2000 sv650 bogging in heavy rain.

[widepants]

Originally Posted by yorkie_chris

Nah doesn't help, tried that.

And then you gaffer taped some guttering on the end of your mudguard

[yorkie_chris]

Yes, yes I did. This was in around 2008 I think.

Since then I've done about 75000 miles with that mudguard. I did have to replace some of the tape the other year though.

Originally Posted by TamSV

Probably water getting at the front plug, causing the bike to run on one cylinder. Very common and documented alot on here - have a search.

There's a drain hole on the RHS of the front cylinder so make sure that's clear.

Long term fix is a fender extender on the front mudguard and waterproof grease around the front plug cap.

I had the exact same problem yesterday. And as someone suggested, thrashing it kept it alive and running on the motorway, but it was a crappy situation.

I will have a look after this drainhole tonight.
Where can I get the waterproof grease and would you apply it to the spark plug? Wouldn't the grease just fry?

Does anyone know where I can get the fender extender as discussed?

[yorkie_chris]

Pop the HT cap off, blow air (if you've a compressor) or just WD with the straw up the drain hole to make sure it's clear.

Grease isn't an exact art.
Just get a gopping great lump of it and splatter it around where the HT lead seals(or doesn't) into the top of the cylinder head cover.

This can be very effective and combined with a fender extender completely solves the issue.


Fender extenders are available various places online, or you can just gaffer tape a bit of plastic to the back of the mudguard for the moment, works a treat.

[Biker Biggles]

You put the waterproof grease around the rubber grommet that pushes into the top of the plug recess and holds the plastic plug cap in the cylinder head.So the fender extenda stops the jet of water coming off the wheel straight at the front plug,and the waterproofing deals with any remaining water that still gets in the wrong place.If that doesnt solve it,you may need a new HT lead as well.

Thanks guys.

HT?

[Biker Biggles]

HT---High Tension-----The thick wire that runs from the coil to the spark plug.They wear well but ultimately if the thick coating starts to leak the leccy out they fail.If you run your engine in pitch darkness look at the HT leads and see if you can spot any sparking along them.If so they are leaking leccy.