Eugene Auto Repair

A torn CV boot does not automatically mean the whole axle is bad. Sometimes the boot has just started to split, the grease is still where it belongs, and the joint underneath is quiet and tight. In that situation, saving the original axle can make sense. The decision changes quickly once dirt, water, and road grit get inside. By the time the joint starts clicking in turns or vibrating under acceleration, replacing only the boot may be too late. What matters isn't just the tear itself, but how long it's been open and what condition the CV joint is in now. What Happens After a CV Boot Tears A CV boot keeps grease packed around the constant velocity joint while sealing out contamination. The joint has to transfer engine power while changing angles as the suspension moves and, on the outer joint, as the wheels steer. That grease protects the bearings and machined surfaces inside. Once the boot splits, centrifugal force starts throwing grease outward. You may se ... read more