Yet Another Problem with my XR250

**crazyxr250rider** · 30th July 2005, 13:21

yep already
Problem:
motor stops when water gets in by the spark plug
starts fine after i spray a bit of crc down there though
whats the easyest way to fix this

WHEN WILL THE TORMENT END?

**Ixion** · 30th July 2005, 13:24

Originally Posted by crazyxr250rider

yep already
Problem:
motor stops when water gets in by the spark plug
starts fine after i spray a bit of crc down there though
whats the easyest way to fix this

WHEN WILL THE TORMENT END?

Waterproof plug caps. And bathrom silicone

**crazyxr250rider** · 30th July 2005, 13:29

Originally Posted by Ixion

Waterproof plug caps. And bathrom silicone

Not shure what you mean explain?

**Sparky Bills** · 30th July 2005, 13:31

Originally Posted by crazyxr250rider

yep already
Problem:
motor stops when water gets in by the spark plug
starts fine after i spray a bit of crc down there though
whats the easyest way to fix this

WHEN WILL THE TORMENT END?

AYE?
How is water getting past your spark plug?
If you dont have waterproof plug caps, get some!
that should be your only problem.
Take your original cap into the bike store, and get a water proof version.

**Sparky Bills** · 30th July 2005, 13:33

Waterproof plug caps are the caps that plug onto the spark plug and HT lead.
You can get caps with rubber bits on each end of the cap, so it seals around the spark plug and stops any water getting in.

**Ixion** · 30th July 2005, 14:06

Originally Posted by Sparky Bills

Waterproof plug caps are the caps that plug onto the spark plug and HT lead.
You can get caps with rubber bits on each end of the cap, so it seals around the spark plug and stops any water getting in.

What he said. Then just for good measure, get a tube of bathrom silicone sealant from the hardware shop, and use that to seal the gap between the lead and the waterproof cap. You can also seal the plug to cap joint too but it doesn't last long cos of the heat.

Do this right and you can ride with the plug totally submerged in sea water. (So long as your air intake is above water level !. And don't close the throttle unless your exhaust outlet is also above water level !. )

**sAsLEX** · 30th July 2005, 14:34

Originally Posted by Ixion

Do this right and you can ride with the plug totally submerged in sea water. (So long as your air intake is above water level !. And don't close the throttle unless your exhaust outlet is also above water level !. )

funniest thing i seen in a while is a little suzi truck stop in the middle of a bog, towed it out and started it again and about four litres of muck came flying out the exhaust, went back through with some revs on and it didnt stall again.

**laRIKin** · 30th July 2005, 17:48

Originally Posted by crazyxr250rider

yep already
Problem:
motor stops when water gets in by the spark plug
starts fine after i spray a bit of crc down there though
whats the easyest way to fix this

WHEN WILL THE TORMENT END?

Get a jet ski spark plug cap.

**crazyxr250rider** · 30th July 2005, 22:09

Originally Posted by Sparky Bills

AYE?
How is water getting past your spark plug?
If you dont have waterproof plug caps, get some!
that should be your only problem.
Take your original cap into the bike store, and get a water proof version.

how do ya know if its water proof or not and why would water in the plug cap kill the motor

**sAsLEX** · 30th July 2005, 22:27

Originally Posted by crazyxr250rider

how do ya know if its water proof or not and why would water in the plug cap kill the motor

energy would be lost through the water earthing the HT lead to the engine other than directly through the plug is my guess, you know if its water proof if it still goes when you get it wet

**crazyxr250rider** · 30th July 2005, 22:53

Originally Posted by sAsLEX

............... you know if its water proof if it still goes when you get it wet

doh doh
clap clap

**Ixion** · 31st July 2005, 05:01

Originally Posted by crazyxr250rider

how do ya know if its water proof or not and why would water in the plug cap kill the motor

They look different. Sort of like a condom for spark plugs. Water (dirty water anyway, which it will be ) is nice and conductive. Your spark merrily takes the nice eay short cut through the water to earth, instead of doing the hard yards jumping across the spark plug gap.Therefore no spark, motor he no go.

**crazyxr250rider** · 31st July 2005, 08:01

Originally Posted by Ixion

They look different. Sort of like a condom for spark plugs. Water (dirty water anyway, which it will be ) is nice and conductive. Your spark merrily takes the nice eay short cut through the water to earth, instead of doing the hard yards jumping across the spark plug gap.Therefore no spark, motor he no go.

gues ill fix it today
silicone it is then
ive got some high temp silicone should do the trick