Leaking Brake Fluid

[iamcams]

Every time I check my fluids under the hood my brake fluid is always low. Recently replaced the fuel filter and noticed it was wet. Looked further down and I took this picture. Believe it is my brake fluid but how do I figure out where it is leaking or from what?

 

[Uncle Gump]

The fluid level will slowly drop as the reservoir as the front dust pads wear... and is normal.

Check the vacuum booster where the master cylinder bolts. Fluid running down the booster would indicate a leaky master cylinder.

Metal lines rusting is always a possibility. They last about 10-12 years here in the rust belt.

I can't tell much by your picture... but it appears to be near the RABS valve. It or the lines going to it could also be the problem.

 

[iamcams]

This might be better.

 

[Uncle Gump]

That is the RABS Valve...

I'd suggest cleaning it up with brake cleaner... blowing it dry. Then pump the brake a couple times with the help of someone on the pedal and watch it for where it's coming from.

You have a 50/50 chance of it being the valve or the line.

 

[Terrys87]

I am not sure what a RAB valveis, as I work on the older trucks. Give a good bath in the general area and liked mentioned, have some one to press on the pedal real hard for a few.

 

[Uncle Gump]

I am not sure what a RAB valveis, as I work on the older trucks. Give a good bath in the general area and liked mentioned, have some one to press on the pedal real hard for a few.

RABS - Rear Antilock Brake System

 

[sgtsandman]

My money is on the brake line being the leaker. If you have the time and the money, replace all the lines you can. Once one starts going bad, it's only a matter of time before the others do. The only one you may want to ignore is the one that runs along the frame behind the gas tank. You need to drop the tank in order to get at that one. As far as I know, that one has not failed on the 1998 I used to have. Be prepared to have a field day on the fittings. Some you will need to reuse because they are an odd size and parts stores won't have them. I think the one at the union just front of the fuel tank was the odd one. Also, there will be no premade lines. You will need to make and bend your own. Nicop brake line is best. The coated stuff will work but won't last as long and is slightly harder to work with.

 

[mr_manny]

If you don't already have one, invest in a nice flaring tool.
Makes making lines super easy.

Good info on the line before the tank.
Thanks

 

[SenorNoob]

Maybe it's tighter on OP's 92 model, but I had no problem making a section of line fit right between my tank and frame rail.