Chart 20
WARNING: This page is about a different variant/trim than selected.
- Engine Noise (under hood)
NOTE:
Attempt to identify the source of the noise. If the noise is from a source other than those listed below, refer to NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT SYMPTOM CHART INDEX (for noise such as spark knock) or the applicable Service Information to continue diagnosis.
| SYSTEM/COMPONENT | REFERENCE (Engine Controls Pinpoint Test unless noted) |
|---|---|
| Secondary Ignition System | CHECK for a snap noise that may be due to secondary ignition arcing. CHECK the condition of the spark plug boots. |
| Turbocharger System | REFER to the Fuel Charging And Controls - Turbocharger article to diagnose the turbocharger noise. |