Short cuts usually come back to bite you in the ah hum. I have to admit tho, I've worked on many an engine that had timing issues. So out comes the number one plug. Feel for the compression stroke with the thumb. Move the timing mark to TDC. Reset the distributor to number one firing position. It's never failed me. Too lazy to remove a valve cover that isn't leaking. If the valve cover is off, I'll do it Jerry's way.
Rick
