this is the deal my friend has an 89 civic si ran fine then he heres a loud pop and the car died. when you turn the key it just makes a loud grinding noise now, like no spark.. what could it be? we have checked timing, distributer, coil, wires, plugs.
but on the points inside the dist. two are dug into and the other two are not!!??
pulled the valve cover and the cam and valves are woring fine.

hhhhhheeeeeeelllllllllpppppp!!!!!