it has a code reading po300 (misfire) but it doesn't say witch cyl.can you give me a direction where to start.thank you
Mar 25, 2014 at 1:57 PM
2007 Chevrolet Silverado code reading
2007 CHEVROLET SILVERADO
PATACAKE
- MEMBER
- 28 POSTS
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RASMATAZ
- ✓ASE Certified Mechanic
- 75,992 POSTS
Common Problems That Trigger the P0300
Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
Incorrect ignition timing
Vacuum leak(s)
Low or weak fuel pressure
Improperly functioning EGR system
Defective Mass Air Flow Sensor
Defective Crankshaft and/or Camshaft Sensor
Defective Throttle Position Sensor
Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems
Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
Incorrect ignition timing
Vacuum leak(s)
Low or weak fuel pressure
Improperly functioning EGR system
Defective Mass Air Flow Sensor
Defective Crankshaft and/or Camshaft Sensor
Defective Throttle Position Sensor
Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems
Mar 25, 2014 at 2:27 PM
HMAC300
- ✓ASE Certified Mechanic
- 48,601 POSTS
if it's a 4.8L it may be a bad cam andlifters.
Mar 25, 2014 at 3:28 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.