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What are the symptoms of bad or old spark plugs in a '03 jeep wrangler?

Dec 17, 2009 by Jared | Posted in Maintenance & Repairs

i think that my spark plugs are worn out. My Jeep feels like if it loses power in first gear and has unstable idle. What would the spark plugs look like if they are old and I took them out, and what are the symptoms of having old ones?

loss of power, hard starting, missing and rough idling.

bandit_60 | Dec 17, 2009

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