Home > categories > Automotive & Motorcycle > Brake Systems > what would cause my brake fluid to look like this best answer gets 10 points?

what would cause my brake fluid to look like this best answer gets 10 points?

ok i bleed my brakes and i went to add fluid and the color of my fluid was black like it had dirt or something like that i dont know what the previous owner did to it but it looks dirty as heck here is the question what would cause this and how can i flush my entire brake system the easiest way plwase help i am mechanicaly inclined so im perty sure i can do myself just need info on how to thanks


Hi All, This problem is due to one of these things: 1. wear in the brake system, 2. overheated brake fluid, 3. too much moisture in the brake system. Which leave this question to be asked! How old is the vehicle has it lived in a cold area for a long time? If it is a car or truck from the 70s or 80s with no time taken to service the brake system, it would have a lot of moisture the lines or if it's a low mileage vehicle, lack of use to keep the moisture out of the system. Which could also mean the master cylinder booster have seal problems due to moisture or old age of the system. The overheating of the fluid is due too much usage of the brakes burnt or cooked the fluid in the system. Having said that here is the fix to any of these problem/s. Bleed the brakes from the back wheel on the right side for left hand drive or back wheel on left side for right hand drive vehicles till you get clear brake Fluid. Then you have to go to the other side back wheel do the same till you get clear fluid then do the front brakes doing the same the way, doing the longest brakes away from the master cylinder, then finish with the closest cylinder to the master cylinder. This will take two persons to do the job as someone has to pump the petal to push the old fluid out while you bleed the cylinders the trick is to get the person who pumps the cylinder to keep a eye on the fluid in the master cylinder bottle keep topping it up as you bleed them? Now if you find in a few weeks later that it has gone black again then bleed it again as some moisture may still be in the lines or start checking the seals in the master cylinder, check the brake lines for white markings (moisture) the system for age, wear tear or any other problems which could mean replacement of master cylinder etc. Which is rare, but happens? Best wishes good luck for safe driving when done. Cheers
May 28, 2018
If the brake system is operating properly the system would have to bled until the fluid that comes out of the bleeder valve is the same color as the fluid being poured in. The system may need to be bled in a certain sequence or order. For example if the master cylinder is on the left side, you'd have to begin with the proceedure on the cylinder farthest from it. In this case, rear right, then rear left, then front right, and lastly front left. So with the vehicle your working on i wouldn't know specifically, but i suggest maybe buying a service manual from your local auto parts store for about twenty-five dollars. The publisher is either Haynes or Chilton and for that amount it would be worth it. It's neccessary to know ahead of time if anything important has to be done along with steps or proceedures when working with a vehicle. Plus it can assist you in the future and assuming you're the type that will work on a car if you can DIY, you can say it's like an investment.
May 28, 2018
First check for leaks and fix them by replacing whatever parts are needed (typically brake cylinder seals and pads if in contact with fluid). Buy the right DOT grade brake fluid for your car and keep bleeding and filling up until you have the fresh fluid coming out of the farthest wheel cylinder (usually rear rh side). Repeat on all wheels. And no, black color isn't normal, except at the wheel cylinder side when you start bleeding - after a couple of squirts it must become clear, or whatever the original fluid color is. One thing is certain - it wasn't taken care of adequately. The fluid in most new cars must be changed every two years for good reasons, but beyond this question. Even if you do it 6 months later nothing bad will happen, but you MUST do it on a regular basis, much like engine oil. If you do it yourself, make sure you know what to do and where to take old fluid. You might need a friend to help with the pedal while you bleed the system.
May 28, 2018
May 28, 2018

Share to:

Hot Tag

Cast Iron Parts