Checks
| Action
|
DEFINITION: The fuel
ignites in the intake manifold, or in the exhaust system, making a loud popping
noise.
|
Preliminary Check
| Refer to
Symptoms
.
|
Ignition System Checks
|
| • | Check for crossfire between the spark plugs in the distributor
cap, the spark plug wires, and for proper routing of the plug wires. |
|
Engine Mechanical Checks
|
| • | Check the engine for the following the items: |
| - | An improper valve timing |
| - | Any sticking or leaking valves |
| • | Check the intake and exhaust system for fresh air entering the
exhaust upstream of the catalytic converter or any restrictions. |
|
Fuel System Checks
|
|
Additional Checks
|
| • | Check the EGR gasket for damage or a loose fit. |
| • | Check the secondary air injection (AIR) system for proper operation,
if applicable. |
|
