Spluttering and only firing on one cylinder (front)

[Storm Trooper]

Damn, after a great 2 days and fantastic weather, riding on the west coast of Scotland, heading home today in torrential rain, bike starts to splutter and lack power. Then its OK, then back to spluttering with no power. It seems intermittently to be dropping the rear cylinder, as the exhaust pipework is cold. Then if left sat for a while and start it, it is ok. Anybody got any ideas? I was thinking possible coil failing or electrical short?

I think it is water related, as it was perfect until the ride in the torrential rain today, like serious smount if water, and once recovered back home and dried out, fired up on both.

Cheers

[MacV2]

Could be the rear coil shorting out due to the wet...Lashings of WD40 (other water dispersant sprays are available..) Carry a small can with you & if it happens again give it a spray...It might just be the plug cap...IIRC Bazza had an issue like that last year in heavy rain.

Or change the coil pack...Just so happens I have a set or two in stock !

[Wicky]

Usually it's the front plug / plug cap getting drowned in water when the recess in the front cam head drain hole gets blocked - remedy is to unblock drain hole. Also check that the tank breather hose exiting out near the belly pan isn't water logged - Usual remedy is to cut it a little shorter and at an angle.

Rear is quite well protected from elements so you might then want to get a multimeter and check your ignition / sparky gubbins is up to spec.

[lloydie]

Remove that breather pipe

[Storm Trooper]

Now that it has dried out it is starting and running fine. Took out for a few miles and rides perfect. Simulated the symptom's if yesterday by pulling the rear coil connection, so its def, coil when wet, as plug hole dry and plug is only a few months old.

CBR coils ordered, but anything else to be checked with coil?

[Jazzscot]

Do the stick coil mod

you wont regret it

[Storm Trooper]

Do the stick coil mod

you wont regret it

Hopefully, fingers crossed.

Just seems to not like the Scottish Torrents of Rain!!

Now looking for an old set of coils or even just the HT plug Cap if anybody has any old ones lying about. Wanting to try some test modifications on these.

[Storm Trooper]

Could be the rear coil shorting out due to the wet...Lashings of WD40 (other water dispersant sprays are available..) Carry a small can with you & if it happens again give it a spray...It might just be the plug cap...IIRC Bazza had an issue like that last year in heavy rain.

Or change the coil pack...Just so happens I have a set or two in stock !

U got spare coil packs? MacV2?

[MacV2]

Could be the rear coil shorting out due to the wet...Lashings of WD40 (other water dispersant sprays are available..) Carry a small can with you & if it happens again give it a spray...It might just be the plug cap...IIRC Bazza had an issue like that last year in heavy rain.

Or change the coil pack...Just so happens I have a set or two in stock !

U got spare coil packs? MacV2?

Having said that I will have to go & check...I'll get back to you on that one...

[VTRDark]

Did you check the front drain hole.

http://www.vtr1000.org/phpBB3/viewtopic ... drain+hole

Location pics
http://www.vtr1000.org/phpBB3/viewtopic ... 60#p352943

(:-})

[MacV2]

Could be the rear coil shorting out due to the wet...Lashings of WD40 (other water dispersant sprays are available..) Carry a small can with you & if it happens again give it a spray...It might just be the plug cap...IIRC Bazza had an issue like that last year in heavy rain.

Or change the coil pack...Just so happens I have a set or two in stock !

U got spare coil packs? MacV2?

Having said that I will have to go & check...I'll get back to you on that one...

Right I've had a rake in the MacCave...sorry no can do...I did have some but on checking I sold them...well TBH I have had & sold 3 sets in the last year... Soz for getting your hopes up...

[Bananaman]

I've got a set of coils knocking around if there still needed

[Storm Trooper]

I've got a set of coils knocking around if there still needed

I am waiting on a set arriving from someone, but as of yet they haven't appeared. If they don't then I wouldn't mind giving you a shout for them.

Cheers

Nigel

[Bananaman]

No worries mate, just let me know

[tony.mon]

Mine does this, in the wet, front cylinder cuts out. I have stick coils fitted, so it's not a perfect solution....
I even fabbed a waterproof cover for it out of a pushbike inner tube, still can't seem to seal it effectively. Drain hole was clear, I find that the little pipe on a can of WD40 pokes up it beautifully, and then you can squirt it clear,