ZZR 600 E3 losing 2 cylinders and a third of the rev range

Well the weather has gone nice again, and the bike has decided to
start playing up.

Last night when leavin work I noticed the biek would only rev upto
10k, then lurch around and
then rev through to 12.5k.

A few miles further down the road the bike started lurching at 8k as
well as at 10k and still only
rev upto 12.5k. About 2 miles further the bike was running on 2
cylinders for a bit and then died.

I tried restarting it, then with the choke and you could smell the
fuel coming through, then kicked the sidestand down and up to see if
it was the switch and with no choke it started again on 2
cylinders with the rev counter floating up and down the scale then
about a minute later it was
running on all 4 again.

The only thing that has changed is that I have replaced the chain and
sprockets, and noticing
that the sidestand switch was covered in chain grease gave it a clean.
Initially the bike wouldnt
rev cleanly below about 5k but this went away after a day so I
thought it could have been
because the bike was left standing for a while.

Any thoughts as to where the issue could lie, I was going to bypass
the sidestand switch and check the fuel tank breather, does this sound
electrical or fuel?

I would have thought that the only thing to cause the bike to drop a
pair of cylinders would be
losing a coil, dont know why it would then die though.

Any help appreciated.

Cheers

"The Older Gentleman" <chateau.murrayTAKETHISOUT@dsl.pipex.com> wrote in
message
news:1i2h8cj.6ajfd36aevziN%chateau.murrayTAKETHISO UT@dsl.pipex.com...
> Miles Reading <big_sideburns@hotmail.com> wrote:
>
>> Any help appreciated.
>
> If it was OK until you cleaned the sidestand switch, this is where I'd
> be looking first.
>
> And yes, bypassing it is easy and a very good idea.
>
> It *could* be a coil gone pop. When that happened to me on a Kawasaki
> GT750, I actually thought it was a fuel problem because of the farting
> and banging as it slowly died.

I do believe you've given me hope that my VN will once again rise from the
depths.

I considered a duff coil, but not *seriously* iykwim and concentrated on the
carbs, but I'll buy two new coils and have done. The spitting, farting and
banging drove me to distraction.

Cheers TOG.

--
Beav

VN 750
Zed 1000
OMF# 19

	#1
Miles Reading	ZZR 600 E3 losing 2 cylinders and a third of the rev range Well the weather has gone nice again, and the bike has decided to start playing up. Last night when leavin work I noticed the biek would only rev upto 10k, then lurch around and then rev through to 12.5k. A few miles further down the road the bike started lurching at 8k as well as at 10k and still only rev upto 12.5k. About 2 miles further the bike was running on 2 cylinders for a bit and then died. I tried restarting it, then with the choke and you could smell the fuel coming through, then kicked the sidestand down and up to see if it was the switch and with no choke it started again on 2 cylinders with the rev counter floating up and down the scale then about a minute later it was running on all 4 again. The only thing that has changed is that I have replaced the chain and sprockets, and noticing that the sidestand switch was covered in chain grease gave it a clean. Initially the bike wouldnt rev cleanly below about 5k but this went away after a day so I thought it could have been because the bike was left standing for a while. Any thoughts as to where the issue could lie, I was going to bypass the sidestand switch and check the fuel tank breather, does this sound electrical or fuel? I would have thought that the only thing to cause the bike to drop a pair of cylinders would be losing a coil, dont know why it would then die though. Any help appreciated. Cheers

	#2
Beav	Re: ZZR 600 E3 losing 2 cylinders and a third of the rev range "The Older Gentleman" <chateau.murrayTAKETHISOUT@dsl.pipex.com> wrote in message news:1i2h8cj.6ajfd36aevziN%chateau.murrayTAKETHISO UT@dsl.pipex.com... > Miles Reading <big_sideburns@hotmail.com> wrote: > >> Any help appreciated. > > If it was OK until you cleaned the sidestand switch, this is where I'd > be looking first. > > And yes, bypassing it is easy and a very good idea. > > It could be a coil gone pop. When that happened to me on a Kawasaki > GT750, I actually thought it was a fuel problem because of the farting > and banging as it slowly died. I do believe you've given me hope that my VN will once again rise from the depths. I considered a duff coil, but not seriously iykwim and concentrated on the carbs, but I'll buy two new coils and have done. The spitting, farting and banging drove me to distraction. Cheers TOG. -- Beav VN 750 Zed 1000 OMF# 19