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I recently bought a non-running mazdaspeed 3 as my first project car. When I pulled the sparkplugs cylinder 4 had tons of carbon buildup on it, cylinder 3 had what felt like water on it, and cylinder 3 and 4 were covered in oil. granted that car has been sitting for at least 3 years and I just want to know if the engine is good or if the whole thing needs to be rebuilt.
 

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I recently bought a non-running mazdaspeed 3 as my first project car. When I pulled the sparkplugs cylinder 4 had tons of carbon buildup on it, cylinder 3 had what felt like water on it, and cylinder 3 and 4 were covered in oil. granted that car has been sitting for at least 3 years and I just want to know if the engine is good or if the whole thing needs to be rebuilt.
Wet and Dry compression tests ?
 
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