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It's different for different types of ignition systems. Some of the self-timing systems need to have a jumper in place before you can change the timing. Some operate from a sensor on the cam or crankshaft, some still use a distributor with a star wheel and pickup coil to drive the ignition control system. Unfortunately, there is no single way to tell you how to set the timing but you should be able to detect a spark by pulling a single sparkplug wire and connect it to a spare sparkplug. Then crank the engine while someone watches the sparkplug for a good strong spark. If you don't get a spark, many of the newer vehicles have self diagnostics that will give you information regarding what is actually wrong. If yours is one of them, use a code scanner to get information about the ignition, emissions and injection systems. It's difficult to know what to tell you without knowing more about the specific vehicle.

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โˆ™ 2006-03-31 05:16:35
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Q: How do you check the firring and the coil?
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