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 - Engine Controls
.
|
Ignition System Checks
|
• | Check for crossfire between spark plugs, such as the distributor
cap, spark plug wires, and proper routing of the plug wires. |
|
Engine Mechanical Checks
|
• | Check the engine for the following the items: |
- | Sticking or leaking valves |
• | Check the (EGR) operation for being open all the time. |
• | Check the intake and exhaust system for fresh air entering the
exhaust upstream of the catalytic converter or restrictions. |
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Fuel System Checks
|
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Additional Checks
|
• | Check the EGR gasket for a faulty or loose fit. |
• | Check the (AIR) system for proper operation, if applicable. |
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