How do I fix it has very little compression in one cylinder on 1995 Plymouth Neon

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This is the single ohc engine.I thought it was a bad valve, its very hard getting up hills how do I get that fixed and how much does it cost?
(1) Answer
(1) Comments
the head most likely will have to be removed and a valve job done.

cost runs around 1200-1500. i would have a shop check it for you before jumping to conclusions.