distributor cap cracked
Distributor caps typically crack due to excessive torque when installing them or as a result of being struck.
Image courtesy of Vincent de Groot, via wikimedia commons (creative commons 3.0)
JD Laukkonen
JD Laukkonen turned wrenches in the north end of Seattle for a decade, so he's no stranger to the inner workings of modern automobiles. He has worked as a freelance writer since closing his shop in 2007, and he currently covers automotive technology for Lifewire.com.
