Possible brake issue

[Fatboydel]

This morning as I was prepping for a ride I rolled the bike off the main stand and the front brake lever came straight back to the bar! I pumped the brake a few times and it was OK so I went out for a ride and it was fine.

One thing I did notice when I was pumping the lever there was a sort of sucking noise, not sure if this is normal, but it stopped when the brake pressure came back.

I checked the fluid reservoir and it was full and there are no leaks.

Any idea what caused this?

 

[NicD]

did you take calipers off beforehand?

 

[JJH]

I don’t know what’s wrong with it. A guess wouldn’t help. I would be very careful and weary till you know what happened. What if the same thing occurs while on a ride? JJH

 

[Fatboydel]

No, I haven’t touched anything, it was fine last time out. Will check it again in the morning.

Is the odd sucking noise normal when pulling the front brake, I don’t recall hearing it before.

 

[squibb34]

Seems odd ........ has the reservoir been over-filled & isn't breathing properly?

I assume you haven't got any warnings on the dash. Whatever, proceed with caution.

 

[AberdeenAngus]

Master cylinder seal passing?

 

[Fatboydel]

Not use, I haven’t touched anything and the reservoir is at the normal level. It was fine after I pumped the lever a few times, just made a funny noise, like air hissing out but I couldn’t see where it was from. Anyway brakes were fine for a 2 hour ride today. Will check it again in the morning.

 

[JJH]

Where is your bike parked? Could someone have pushed the pads away from the discs? Depending on the amount of wear in the pads it could take 3-4 squeezes of the lever to bring the pads back into contact with the disc. I sometimes push the pads back to stop them sizing up. Never forgot to pump out the pistons though. JJH

 

[Fatboydel]

It was locked in the garage, so no one touched it. I just checked it this morning and it is all good still, so will leave it for now.

Bike is due a service so I will ask them to check it.