TDR 125 losing power

[Dave89]

Hi lads,

Just new here and plan to stick around

I have a TDR 125 - was on it today and its moving grand but after a while it starts to lose power . I got it up to 105kms today which is about 63 mile an hour. Next thing you know it starts to slow down on its own . If you hold it constantly for a while you might be lucky for it to get back up to speed but not always. Sometimes you have to wait until you go down a gear and then it will be grand again for a while . This happens 2 to 3 times in a 10 mile journey.

Anyone have any ideas ? could this be the YPVS ?

Thanks very much for your time,
Dave

[ms51ves3]

What's your temperature gauge saying when this happens? Is it getting close to the red?

[Dave89]

your gonna laugh mate but the temp gauge doesnt work ; but it has a new gasket and head so the water is defo circulating . Would you say removing the thermostat would help ?

Thanks for your reply buddy,
Dave

[ms51ves3]

[Dave89]

to be honest i bought the bike in a box to do it up as a project . I have pumped more money into it than i would have if i bought a second hand running machine . Now i also need a new back tyre so i wanted to keep the temperature gauge on hold until she's running the way she should be.

Any other ideas ?

Thanks,
Dave

[ms51ves3]

It could be a whole host of things:

Powervalve stuck in the closed position
Overheating
Lack of 2 stroke oil
Carb needs cleaning

[Dave89]

Cheers mate. Karma Given

Im gonna examine all of this tommorow.

Thanks again,
Dave

[ben350]

They have a catalytic converter inside the front pipe which can break down over time and result in a loss of pwer, either get a race pipe or if on a budget cut - gut - re-weld stock pipe.
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