Here's why:
* Different engines have different requirements: The optimal spark plug gap varies based on factors like combustion chamber size, engine compression ratio, and ignition system.
* Nissan made many truck models in 1985: There could be a 2.4L, 3.0L, 4.0L, or even a diesel engine. Each of these will have different specifications.
To find the correct spark plug gap, follow these steps:
1. Locate your owner's manual: The manual will specify the correct gap for your specific engine.
2. Check the spark plugs themselves: Sometimes the recommended gap is stamped on the spark plug itself.
3. Consult a reliable repair manual: A repair manual for your specific year, make, and model will provide detailed information on spark plugs and their gap.
4. Visit a parts store: A local auto parts store will have a database with the correct information based on your vehicle's VIN (Vehicle Identification Number).
Remember: Using the wrong spark plug gap can lead to engine misfires, poor fuel economy, and damage to your ignition system. Always use the recommended gap for your engine.
