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How do worn valves affect the operating engine?

In: Cars & Vehicles [Edit categories]

Answer:

Worn valves will not seal completely, will not open completely, or open as far as they should.
This will cause incomplete combustion, backfire of exhaust gasses, release of compression, and escape of oil into the combustion chamber.
Engine will lack power and smoke.

First answer by Ganderton. Last edit by Ganderton. Contributor trust: 2865 [recommend contributor ]. Question popularity: 1 [recommend question].

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