[ClutchAutomatic]

I am about to hit 1000 km on my MSX and on the way home I notice a huge decrease in power in 3rd and 4th gear. With only 1 km from home I manage to get it in the drive way and the rear disk is smoking hot. I was on a 40 minute round trip bike and a 10 minute trip from work an hour before. Hopefully when it cools down it will release. But when I try to manually use the foot brake it does not move the pump. I do have aftermarket rear sets on and I power wash it every week. Any suggestions?

 

[ClutchAutomatic]

After it cooled down, it seems to be functioning normally again.

 

[Highsider989]

Strange, does the rearset include a return spring for the brake pedal? If it gt that hot I would disassemble the system from the bike and check it thoroughly, specifically see if the piston seal is damaged from heat. Your rear pads are likely toast, you will need new ones. Check the disk for warpage, could you have been riding the pedal? Most likely the rear sets somehow didn't allow the pedal to return fully. Did you lube the pivot point and check for free movement? Good luck with this.

 

[rkwfxd]

Strange, does the rearset include a return spring for the brake pedal? If it gt that hot I would disassemble the system from the bike and check it thoroughly, specifically see if the piston seal is damaged from heat. Your rear pads are likely toast, you will need new ones. Check the disk for warpage, could you have been riding the pedal? Most likely the rear sets somehow didn't allow the pedal to return fully. Did you lube the pivot point and check for free movement? Good luck with this.

Yep, I would pull all of those apart and check them thoroughly.

 

[ClutchAutomatic]

The rearset does have a return spring, and I was not riding the pedal. The pump was stuck under heat, but now after it cooled down the pump is working again. I will go try to do a 25 minute round trip on it and see if it still needs fixing.

 

[Highsider989]

The rearset does have a return spring, and I was not riding the pedal. The pump was stuck under heat, but now after it cooled down the pump is working again. I will go try to do a 25 minute round trip on it and see if it still needs fixing.

You bet it does. Brakes don't just seize for no reason. I assume by "pump" you are meaning the master Cylender? I highly recomend you replace all the brake fluid and thourghly bleed the system before test riding. Be careful.

 

[Highsider989]

How are you in Texas and riding an MSX?

 

[ClutchAutomatic]

How are you in Texas and riding an MSX?

Upon further investigation, while driving with my girlfriend on the back and she had a ps3 in between us. My long legs and big shoe might have been in the position to have lightly been on the rear brake. As this second ride seems to not lock up the brakes again. So I guess here's another
tip from a first hand user. I have been in Pattaya, Thailand for the past 9 months working as a math and English teacher so that's why I have a msx. I will be getting a grom when I come back late October. Pre-ordered black, but I am bringing back white plastics and projector headlights. Projector headlights are less than 25 dollars here.

 

[Highsider989]

It's good you have likely found the problem.

 

[jmzd4]

I power wash it every week.

well it looks like you already have the problem solved, but I was going to say the pressure washing might have something to do with it. When ever I pressure wash my Tacoma the breaks lock up tighter than a virgins twat.

 

[Highsider989]

Good thought. If I power wash a bike it's from a fair distance and I get nowhere near bearings pivot points or electronics. A bike can be rinsed by power washer but should be washed by hand. My bikeS like to be dirty.

 

[rkwfxd]

Good idea to pull a lot of the bike apart and lube everything up nicely once a year or so anyway. I try to do that will all my dirt bikes and Harley.