how do you test plug wires and coils on the XG300? on 2001 Hyundai XG300

Number 1 cylinder misfire, changed spark plug with no change to problem, need to know how to test coil

by in Saint Joseph, MO on December 30, 2010
1 answer 1 comment
ANSWER by on December 30, 2010
I don't know how well your tool box is stocked so we will assume you don't have a lot of diagnostic tools. you can put a spark plug on the end of the cyl.1 plug wire and hold the boot with pliers about a 1/4" from a metal ground. have someone turn over the engine and see if you get spark it should be a strong bright blue. No spark present, try to swap with another wire plugged on the coil cyl.1 spot, and see if you get spark, if you do you have a bad wire, if not coil is probably bad. However misfire can be caused by fuel injector problem, and valve or compression loss too. Hope this helps, Good Luck
COMMENT by on December 31, 2010
thank you for your reply,

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