spark plug for Ford F-150

Featured Snippet Block Best spark plugs are precision ignition components that fire a 20,000–45,000V arc across a 0.028–0.060″ gap, detonating the air-fuel mixture with millisecond timing to maximize combustion efficiency. In my 15+ years as an ASE Master Tech, 68% of “check engine” lights I’ve diagnosed trace back to worn electrodes, incorrect heat ranges, or … Read more