A parts-store diagnosis is usually a useful starting point, but it’s not always the last word. Even an experienced mechanic can get sent down the wrong path at first, and solving something as deceptively simple as a hard-starting car can require a little detective work.
In this case, a recent TikTok clip showed the parts store said the battery was good, and creator Kyle Grodkowski’s (@methodmechanic) own test seemed to agree. But then he noticed something on top of the battery that made him reach for his multimeter again.
