spark plug cap.
Author
Discussion

d3ano

Original Poster:

7,413 posts

269 months

Wednesday 30th June 2004
quotequote all
hi i need some advice on the above.
With my bike, as soon as it rain, it cuts out because rain get pass the cap and onto the plug (i assume, i have no real knowledge of this)
so i have to take the cap out give it a shake and then i am able to ride about 1/2 a mile before more water gets in there and it cuts out again.
I noticed that on the top of the cap there are small holes all the way round and this is where there rain is probably getting in.
If i covered the whole cap with greese or vasaline (sp?) would this have any affect on the plug?
I am assuming that air needs to get in there or fumes need to get out.

Any help is much appreciated.

Thanks

D3

cazzo

15,192 posts

283 months

Wednesday 30th June 2004
quotequote all
Get a new cap - only about 2 or 3 quid

Seriously it could be breaking down, my kids have a Quad which was playing up and obviously electrical I suspected coil, plug etc turned out the plug cap was knacked - changed it cured the problem and the 'better' quality (£3) caps have a rubber seal to keep the water out.

Graham Lunn

49 posts

255 months

Wednesday 30th June 2004
quotequote all
Change the cap for sure, try and get a Champion spark plug cap, metal caps tend to short out

d3ano

Original Poster:

7,413 posts

269 months

Wednesday 30th June 2004
quotequote all
stupid question, but where can i get a cap from?

Pigeon

18,535 posts

262 months

Wednesday 30th June 2004
quotequote all
Car spares place
Half-rods, unless they've got crapper than I'd have believed possible
Scrappie
Abandoned/dumped car
Mate with shed full of dead bikes
...the list goes on...

cazzo

15,192 posts

283 months

Wednesday 30th June 2004
quotequote all
d3ano said:
stupid question, but where can i get a cap from?



Motorbike dealer/mechanic, car spares shop, nick one off your car.. but get the 'premium' (Champion or similar) one for the extra quid or so, coz the cheap ones are cr@p.

edited to add; but don't pull the cap off the plug while the engine's running

>> Edited by cazzo on Wednesday 30th June 20:05

bennyboysvuk

3,494 posts

264 months

Thursday 1st July 2004
quotequote all
Mate, this happens with SV650s too. Standing water gets thrown up by the front wheel straight at the front cylinder. After a few miles, it becomes too much and the front cylinder spark plug gives up the ghost.

Best bet is to put a guard over the front cylinder to protect it from water being splashed at it. I used a piece of plastic cut from an Evian plastic water bottle. Cheap, tacky maybe, but it certainly works on the race bike.

Cheers,

Ben

d3ano

Original Poster:

7,413 posts

269 months

Thursday 1st July 2004
quotequote all
how do you stick it on though.
As the bike is air cooled, i fear that the heat from the small rad on the front will melt the plastic.

fergus

6,430 posts

291 months

Thursday 1st July 2004
quotequote all
d3ano said:
how do you stick it on though.
As the bike is air cooled, i fear that the heat from the small rad on the front will melt the plastic.



D3ano,

I hate to piss on your fire, but air cooled engines don't have rads, as these type of engines are referred to as 'water-cooled'. Small technical point there. (unless of course you are referring to an oil cooler)

In answer to your question, just use a thicker piece of plastic, e.g. from the side of a used oil container.

>> Edited by fergus on Thursday 1st July 17:47

d3ano

Original Poster:

7,413 posts

269 months

Thursday 1st July 2004
quotequote all
Well i know its air cooled as it states that in the manual and on the webpage, but above the engine block there is something that looks like a radiator and when this gets wet (after the engine has been running) steam comes off it.
So whats that then?

I need a digital camera so that i can so you a pic.

Pigeon

18,535 posts

262 months

Thursday 1st July 2004
quotequote all
Yep, oil cooler.