![]() ![]() So even if you have a hard time getting to the plug, removing the plug from the cylinder head, removing the plug cap, and turning the cell motor with it pressed against the engine, or even pressing the kick pedal to check for sparks on the electrodes to see if you can see and check for sparks in the electrodes, is the easiest of the three factors This is a checkable item. ![]() The same is true for compression, if you remove the plug and push the cell motor, air will swoosh out of the plug hole, but without a compression gauge, there is no way to measure the pressure and know if the cylinder or valve is in good shape. A clogged air cleaner element or a dislodged or cracked air intake system pipe can cast suspicion there, but if it's a carbureted car, it's not easy to check the carb settings or the fuel injection program of an injected car. The easiest of these elements to check is a good spark, or spark plug.Įven though it's easy, it can be a hassle, as many modern motorcycle models require you to remove the cowl and gas tank before you can get to the spark plugs.īut even if you try to check the mixture, it's not easy to know if the gasoline and air are mixing properly and if the gasoline supply is not excessive or inadequate. However, we want to inspect and replace these parts according to the mileage so that we don't have to deal with engine malfunctions caused by parts costing a few hundred yen per plug.Ī good engine in good shape requires three main elements: good mixture, good compression, and good spark, and if the engine won't start, or starts but doesn't feel good, these three elements should be checked. Many recent models of motorcycles require the removal of many parts, such as the cowl and gasoline tank, in order to install and remove the spark plugs. No matter what kind of high performance engine you have, if the spark plug doesn't send sparks flying, the mixture won't ignite. Remove the spark plug and you'll know if the ignition spark flies or not. Inexpensive but more useful ignition spark tester than you can imagine.Spark load is different under atmospheric pressure and under high pressure compression in a combustion chamber.Remove the spark plug and you'll know if the ignition spark flies or not.
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