Engine Misfire Detected on Startup (First 1000 Revolutions)
The P0316 code means the vehicle's onboard diagnostic system has detected: Engine Misfire Detected on Startup (First 1000 Revolutions). This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $100 - $1,800+ (parts and labor) -- a plug or coil fix is often under $300, but causes this page lists, such as leaking fuel injectors or a weak fuel pump, can run $1,300-$1,800, and underlying mechanical damage (head gasket, burned valve, low compression) costs more still
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Read and clear misfire codes. Shows which cylinder is misfiring so you know exactly what to replace.
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Common Symptoms
- Engine misfires during cold start
- Rough idle for first 30-60 seconds after starting
- Check Engine Light illuminated
- Engine stumbles or almost stalls on startup
- Misfire clears after engine warms up
Probable Causes (Ranked by Likelihood)
- Worn or fouled spark plugs Very High
- Leaking fuel injectors allowing fuel to pool overnight High
- Weak ignition coil that fails when cold High
- Low fuel pressure on initial startup Moderate
- Worn valve seals allowing oil to foul spark plugs overnight Moderate
Step-by-Step Diagnostic Procedure
-
Check for companion misfire codes (P0301-P0312) that identify which cylinder misfires on startup
-
Remove and inspect spark plugs -- look for oil fouling, carbon deposits, or worn electrodes
-
Perform a fuel pressure leak-down test -- pressure should hold for at least 10 minutes after shutdown
-
Test ignition coils for resistance when cold and again when warm to check for intermittent failure
-
If spark plugs show oil fouling, inspect valve stem seals for leakage
Common Fixes by Vehicle
What techs usually find when diagnosing P0316 on specific vehicles — tap your vehicle for the fix and the exact part:
2004-2010 Ford F-150/Expedition 5.4L 3V hard DIY
P0316 on 6.0L and 5.4L 3V Fords is the classic cold-start misfire -- failed cam phasers ticking for the first few seconds. Ford TSB 10-11-2 covers phaser replacement with revised design. Use only 5W-20 Motorcraft synthetic blend and change oil every 5K.
Labor: 8-10 hours2006-2013 VW/Audi 2.0L TSI/TFSI moderate DIY
VW TSI/TFSI engines set P0316 from carbon-clogged injectors or a weak high-pressure fuel pump follower. Pull the HPFP and inspect the roller follower -- if scored, replace it and the pump cam follower bucket (INA 06D 109 309 C).
Labor: 2 hours2011-2019 Ford F-150/Edge 3.5L EcoBoost hard DIY
On Ford 3.5L EcoBoost, cold-start P0316 is typically carbon-fouled intake valves. Walnut blasting the intake ports at 60-80K miles is the fix. After cleaning, add a quality PEA-based fuel system treatment every other tank (Techron or Gumout Regane).
Labor: 4-6 hoursFrequently Asked Questions
Can I drive with code P0316?
Yes, you can drive short distances. The misfire typically clears after the engine warms up. However, repeated cold-start misfires can damage the catalytic converter over time.
Why does my engine only misfire on startup?
Cold-start misfires often occur because spark plugs are fouled with oil or fuel that leaked past injectors overnight. The engine requires richer fuel and stronger spark when cold, so marginal components fail under these conditions.
Is P0316 mainly a Ford code?
While P0316 is a generic OBD-II code, Ford vehicles are the most common to set this code. Ford PCMs are particularly vigilant about monitoring misfires during the first 1000 crankshaft revolutions.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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