Jump to content

Bike cutting out in the rain


Recommended Posts

I have a customised bike with a lifan 250 engine. Had quite a few problems, most recently a vacuum leak from the carburetor causing to splutter and stall when the revs got too high. Thats now been sorted and has been fine since. Over the last week though every time it rains it has started doing exactly the same, spluttering and stalling as soon as it goes through a puddle or gets hit by same rain. Only when it rains though, it is absolutely fine otherwise.

Any idea what this could be? I live on a small island in Thailand and most mechanics don't have the intuitive to investigate the problem so I need a point by point of what they should look at/change/fix. It is also rainy season so as a daily ride getting to work is quite a challenge when the bike isn't behaving its in the rain.


Link to comment
Share on other sites

Almost certainly going to be water getting into the electrics. First thing to check is the HT lead and spark plugs. Look for any signs of a crack in plug insulation - even a hairline crack will let water in which then arcs the ignition charge to earth. Here in the UK we ride in the wet most of the time so all electrics are sprayed with WD40 to keep water out.

Link to comment
Share on other sites

Yep , HT leads . If they can be detached from the coil I would simply replace them . One way to test them is to wait for it to rain and have a fiddle around with your bare hands with the engine running . If your arm goes into spasm you're probably on the right track .

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Sign up now

    Registration is quick and easy 

  • Create New...

Important Information

Terms of Use Privacy Policy Guidelines We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Please Sign In or Sign Up