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Valve: Customer Interest
Engine - Runs Rough/MIL ON/Misfire DTC's/Low Power

NO: 21-21

DATE: 8-15-2005

MODEL/CHASSIS: See Table Below

M.YEAR: 2004

SUBJECT: 
Engine may have a rough idle, DTC ECM misfire codes, rough running or lack of power.

REFERENCE: 
VADIS/VIDA

This tech note supersedes the previous 21-21 dated 7-29-05. Please update your files. Update to LABOR OPS - correction is shown with bold text.

Affected Vehicles Table

DESCRIPTION:

The Customer may have a complaint of a rough idle, rough running, lack of power or the MIL on.

SERVICE:

^

Read out DTC's

^

Check compression and do a leak down test with the engine cold.

^

Check valve clearance on the cylinders with low compression.

^

Remove the cylinder head and check the condition of the valve face.

^

If the valve face is worn, replace ALL the intake valves, even if some look okay.

^

Use ONLY intake valves with P/N 30637059.

Engine, Cooling and Exhaust > Engine > Cylinder Head Assembly > Valve, Intake/Exhaust > Component Information > Technical Service Bulletins > Customer Interest for Valve: > TNN21-21 > Aug > 05 > Engine - Runs Rough/MIL ON/Misfire DTC's/Low Power

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