Engine trouble isn't something you should ignore. Repair is sometimes possible if engine troubles are addressed early, but more severe issues may still require an engine rebuild. These are some of the most common signs that there is engine trouble under your car's hood.
1. Knocking Noises
Once you hear the engine knocking it may be too late to avoid all damage. Knocking that is a result of low engine oil levels or issues with the oil pressure in the engine can cause irreversible engine damage thanks to a lack of lubrication.
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