turbogrill Posted August 5, 2017 Report Share Posted August 5, 2017 Hi, Yesterday I noticed that the brake fluid level was very very low, almost empty in one of the reservoirs. Last time we raced was several months ago. The pedal also had a lot of travel in it. I added some brake fluid and it feels much better now. Obviously it needs a flush/bleed. I can't find a leak, could there be any other explanation to why the brake fluid is low?? Quote Link to comment Share on other sites More sharing options...
Technical Advisory Committee Andrew D Johnson Posted August 5, 2017 Technical Advisory Committee Report Share Posted August 5, 2017 The fluid drops the more volume of pad material used. 2 Quote Link to comment Share on other sites More sharing options...
revvhappy Posted August 5, 2017 Report Share Posted August 5, 2017 If the fluid level dropped during a race it was probably due to pad wear and the pistons moving further out in the calipers. If it happened while sitting in the garage you have a leak. Quote Link to comment Share on other sites More sharing options...
JDChristianson Posted August 5, 2017 Report Share Posted August 5, 2017 Sounds like a leak to me. Unless of course it was parked that way, do to worn out raced pads. Quote Link to comment Share on other sites More sharing options...
wvumtnbkr Posted August 5, 2017 Report Share Posted August 5, 2017 So, weirdly, my master let all the fluid out of it after wgi this year.... I had to get a new one because I could not find the leak. Quote Link to comment Share on other sites More sharing options...
craig71188 Posted August 5, 2017 Report Share Posted August 5, 2017 1 hour ago, wvumtnbkr said: So, weirdly, my master let all the fluid out of it after wgi this year.... I had to get a new one because I could not find the leak. Sometimes the master cylinder IS the leak - pull the boot off the back and see if it is wet. When they start to fail, they will often leak fluid past the cups and out the rear of the cylinder. 2 Quote Link to comment Share on other sites More sharing options...
Racer28173 Posted August 6, 2017 Report Share Posted August 6, 2017 23 hours ago, revvhappy said: If the fluid level dropped during a race it was probably due to pad wear and the pistons moving further out in the calipers. If it happened while sitting in the garage you have a leak. He's right. If you still have the completely spent pads on both the front and rear, that is where your fluid is: in the calipers. If you topped it off with spent pads, you will definitely have brake fluid coming out of the master cylinder when you start replacing the pads. Been there done that. And then you might say : I found the leak! It was the master cylinder - it is all over the outside of it. Brake fluid doesn't evaporate for the most part, so keep that in mind as you are looking for leaks. But, as noted above, there is a good possibility that you don't have a leak. 1 Quote Link to comment Share on other sites More sharing options...
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