some of the signs are hard starting and missing a little also back firing back through the exhaust or the top of the engine,,also ,,if it has a lot of miles on it,,it needs to be changed anyway,,there supposed to changed every 60 thousand miles whether there bad or not but most people don't do it,i don't even do it,,and i do this for a living,,but they will break and do some damage if not replaced,if you have any of these signs or you have a lot of mileage on it,,it may be time to change it,,just to prevent future problems,,good luck with it,,i hope this help,s.
2006-09-15 13:29:13
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answer #1
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answered by dodge man 7
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