ty250 no spark

Need help finding information or parts for that old machine in your shed? Someone in here will know!

Moderator: Moderators

Junior participant
Junior participant
Posts: 12
Joined: Tue Nov 17, 2015 8:40 pm

ty250 no spark

Postby tjay7 » Thu Dec 03, 2015 7:00 pm

Hi All,

I recently purchased a TY250 b as a project and have only just started playing around with it. I cant seem to get a spark and have done a few things to troubleshoot but still no luck. Carb seems clean however I think ill have to pull it apart and clean the jets.

First, tested for spark with plug earthing on the head - No sign
Second, swapped for a new spark plug - still no luck.
third, disconnected the kill switch - still noting

What is the next step, should I be pulling the flywheel cover off and check the points?

David Lahey
Posts: 3693
Joined: Thu Jun 05, 2003 7:01 pm
Bike: Many Twinshocks
Club: CQTC Inc, RTC Inc
Location: Gladstone, Queensland

Re: ty250 no spark

Postby David Lahey » Fri Dec 04, 2015 7:45 pm

hard to say without more info about the bike, but the ignition points are a common reason for lack of spark.
You should be able to have a look at them opening and closing through the hole in the flywheel

relax, nothing is under control

User avatar
A grade participant
A grade participant
Posts: 198
Joined: Sat Feb 15, 2014 5:04 pm
Bike: 349 Cota
Club: NA

Re: ty250 no spark

Postby Kombivan » Wed Sep 25, 2019 2:12 am

Spark plug cap can break down and do often.

A grade participant
A grade participant
Posts: 181
Joined: Tue Nov 09, 2010 4:22 am
Bike: Ty250A
Club: ATAQ

Re: ty250 no spark

Postby Guy53 » Wed Sep 25, 2019 8:16 am

After having checked that the point open AND close, you can do the sand paper test: when the point are close slightly pry them open with a screw driver through a hole in the flywheel and lightly sand them with an extra fine piece of sandpaper ( I usually use a nail file ) check the sandpaper for trace of oil. Do not over sand. If you have a spark after that, it's time for new point.

Return to “Twinshock & Classic Trials”

Who is online

Users browsing this forum: No registered users and 4 guests