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My 1998 Honda CRV seems to be misfiring. I have replaced the ignition coil and the ignition module, the spark plugs and fuel injection cleaner, but the engine still misfires and shakes. Other than this it seems to perform normally. The service workshop believed the problem could be solved by "R&R cylinder head for reconditioning" which would cost about $2000. I am very reluctant to spend such money on a 15-year-old car. What do you think is causing the misfiring and whether I can ignore the misfiring and continue using the car?
Your mechanic appears to believe the valves are burnt, which could be possible, but he should be able to detect it if they are. I wouldn't pull the head off unless I had results from a compression test that shows a loss of compression. Try cleaning the throttle body.
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