What should be done after tightening new spark plugs?

After installing new spark plugs, it is essential to ensure that they are tightened to the manufacturer specifications. This step is crucial because proper torque settings prevent issues such as excessive vibrations, which can lead to the failure of the spark plugs or damage to the engine’s cylinder head. Over-tightening a spark plug can strip the threads, while under-tightening can cause it to loosen and create a poor connection, resulting in misfires or engine performance issues.

Following manufacturer specifications ensures optimal performance and longevity of the spark plugs, as they are designed to operate effectively at specific torque levels. This attention to detail is an important practice in maintaining engine health and preventing costly repairs in the future.

Other options, while they may be relevant in different contexts, do not directly relate to the immediate action necessary after tightening spark plugs. Checking oil levels, running the engine, or inspecting the air filter may be part of general maintenance, but the critical focus right after installing spark plugs is ensuring they are properly torqued according to specifications.