Q: Car has rough idle and ticks.
Cylinder 1 has low compression and the engine needs to be rebuilt. The engine also idles roughly and has a ticking sound while accelerating.
If the engine has low compression on one cylinder it is usually an indication of a damaged valve seat or possibly a bad head gasket. If it is also accompanied by a ticking noise then there may be an issue with the valve train also. If you already need an engine rebuild it will take care of these other noises that you are getting.
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