FZS 600 01 flat spot/sluttering in heavy rain - Fixed.

[Beehive Bedlam]

Today was the first time I felt the need to rainsuit up in what I would describe as heavy rain with lots of road spray my bike started spluttering which suggest water is getting somewhere it should not is this a known issue?

Also FYI when I got home and waterproofed the HT leads with WD40 I discovered spark plug cap 4 to be broken off.

https://i.imgur.com/KM4BGwL.jpg

https://i.imgur.com/DedhALu.jpg

I believe it still connects to the plug but it isn't as secure like it should be.

Also I removed spark plug 4 how does it look time to replace?

https://i.imgur.com/uDLZbkY.jpg

Didn't remove the the ones further in as they look a PITA and will require me to remove the tank.

[andys675]

I think you've found your problem, not common on fazer 600's

replace the cap, scrub the plug with a wire brush
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Some people feel the rain, others just get wet.

[Beehive Bedlam]

I have pulled the broken rubber boot down slightly and gave it a squirt of WD40 it is running much better.

Can the rubber boots what go over the end of the plug cap be bought seprately?

[weasley]

No, it is part of the spark plug cap; they unscrew from the HT lead, with the replacement screwing back on. I replaced one on my Thundercat a while back. Check what resistance it is though... I recall mine was a 10k ohm cap, which is less common than 5k ohm ones. And mine was a very specific design that was only available either OEM or, as I found, second-hand from a breaker.
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Yamaha XJ600 | Yamaha YZF600R Thundercat | KTM 990 SMT | BMW F900XR TE

[Beehive Bedlam]

[Keir]

you need ones of these CLICK HERE

At £2.50 each you might as well swap all 4.
They are straight instead of angled like the OE ones but fit and work just fine. You simply unscrew the old from the HT lead and screw on the new one.
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Current : '08 Yamaha FZ1s
Previous: '99 Honda CBR 600FX, 03 ZX636 B1H, 99 Fazer 600 (red), 02 GSX-R 600 K2, 00 SV650s (red), 2008 ZX10R, 97 Bandit 1200N, 04 ZX6RR K1H, 04 GSX-R 1000, 98 Fazer 600 (gold), 05 Madness 110 Pit bike, 04 CR125R, 00 SV650s (black), 06 KTM 625 SMC, 99 SRAD 600 track bike, 03 SV650, 98 Bandit 1200N, Bandit 600SY, 03 GSX-R 600 K3, 01 GSX-R 600, 01 Fazer 600 (black), VFR 400 NC30 x3, 78 Honda Dream, 00 Speedfight 50