Automotive Flow Chart
Comprehensive Engine Performance Diagnostic Flowchart
A systematic troubleshooting guide for diagnosing complex engine performance issues, covering power loss, rough running conditions, and unusual engine noises
flowchart TD
A[Engine Performance Issues] --> B[Type of Issue]
B -->|Loss of Power| C[When Does It Occur?]
B -->|Rough Running| D[Check Running Condition]
B -->|Noise| E[Type of Noise]
C -->|All Times| C1[Check Compression]
C -->|Under Load| C2[Check Fuel Pressure]
C -->|High Speed| C3[Check Timing]
C1 -->|Low| C4[Leak Down Test]
C2 -->|Low| C5[Fuel System Test]
C3 -->|Off| C6[Timing Component Check]
D -->|Cold Only| D1[Check Cold Start System]
D -->|Hot Only| D2[Check Temp Sensor]
D -->|All Times| D3[Check Misfire Data]
D1 -->|Failed| D4[Replace Components]
D2 -->|Failed| D5[Replace Sensor]
D3 -->|Pattern| D6[Analyze Cylinder Data]
E -->|Knocking| E1[Check Rod Bearings]
E -->|Ticking| E2[Check Valvetrain]
E -->|Rattling| E3[Check Timing Components]
E1 -->|Worn| E4[Engine Teardown Required]
E2 -->|Loose| E5[Adjust Valves]
E3 -->|Loose| E6[Replace Chain/Belt]