Fix guides
One step at a time
Plain-English jobs for driveway mechanics — tools, safety, what to look for, and when to stop. No spaghetti wiring map required. No car saved yet — these guides still work.
easy · 30–90 min
Engine misfire — find it without guessing
Use this when the engine shakes, a cylinder misfire code (like P0302) shows up, or you smell raw fuel.
Tools
- • Code reader (or TorqMind notes from your scanner)
- • Spark-plug socket + ratchet
- • Dielectric grease
- • Flashlight
Safety
- • Engine can be hot — let it cool if you need to pull plugs.
- • Keep hair and sleeves away from belts if the engine is running for a listen test.
- • Don’t spray flammables into a running intake.
Step 1 of 5
Read the code and write it down
Note the exact code (example: P0302 = cylinder 2). Also note if it’s random (P0300) or one cylinder.
What “good” looks like: One cylinder vs random — that decides coil vs fuel vs mechanical next.
Stop if…
- • You hear rod knock or see metal in the oil — stop and get a professional opinion.
- • Coolant is disappearing with no external leak — don’t keep driving it hot.