Only ever seen it once, and it caused a few problems.
Stop polishing it and ride the bloody thing!!
Hi there... I am really impressed by all you guys that take Your time to help me out here... Its right, the fuelsump ends up under the bike, allways...It runs not on idle, and yes...a lot of gas, in oil?????
Check your float heights.
If they are roughly correct look at fitting new float needles in all 4 carbs.
(10-07-14, 02:43 PM)stevierst link Wrote: Is it the same carb that's overflowing all the time? Or can't you tell?
On the center stand, Put clear plastic pipe onto the drain plugs of the carbs, tape them up so they run up the side of the carbs. Slacken off the drain screws and compare the levels. turn ignition on and you should hear the fuel pump click a couple of times as the carbs refill, check levels again
As long as you have not got any leaks, you can start the engine and see what happens aswell
Sounds like a needle jet leaking.
It either has dirt on the needle valve set or the needle jet housing O ring has perished and allow fuel to leak past and overfill the float bowl and flowing into the cylinder. Since it is much thinner than oil it flows past the rings into the sump. Was a bit of a problem in the earlier 1998 Fazer, but also effects any that are idle for long periods. It can also be caused by someone removing the needle jet housing and damaging the O ring.
The plastic pipe from the drain hole may or may not show it up depending on how fast it is happening.
I would suggest you buy a float valve kit and fit it. They are available from WeMoto for around £16 each.
http://www.wemoto.com/bikes/yamaha/fzs_6...valve_kit/
10-07-14, 06:25 PM
(This post was last modified: 10-07-14, 06:26 PM by stevierst.)
I was going to suggest something similar to Ebme geeks suggestion, but this way sounds way better than my idea.
Stop polishing it and ride the bloody thing!!
Ok... I have now get confirmed that the gas that leaks, is coming from carb 1 and 2....... I have also dissambled the carburator rack... What can i do NeXT?
(10-07-14, 09:20 PM)Why link Wrote: Ok... I have now get confirmed that the gas that leaks, is coming from carb 1 and 2....... I have also dissambled the carburator rack... What can i do NeXT?
Buy another set of known working carbs..............from me! 
Visually compare them with your carbs....Fit them, drain your oil and replace with fresh including the filter.....replace your inline fuel filter....empty your fuel tank...check for debris or rust...replace with good fuel.......check your air filter isn't trashed or contaminated...replace it if required.
Then refurbish your old carbs in your own time. 8)
Easiest way to go fast........don't buy a blue bike
(10-07-14, 09:42 PM)noggythenog link Wrote: [quote author=Why link=topic=13965.msg158032#msg158032 date=1405023647]
Ok... I have now get confirmed that the gas that leaks, is coming from carb 1 and 2....... I have also dissambled the carburator rack... What can i do NeXT?
Buy another set of known working carbs..............from me!
Visually compare them with your carbs....Fit them, drain your oil and replace with fresh including the filter.....replace your inline fuel filter....empty your fuel tank...check for debris or rust...replace with good fuel.......check your air filter isn't trashed or contaminated...replace it if required.
Then refurbish your old carbs in your own time. 8)
[/quote]
:thumbup :thumbup :thumbup
(10-07-14, 09:46 AM)mickvp link Wrote: Have you done a compression test yet? Sounds like it could be a shot piston ring (or more than one) to me.
Spot on. Either rings have gone, or crack/hole in piston head..Fuel shouldnt be getting through to your oil to that extent. Ive bought yet another Fazer cheap which was suffering with similar problems. Engine out, head stripped, pistons checked and yes piston 3 was cracked on the head. Not very common but unfortunately it does happen.. Simple enough job to change the piston but I just changed all 4 with new rings.. Runs a dream now.. Just 1000 other jobs left to do on it...
It's not a speed limit it's a target
As already suggested I'd look at the fuel petcock and the carbs. This is a common problem on one of my bikes, a Kawasaki ZRX1200R, where the fuel petcock seals fail allowing the fuel to flow freely when the engine is off. The fuel fills the carbs and then finds its way into the cylinders and then not to the engine oil. A complete oil drain is needed together with fixing the fuel petcock and carbs. Oh and it's not a good idea to try to start the motor as I believe you can get something called hydraulic lock in the engine, which basically cracks the block!
(11-07-14, 08:36 AM)Ruby Racing link Wrote: Oh and it's not a good idea to try to start the motor as I believe you can get something called hydraulic lock in the engine, which basically cracks the block!
Hydrostatic lock, same as when idiots drive their cars through flooded roads. For a 600c inline 4 it probably won't take very much. Each cylinder is 150cc and at a compression ratio of 1:10 (guessing here?) that's only about 15cc liquid needed in a single cylinder to break a rod etc.
Eagles may soar, but weasels don't get sucked into jet engines...
(11-07-14, 09:06 AM)Buzz link Wrote: Hydrostatic lock,
Thanks for correcting me. :thumbup
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