Are You Pumping Your Brakes To Stop Your Vehicle?
If you are pumping your brakes to slow down or stop your vehicle, you have a problem that needs to be fixed right away. There are many different causes for this condition, so be sure to properly identify the problem.
Caused by: Damaged pad or oil/grease contamination on brake pad or shoe.
Solution: Inspect and clean as necessary. Find cause of oil/grease if applicable. 
Caused by: Defective caliper piston, wheel cylinder or caliper sliding mechanism.
Solution: Inspect sliding pins and caliper piston for damage, binding or stuck components. Caliper replacement may be necessary if parts can’t fixed. 
Caused by: Excessively worn pads or shoes.
Solution: Replace worn pads or shoes. 
Caused by: New brakes are not fully bedded in.
Solution: Follow brake pad or shoe manufacturer’s recommendation for proper bedding in procedure. 
Caused by: Faulty power brake booster or loose vacuum fittings.
Solution: Inspect booster fittings and replace power brake booster if necessary. 
Caused by: Low fluid level/leak. The hydraulic brake system is a closed type system, meaning that if the brake fluid is low, there is a leak somewhere.
Solution: Find and repair leak, bleed the system of any air in the fluid. 
Caused by: Air in the brake fluid. Brakes may have overheated.
Solution: Inspect brake system for leaks. Replace faulty components and bleed brakes. Consider brake upgrades that will resist overheating. 
Caused by: Worn master cylinder seals can’t create enough pressure to activate brakes.
Solution: Replace master cylinder and bleed brakes. 
Caused by: Rear drum brakes aren’t adjusted properly.
Solution: See page on adjusting drum brakes
Return from Pumping Your Brakes to Brake Troubleshooting
Home to DIY Brake Repair

|