Bleeding Issue with Front Caliper

[Christopher R.]

I have another thread open about the lights on my 72. I am also having an issue with the front caliper not getting any fluid into it. All the other calipers have been bled its only the front drivers side that is not getting fluid. We know that the proportioning valve is not set right so we are going to fix it. We are also going to change the master cylinder to a replacement which has the bleeder valves on it. Does anyone have any advice as to anything else that should be addressed or anything else that we should check for. This seems to be the only solution to us right now.

[Bill C.]

Re: Bleeding Issue with Front Caliper

collapsed rubber brake line.

or rusted bleeder hole

[Christopher R.]

Re: Bleeding Issue with Front Caliper

collapsed rubber brake line.

or rusted bleeder hole

Everything is brand new. There is fluid going into the line but once it gets to the caliper it wont go through.

[Patrick H.]

Re: Bleeding Issue with Front Caliper

Obstructed bleeder or obstructed crossover.

If you remove the bleeder and no fluid comes out, then you may have to remove the caliper and find the problem.

[Gene M.]

Re: Bleeding Issue with Front Caliper

Obstructed bleeder or obstructed crossover.

If you remove the bleeder and no fluid comes out, then you may have to remove the caliper and find the problem.

No cross over on the left front. It has a 4 inch line direct out of the brass block if it is anything like my '68.
Suggestion to remove bleeder screw is by far the easiest. It's easy to disconnect the steel line at the frame to see if fluid comes out also. More like a bad caliper or plugged rubber line if nothing comes out bleeder.

[Joe L.]

Re: Bleeding Issue with Front Caliper

Obstructed bleeder or obstructed crossover.

If you remove the bleeder and no fluid comes out, then you may have to remove the caliper and find the problem.

Patrick and Christopher------


YUP.

[Edward J.]

Re: Bleeding Issue with Front Caliper

Everything is brand new. There is fluid going into the line but once it gets to the caliper it wont go through.

Chris, Is it possible there may have been a piece of a plastic cap or rubber plug blocking the hole where the rubber hose fitting goes into caliper? I cannot imagine that something is up with caliper other than a obstruction somewhere.

[Christopher R.]

Re: Bleeding Issue with Front Caliper

Issue resolved. Muskegon sent me a replacement caliper and we pressure bled the system using a tool from Amazon.com what worked perfectly. no issues with the brake light on the dash and the brakes are perfect. Pressure bleeding is the way to go.

[Joe L.]

Re: Bleeding Issue with Front Caliper

Issue resolved. Muskegon sent me a replacement caliper and we pressure bled the system using a tool from Amazon.com what worked perfectly. no issues with the brake light on the dash and the brakes are perfect. Pressure bleeding is the way to go.

Christopher------


Was the tool the Motive Products pressure bleeder?

[Gene M.]

Re: Bleeding Issue with Front Caliper

Should not have to pressure bleed. Gravity bleed should get a steady dribble out the bleeder screw. It sounds like you had a something bad with the caliper. The pressure bleed had nothing to do with the solution.

[Christopher R.]

Re: Bleeding Issue with Front Caliper

Yes, it was the motive bleeder system. Here is the trick though. You follow the instructions exactly and pump it up to 15 pounds and the brakes bleed perfectly and the brake switch stays in place - perfect. The problem is that the tool comes with these cheap clamps so please run out to Harbor Freight and get two 6 inch C Clamps and you are good to go. One of the best investments I have made and solved weeks of problems in one afternoon.

[Gene M.]

Re: Bleeding Issue with Front Caliper

Christopher, there is no trick to bleeding brakes, pedal press and release will get the job done. You were good on three of the four calipers and once you "corrected" the bad one everything bleed out fine. Believe me the pressure system was not the correction factor.

[Gary V.]

Re: Bleeding Issue with Front Caliper

I agree with Gene. I always had success bleeding the calipers using the brake pedal press and release outlined in the Corvette repair shop manual.

[Frank K.]

Re: Bleeding Issue with Front Caliper

I had the same problem. It was a the caliper rubber hose. when I suspected it I pulled off and blew air through it. It blew fine . Placed on car, caliper was not getting fluid. Removed and installed a ss hose and everything was fine.

[Thad L.]

Re: Bleeding Issue with Front Caliper

Christopher that is my technique exactly. Been doing it for over12 years!!
Thad