P0316 — Engine Misfire Detected on Startup (First 1000 Revolutions)

P0316 means the engine misfired during the first ~1000 revolutions after starting. Common on certain Ford 5.4L and 6.8L engines, often pointing to fuel pump, injector, or coil issues.

Cost range: $50–$1,500. Severity: high. Safe to drive? Investigate immediately — cold-start misfires often precede major component failure.

Most common causes of P0316

1. Weak fuel pump — Low cold-start pressure causes startup misfire. ($300–$800)
2. Failing ignition coil — Common on Ford modular engines. ($50–$300)
3. Leaky fuel injector — Floods cylinders during shutdown. ($200–$600)
4. Spark plug wear — Worn plugs misfire when cold. ($30–$150)

Symptoms drivers report with P0316

• Rough cold start
• CEL within first minute