What is your question?
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What is your question?
Soft to no brakes. New master cylinder,new vacuum booster, pads n shoes. Bleed brakes several times good fluids at bleeding valve. Still little to pedal. If I step on brake there's cavitation?
2 Replies
IF the booster is the correct application then that can be eliminated as a suspect!! .. Did you 'properly' bench bleed the master cylinder before installing?
Shazam good pedal, now what? Calipers?
Read my other reply.
Ok mate mission accomplished! Brakes work perfectly but had to open a fitting on anti lock and depress pedal to allow it to "burp". Then air lock came out bleeding valve. Things progressing well at this point. Thanks much for your help
Yes MC was bled per instructions. I have bled brakes with motor running a not running and engine off . Good flow from bleeding valve at wheels. Still soft pedal and down to floor
Don't know your skill level but : With suitable pinch tools - clamp the rubber flex hoses 'closed' shut that's going to both front calipers and try pedal again .. Post test results.
Shazam good pedal !!! what now? Skill level good.
Remove the rest of the air from brake system! .. Bleed the brakes until you're sick of it .. Then do it some more! .. I use a special vacuum bleeder for this but it CAN be done the old school way .. Just takes a long time... Make sure the person pumping brake pedal knows exactly what to do .. Keep master cylinder topped off at all times! Now - there may be a problem with the disc pads binding (springing) in the mounting bracket resulting in excessive caliper piston travel .. That definitely needs to be considered also!! Improving brake pedal (less travel) by clamping hoses 'proves' the problem is from clamp out to wheel .. NOT from clamp back to vehicle .. Think about it .. Good luck with it!