code po303 misfire on cylinder 3. whats going on with this. truck hesitating,missing, sounds rattling going on underneath. thank you for your help
Jan 2, 2012 at 9:50 AM
Advertisement
HMAC300
✓Experienced Mechanic
48,601 POSTS
check the furel pressure. should be 35-50 unless a cng model or diesel
Jan 2, 2012 at 10:37 AM
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.