![]() For this example it uses “BTDC” there is also an “ ATDC”. This means you want to line up the pointer using the timing light with the 6° timing mark on the crank pulley when the engine is idling at 750 rpm. For example, 6 Degrees BTDC 750 rpm with a firing order of 1-5-4-2-6-3-7-8. Your car’s spec sheet should tell you what your timing setting degree should be. ![]() ![]() You may also see a pointer on the engine block that will point to these marks as well, make sure you can point the timing light to this point. Be aware that on some cars the timing marks are located somewhere else and you should consult either your owner’s manual or another instruction manual. Rotate the crankshaft pulley so that you can see the timing marks visible on the crankshaft pulley and easily line up the timing light to this point. The largest clip (the one with the thickest insulation) goes on your No 1 spark plug lead by attaching the clip around the wire that leads to your No 1 spark plug. ![]() If not, then clean as required.Ĭontrols explained: R/A = toggle from rev counter to advance +/- = Adjustable advance timing 4/2 = swap between 2 and 4 cylindersĬlamp the red clip to the positive terminal of your car battery and the black clip to the negative terminal of your car battery. Make sure the battery terminals are clean enough to allow for a good connection. Make sure the engine is off and the key is removed from the ignition. Connect your timing light as instructed by your vehicle manual. ![]()
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