kz900 carb settings

[knut]

hi guys,i,m new here and looking for the standard air mixture and other settings for a standard kz900,as i think it,s getting too much petrol on #1 .
thers plenty of spark but #1 exhaust is not getting anyway as hot as the others.
there seemed a lot petrol in mix that it spat out when i removed the plug while checking the spark,

any help much appreciated
regards knut.

[Pigford]

Sounds more like a dodgy plug? If its an NGK, they seem to be iffy?
Swap 1 & 4, see if problem moves? If not, swap leads, they are both the same coil, so thats OK!
If its still No 1, carb could be flooding? Air screw out 1 1/4 - 1 1/2 turns.

[knut]

Sounds more like a dodgy plug? If its an NGK, they seem to be iffy?
Swap 1 & 4, see if problem moves? If not, swap leads, they are both the same coil, so thats OK!
If its still No 1, carb could be flooding? Air screw out 1 1/4 - 1 1/2 turns.

thanks pigford ,
i,ll try swapping them around 2moro,leave ye know whats happens ,cheers

[Phil50]

Hi
Having suffered a similar problem on all 4 pots. I tried other plugs. I did have a faulty coil lead and also a sticking float valve. check compression also. Should be 140-145psi on all 4
good luck

[z1bnackerkwacker]

Only ?33 for 4 kits to rebuild from Z1 enterprises @ (todays rate), if you do it yourself, piece of piss, that's where I got mine, runs great now.......
Air screws: I have a book that says as much as 2 and a half turns out as 1-1 and a half is too rich, Something you will have to try for yourself, no 2 air mixture screw seats are gonna be identical.....

p.s If you've got genuine Kz carbs (3 screw) the balance screws will be under carb tops (If you don't already know) , not as z1...

[Pigford]

Just to elaborate:

z1bnackerkwacker Posted: Tue Jul 03, 2007 2:50 pm Post subject:

--------------------------------------------------------------------------------

Only ?33 for 4 kits to rebuild from Z1 enterprises @ (todays rate), if you do it yourself, piece of piss, that's where I got mine, runs great now.......
Air screws: I have a book that says as much as 2 and a half turns out as 1-1 and a half is too lean, Something you will have to try for yourself, no 2 idle seats are gonna be identical.....

p.s If you've got genuine Kz carbs (3 screw) the balance screws will be under carb tops (If you don't already know) , not as z1...

Carbs with screw under carb throat, near cylinder, is a FUEL enrichening adjuster. This one will let extra fuel in the more it is opened (anti-clockwise = richer)
Carbs with AIR screw, on inlet side, lets more air in, weakening mixture (anti-clockwise = weaker).
Therefore, if its air jet screw, be aware that further out is WEAKER.

[z1bnackerkwacker]

Correct Mr Pigford, I was referring to the latter not the former.Should have been too rich (not lean), on my carbs', not sure what models other carbs you mention were fitted to....

[knut]

Hi mr pigford,
been away on hols last week ,haven,t got near the bike lately,but before i went on hols i swapped round leads and still the same problem,think i,ll take the carbs out and service them altogether,as z1bnackerkwacker said,
regards knut