However, there are certain guidelines you can follow if you want to do the work yourself. ... This is merely a guide; you should still consult your mechanic or a person who is knowledgeable about cars before you begin tuning up your car. ... Go to an auto supply store and purchase spark plugs, condenser, distributor rotor and distributor cap. ... With the engine idling, point the light at the timing marks and the light will cycle off and on rapidly, corresponding with the power going to theanbsp;...