![]() Check that your distributor is adjusted properly using a timing light. ![]() If the ignition is overly advanced or retarded, the spark will fire at the wrong time and could cause incomplete combustion and a rough running engine. Water in the distributor cap can make it difficult or even impossible to start the vehicle. Sometimes carbon, debris, or water finds its way under the distributor cap, hindering the distributor’s ability to transfer spark to the plug wires. If the insulation on the ignition coil is worn, all that electricity may wander down a different path, instead of going into the spark plug or wire as intended.ĭistributors are spinning mechanical parts found on older cars, and as such are subject to wear. These components may wear out eventually due to the heat generated each time they fire. Ignition coils (and distributors) convert the relatively low voltage of the battery into the high voltage needed by the spark plugs. If the spark plug gap is too big, the spark may not always be able to jump the gap between the center and side electrodes. Worn spark plugs or spark plugs with an incorrect gap are a common issue, because the tip is delicate and spark plugs have a relatively short lifespan. ![]() ![]() Top 4 Cylinder Misfire Causes #1 – Problems with the Ignition System ![]()
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