Most Likely Causes:
* Right-side brake caliper sticking: This is the most common culprit. A seized or partially seized caliper piston prevents the brake pad from fully retracting, causing constant pressure on the right-side rotor. This leads to the pull to the right during braking.
* Right-side brake rotor warped or uneven: A warped rotor can cause pulsation in the brake pedal and pull to one side, especially if the warpage is uneven.
* Right-side brake pad(s) worn unevenly or sticking: Worn or unevenly worn pads can cause a pull. Similarly, pads that are sticking in the caliper can cause this issue.
* Right-side wheel bearing issue: A bad wheel bearing can affect braking, causing a pulling sensation, especially under braking force. A severely worn or damaged bearing might make noise as well.
* Brake line issues (less likely): A restricted brake line on the left side (or a leak on the right) could create an imbalance in braking pressure. This is less likely but should be considered if other issues are ruled out.
* Proportioning valve issue (less likely): The proportioning valve helps balance braking force between the front and rear wheels. A malfunction could lead to an imbalance, causing pulling. This is less likely to cause a pull to only one side.
* Master cylinder issue (least likely): While a failing master cylinder can affect braking performance overall, it's less likely to cause a pull to just one side.
Troubleshooting Steps:
1. Visual Inspection: Start by carefully inspecting the right-side brake components. Look for:
* Fluid leaks: Check the brake lines and calipers for any signs of leaking brake fluid.
* Brake pad wear: Are the pads worn unevenly or excessively on the right side?
* Caliper condition: Does the right-side caliper look seized or sticky? Try gently pushing on the caliper piston – it should move freely.
* Rotor condition: Inspect the right-side rotor for warping or uneven wear. Look for scoring or discoloration.
2. Brake System Bleeding: Bleeding the brakes might help if there's air in the system, although this is less likely to cause a one-sided pull.
3. Professional Inspection: If you're not comfortable working on your brakes yourself, take the vehicle to a qualified mechanic. They have the tools and expertise to diagnose the problem properly and make the necessary repairs. Brakes are a critical safety system.
Important Note: Driving a vehicle with braking problems is dangerous. If you notice a significant pull to the right when braking, avoid driving the vehicle until the issue is resolved. Have it towed to a mechanic for repair.
