Engine - Knocking/Clattering/Ticking/Tapping Noises: Overview

Article No.
97-17-14

08/18/97

^ ENGINE - 2.5L - "KNOCKING," "CLATTERING,"
"TICKING," OR "TAPPING" NOISE - UPPER ENGINE
NOISE DIAGNOSTIC GUIDE - SERVICE TIP

^ NOISE - "KNOCKING," "CLATTERING," "TICKING,"
"TAPPING" FROM ENGINE - UPPER ENGINE NOISE
DIAGNOSTIC GUIDE - 2.5L ENGINE - SERVICE TIP

This TSB article is being republished in its entirety to change TS8 reference within article.

ISSUE:
Upper engine noises, such as "knocking," "ticking," "clattering," or "tapping" at various engine temperatures, can be heard on some vehicles. This may be caused by one of the following: 1) carbon knock, 2) camshaft friction spring noise, and/or 3) Hydraulic Lash Adjuster (HLA) noise.

ACTION:
Refer to the following 2.5L V6 Engine Noise Description and Diagnostic steps to pinpoint and resolve the source of the upper engine noise(s).

NOTE:
THIS TSB ARTICLE ADDRESSES ONLY THE ENGINE NOISES LISTED. FOR INFORMATION REGARDING OTHER ENGINE NOISES, REFER TO THE APPROPRIATE YEAR PROBE SERVICE MANUAL, SECTION 03-01B.

2.5L V6 ENGINE NOISE DESCRIPTION








Refer to Engine Noise Flowchart (Figure 1) for the following noise descriptions.





NOTE:
WHEN CONDUCTING ENGINE NOISE DIAGNOSTICS, ALWAYS CHECK THE ENGINE OIL AND COOLANT LEVELS PRIOR TO STARTING THE ENGINE. ALSO, OBSERVE THE COOLANT TEMPERATURE TO AVOID OVERHEATING THE ENGINE.

PART NUMBER PART NAME

D9AZ-19579-BA Carburetor Tune-up Cleaner

OTHER APPLICABLE ARTICLES: 97-17-13
SUPERSEDES: 97-14-12
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 497000, 499000, 702000, 702100