Probe L4-133 2.2L SOHC (1990)
Lifter / Lash Adjuster: Customer Interest
Engine - Tappets Noisy
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ENGINE - 2.2L - TAPPETS NOISY - VEHICLES BUILT BEFORE 3/19/90
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NOISE - TAPPET - 2.2L - VEHICLES BUILT BEFORE 3/19/90
Article No. 90-26-8
FORD:
1989-90 PROBE
ISSUE:
Noisy engine tappets may be caused by lack of lubrication. The tappet noise can usually be heard after driving at highway speeds and then
coming to an idle speed mode. Inadequate tappet lubrication may be due to rocker arm oil passage holes that are too small to allow enough oil
to pass through to the tappets. The size of the oil passage hole can be affected by...
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Overextended oil change intervals, beyond 7500 miles on non-turbo engines and 5000 miles on turbo engines
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Oil deterioration/sludge that restricts the oil passages to the rocker arm shafts, rocker arms and tappets (HLA).
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Rocker arm shaft(s) wear that decreases the amount of oil pressure to the hydraulic lappets (collapsed tappets).
ACTION:
Install twelve (12) new rocker arms with larger oil passage holes (increased from .047" to .078") that will improve the lubrication of the
tappets. Refer to the following procedure for service details.
1.
Confirm that the engine tappet noise exists.
2.
Check to see if the engine oil is contaminated.
a.
If it is contaminated, change the oil & filter.
b.
Check the engine again for tappet noise.
c.
If the noise is still present, proceed to Step # 3.
3.
Remove the rocker arm cover. Refer to the 1990 Probe Shop Manual, section 2-1-05 for cylinder head valve train inspection and repair
information.
4.
Check for oil sludging that could restrict the rocker arm shaft oil passages.
5.
Perform the necessary service operations to remove the oil sludge.
6.
Inspect the rocker arms and rocker arm shafts for wear, scratches or scoring.
7.
If signs of wear are found, replace the rocker arm shafts and rocker arms. Use the revised rocker arms listed below.
8.
If the rocker arms and shafts are not worn, and not oil sludged, replace the rocker arms/tappet assemblies.
NOTE: IF THE CYLINDER HEAD HAD BEEN REMOVED DURING A PREVIOUS REPAIR, MAKE SURE THE CORRECT HEAD GASKET
WAS INSTALLED. THERE IS A DIFFERENCE BETWEEN TURBO AND NON-TURBO HEAD GASKETS. REFER TO THE 1990
PROBE SHOP MANUAL, PAGE 21-05-18 FOR IDENTIFICATION INFORMATION.
PART 14UMBER
PART NAME
CLASS
F02Z-6564-A
Rockor Arm - Intake
B
F02Z-6564-8
Rocker Arm - Exhaust
B
E92Z-6563-A
Rocker Arm Shall - Intake
C
E92Z-6563-B
Rockor Arrn Shaft - Exhaust
C
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS:
Eligible Under Basic Warranty Coverage, Powertrain Warranty Coverage
OPERATION
DESCRIPTION
TIME
902608A
Install Rocker Arms And
2.0 Hr.
Rocker Shafts
DEALER CODING
BASIC PART NO. CONDITION CODE
6500
56
OASIS CODES:
401000, 497000, 702000