Bike trys to cut out when raning

[andrewvincent]

My 2006 dt125re trys to cut out when its raning why?

Edited March 15, 2022 by andrewvincent

[dynax]

Possible cause water getting into the HT lead somewhere and shorting out, check for any cracks in the lead, and also check the plug cap for signs of water ingress.

[Mississippi Bullfrog]

Also check the spark plug, a hairline crack in the insulation can hold water which allows the ignition charge to leak to earth.

 

You may not be able to see damage to a HT lead if it's internal. If you're getting problems in the wet on a bike that's 16 years old I'd replace the HT lead and plug as a matter of course and see how that goes. Give all the electrics a spray with WD40.

[onesea]

8 hours ago, Mississippi Bullfrog said:

Give all the electrics a spray with WD40.

Man after my own heart, although I suggest spraying in sections. Start with HT lead spark plus, then rest of wiring.  Done this way you might be able to isolate the location of the fault.

[andrewvincent]

8 hours ago, Mississippi Bullfrog said:

Also check the spark plug, a hairline crack in the insulation can hold water which allows the ignition charge to leak to earth.

 

You may not be able to see damage to a HT lead if it's internal. If you're getting problems in the wet on a bike that's 16 years old I'd replace the HT lead and plug as a matter of course and see how that goes. Give all the electrics a spray with WD40.

Yeh the HT lead is only about a year old 

[andrewvincent]

[andrewvincent]

Just now, andrewvincent said:

This is the pain

[Mississippi Bullfrog]

18 minutes ago, andrewvincent said:

Yeh the HT lead is only about a year old 

Is it a good quality bike lead? I've known people buy cheap HT leads on smaller bike engines and they don't last long. Bikes work HT leads much harder than cars. 

[MikeHorton]

There's so a lot of knock off leads on ebay etc always best to buy those sorts of things from a well known supplier 

[andrewvincent]

54 minutes ago, Mississippi Bullfrog said:

Is it a good quality bike lead? I've known people buy cheap HT leads on smaller bike engines and they don't last long. Bikes work HT leads much harder than cars. 

I brought an orginal one from a supplier not a repro 

[MikeHorton]

As said then it'd a case of maybe doing a bit at a time with wd40 and seeing if that gives solution

[MikeHorton]

Looks a well maintained bike hope you sort the issue 

[Mr Fro]

2 hours ago, andrewvincent said:

I brought an orginal one from a supplier not a repro 

If you're unsure if it's the lead or not, you can test it by wrapping insulating tape round it. If the problem goes away then it's the lead. If it doesn't then it's probably something else.

[Mississippi Bullfrog]

58 minutes ago, Mr Fro said:

If you're unsure if it's the lead or not, you can test it by wrapping insulating tape round it. If the problem goes away then it's the lead. If it doesn't then it's probably something else.

Just make sure it's thoroughly dry before wrapping it in tape. Stick it on a radiator overnight.

[andrewvincent]

On 15/03/2022 at 20:41, Mississippi Bullfrog said:

Just make sure it's thoroughly dry before wrapping it in tape. Stick it on a radiator overnight.

It's funny because I e been spraying the connection to the starter motor and it never cut out in the rain yesterday maybe it could be shorting out when wet hopefully cheers for all your answers guys

[onesea]

1 hour ago, andrewvincent said:

It's funny because I e been spraying the connection to the starter motor and it never cut out in the rain yesterday maybe it could be shorting out when wet hopefully cheers for all your answers guys

Insulator cap missing?