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How could this be? If there is a small amount of air in the left side it will cause this. Also if the left break hose is weaker than the right it would require harder pressure to the right to get the same grab. If the fluid is old it would be a good idea to replace it as well if you bleed the brakes or replace the caliper hoses. Make sure to use "DOT 5" it is not the same as car brake fluid. The difference is the DOT 5 is synthetic and withstands heat better.
Hi, thank you for answer. I forgot to say the mc is new, only one month old. So the fluid is not old. The break hose is that the tube which leads the fluid ? They will e new too. You say harder pressure to the right, but it is the left that gets hot.
But I don´t know if there is air, since it is new. Same here: air would make it softer, so it is not air in the left. But it could be air in the right, so the left gets more pressure ?