Do spark plugs have washers?
Do spark plugs have washers? Some plugs come with washers. Those that don't generally have tapered seats. The engine/head is configured to use either a plug with a washer OR a tapered seat. A tapered seat plug will not seal right in a head intended to use a plug that takes a washer and vis-versa. Do spark plugs have gaskets? Bad Valve Cover Gaskets Spark plugs are not the only component installed on cylinder heads. The role of the valve cover gaskets is keeping the oil on the cylinder heads and away from the rest of the engine. Due to...