Match each failure term to the correct description.

Prompts:
1. Can cause failure of the spark plugs
2. Can cause engine damage or scoring on the cylinder wall
3. Creates vacuum leaks, causing poor engine performance
4. Causes poor engine performance

Answers:
A. Rich/lean fuel
B. Crankshaft seal failure
C. Reed valve failure
D. Piston/bearing failure

Select match:

1. __________
2. __________
3. __________
4. __________