Page 1 of 2
Spark Plugs
Posted: Fri Jan 23, 2009 5:10 pm
Author: bigmac103
I've recently switched from NGK to Denso IW24 plugs. Once she is running I can definitely state that she is much smoother at low rpm, in other words the lumpiness has gone. The trouble is starting, doesn't start on first go now and mostly the no. 2 gets wet and I have to take it out and clean it. Has anyone else had this problem or could it be something else???
As always any input appreciated.
B
Posted: Fri Jan 23, 2009 5:14 pm
Author: tlc
Have you hot the number right ?
I thought they were W24 ESU
Posted: Fri Jan 23, 2009 5:17 pm
Author: bigmac103
Have I put the wrong plugs in?
Posted: Fri Jan 23, 2009 5:37 pm
Author: london calling
IW are the iridium type plugs.
Posted: Fri Jan 23, 2009 5:46 pm
Author: bigmac103
Yes they are iridium, and according to the cross reference chart they are compatible, but are they ok for the Z900 engine?
Posted: Fri Jan 23, 2009 6:33 pm
Author: london calling
They should be fine bigmac.
You might want to double check your carbs and maybe ignition coils/leads.
Maybe swap your plugs about to isolate the problem cylinder.
Posted: Fri Jan 23, 2009 6:49 pm
Author: Pigford
I run them Denso Iridium plug in me Black Zed...
I use the '27' grade (tad cooler running), and they are OK
Posted: Fri Jan 23, 2009 6:50 pm
Author: bigmac103
That's reassuring about the plugs thanks LC. The no. 2 plug fouled up when I first got the bike a couple of times and since I rebuilt the top end (Monday) it's happened twice, so maybe I ought to look at the carbs. Not a scooby doo where to start with the carbs mind you, but I'll learn.
Posted: Fri Jan 23, 2009 6:55 pm
Author: tlc
You`re a bit of a fiddler aren`t you ?
I did my carbs and had a misfire on No.2 afterwards.
Turned out that the main jet fell out in that carb
I`d have a look inside the float bowls and the slides, a complete strip really, but make sure you have the means to balance them after !
Posted: Fri Jan 23, 2009 6:57 pm
Author: london calling
You might want to get some Dyna/hi-output coils if you need to replace/up-grade your ignition.
Also check that you're getting a good reliable 12v feed to your coils.
www.denso-europe.com
Posted: Fri Jan 23, 2009 7:11 pm
Author: chrisu
Posted: Fri Jan 23, 2009 7:19 pm
Author: bigmac103
Guilty as charged TLC
and thanks for those links guyz extremely useful another direction for me to fiddle in
Posted: Fri Jan 23, 2009 7:34 pm
Author: london calling
The bike shop I use has got an electronic carb balancer which also has other usefull functions and is really accurate.
I'll get the make/model so you can look for mechanics/workshops for something similair where you are.
Posted: Fri Jan 23, 2009 7:49 pm
Author: bigmac103
Thanks LC.
Posted: Fri Jan 23, 2009 7:52 pm
Author: london calling
No worries Bigmac,just send me some Spanish sunshine