Cylinder misfires can turn a smooth commute into a rough, fuel‑wasting slog, and they almost always leave a trail of diagnostic clues if you know where to look. I focus on four of the most common ...

Question:I've already done a lot of work to a 2000 3.3-liter Nissan Frontier Crew Cab. It runs bad and has two codes, P0300 and P0400. I spoke to a mechanic who thought I should change the ...