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2026. 6. 30. 작업
Can I use lower octane fuel at high elevation?
You have nothing to lose on a modern engine (except power) Any engine with a knock sensor and computer-controlled ignition timing (e.g. modern fuel-injected designs) should be able to alter ignition timing to minimize the risk of detonation. When ignition timing is pulled, you should be able to feel loss of engine grunt . Here's how the sequence of events would roughly unfold in the event of a significant detonation event: Detonation, characterized by untoward vibrations, are picked up by the knock sensor(s). The knock sensor readings are constantly being monitored by the engine computer, which may decided to intervene and retard ("pull") the ignition timing. Retarding ignition timing reduces detonation risk because it lowers the compression ratio of the engine, which lowers the effective pressure of the intake mixture: ▼ effective pressure → ▼ chances of detonation The loss in engine power is the result of two effects: Engine thermodynamics ▼ CR → ▼ effective pressure → ▼ torque → ▼ p
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2003 Hyundai Santa Fe will start then die. Then it will not start. After pumping the accelerator or holding on the floor and returning later it will start. Nothing codes out. This happens probably 15% of the time. Any ideas?
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A friend has an older Miata that was improperly stored for at least three years. Most of the time, it was not garaged. The gas is old, the battery is dead, it has not been started. It was probably parked without an oil change. He is looking to do the minimum to get this sellable, so the primary concern is the initial startup and the brakes. What would be recommended , especially regarding that first engine startup?
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I am planning to start using seafoam in my gas and oil ,how often should you a add it an how much.The label isn’t to clear about it.
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I’ve asked a few mechanics and DIYers this question and so far no consensus. Let’s say you’re 1000 miles away from next SCHEDULED oil change, and you’re about to leave on a 2000 mile road trip. Would you choose to change your oil 1000 miles early before the trip, or 1000 miles late after the trip?