I bought a new timing light and need a lesson on how to use it. My car has been experiencing hi temps and loss of oil pressure and pinging that I'm associating with too much retarding on the timing. Can anyone give me a lesson on how to use a timing light. I can hook it up, unplug the vac. line. Once I my timing marks on the crank are 0, 6 and 12. I don't know what the timing was set at. Should I get the idle to about 800rpm and then what mark should I point the light to? I need a lesson on what I should be doing from step 1 to the end. Or should I just take it to a garage?