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PostPosted: 29 Apr 2012 18:15 
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Joined: 07 May 2009 11:53
Posts: 620
Current ride: BMW F900 XR
Location: Leeds
This week I'd had enough, enough of waiting for the Uly to start misfiring, running on one cylinder and eventually cutting out in the pouring rain. Usually half way down the motorway or mid-corner or mid-overtake.

I have tried numerous things in the past, checking and adjusting the routing of the plug leads, changing the leads when they show signs of rubbing, using Magnecor leads, applying damp start, waxoil to the inside of the rubber boots. All having little effect over time. So bad that this week the bike was already misfiring and cutting out when new leads were only fitted 3 weeks ago. Checked the front lead and was already showing signs of rubbing. :headbang:

:idea: My fix.
Take 2 lengths of 12.7mm/1/2 inch heater hose, about 2 inches shorter than the length of the spark lead without the rubber boots fitted.
Thread the leads through the heater hose and then refit the rubber boots using some silicon sealant.
Refit the leads to the sparkplugs and coil.

Now the plug leads cannot rub directly against the throttle cables, engine, mountings or frame.

Went for a 50 mile ride straight after to test. Anyone in the midlands/north of England who has stepped outside today will know how bad the rain is/was.
For the first 30 mins I rode with the same expectations as normal, waiting for a change in engine note, a splutter, a misfire and the dreaded cutting out.
On the motorway the truck wash occasionally caused a cough but nothing more. On the B roads round Squires, the roads were totally awash, deep puddles, deep enough to push my feet of the foot pegs but nothing went wrong. The bike kept running, off the throttle it returned to a smooth idle, at the lights/junctions it would sit there happily ticking over. :D

Finished the ride with a huge smile. Just able to concentrate on the riding, being smooth and setting up for corners and other hazards correctly and generally actually having fun. :dance:

Touch wood, this mod is working.

Just need some new waterproof boots and gloves.

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PostPosted: 29 Apr 2012 18:32 
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proff. patpending
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Current ride: Victoria Sponge
Location: Bristol - Gateway to all things good
Nice...

Post some piccies...

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PostPosted: 29 Apr 2012 20:41 
8-) :yup:


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PostPosted: 29 Apr 2012 20:48 
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Current ride: 1991 RS1200 westwind
Another solution to the plug leads rubbing through would possibly be to cover them in the spiral wrap used on electrical wiring for protection ;)

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PostPosted: 30 Apr 2012 14:15 
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Current ride: XB12XT
Location: Kildare, Ireland.
Sorry for the silly question but what is heater hose ???

Eric.

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PostPosted: 30 Apr 2012 15:03 
This sort of thing, I'd say ..


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PostPosted: 30 Apr 2012 15:27 
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kevmean wrote:
Another solution to the plug leads rubbing through would possibly be to cover them in the spiral wrap used on electrical wiring for protection ;)
I'd go for the rubberised Fibreglass covers. About two pahnds-fifty a metre

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PostPosted: 01 May 2012 15:14 
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Current ride: BMW F900 XR
Location: Leeds
Digger wrote:
This sort of thing, I'd say ..

Yep, that's the sort of thing. Just had to buy a metre length at Halfords for £2.50

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_categoryId_165746_productId_184559_langId_-1

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PostPosted: 01 May 2016 10:01 
Hello peeps,

I know this post is 4 years old, but does anyone know what causes these problems in the rain? is it the fact the leads or lead rubs on things or is it the water getting on to the leads coil pack etc that causes the missfire/cutting out?

Can anyone shed more light on this as I need to sort my bike to stop it doing this before I ride to France :shock: ......

Thanks


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PostPosted: 01 May 2016 13:26 
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proff. patpending
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Current ride: Victoria Sponge
Location: Bristol - Gateway to all things good
Normally front HT lead wears through on the tickover adjust, but all the rubber parts deteriorate so replacing them with new (with some silicon grease if you are feeling over cautious) is not a bad idea...

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PostPosted: 01 May 2016 14:16 
pash wrote:
Normally front HT lead wears through on the tickover adjust, but all the rubber parts deteriorate so replacing them with new (with some silicon grease if you are feeling over cautious) is not a bad idea...



Cheers for the reply pash, I did start doing the job and now need a new plug and lead because of rot and rubbing, will replace both of course, just need to find some now :rotfl: in the uk :rotfl: :rotfl:


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PostPosted: 01 May 2016 14:49 
and where do you put the silicon grease? just inside the connections to go on the plugs and the coil :mrgreen:


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PostPosted: 01 May 2016 17:34 
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Quote:
just need to find some now :rotfl: in the uk


Got loads in stock......but not at my Buxton branch :)

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PostPosted: 01 May 2016 17:59 
Maz wrote:
Quote:
just need to find some now :rotfl: in the uk


Got loads in stock......but not at my Buxton branch :)




:rotfl: Buxton branch :headbang: :rotfl: spent my hard earnt at sparkplugs ltd via the link you gave me :shock: :oooops: :cry: :cry: but I hope there good ones at that price :yup:


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PostPosted: 01 May 2016 19:42 
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Link I gave you ?.....I dont think so.....anything other than standard plugs are a complete waste of dosh IMO :idea:

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