NHTSA ID Number: 10252294
Manufacturer Communication Number: IK1201490
TSB/Document Date: 2024-04-01
Summary
Inspection of camshaft for PSI 8.8L Propane and Gasoline Engines
Countries: CANADA, MEXICO, UNITED STATES Document ID: 1K1201490
a Availability ISIS, Bus ISIS, FleetISIS, NotSIR Revision: 0
I Major System: ENGINE Created: 2/28/2024
Current Language: English Last Modified: 3/6/2024
Knowledge Base Other Languages: NONE ‘Author: Gintarus Andriusis
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Title: PSI 8.8L Camshaft Inspection and Repair vs Engine Replacement
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Applies To:PSI 8.8L LPG and Gasoline Engines
Change Log
Please refer to the change log text box below for recent changes to this article:
r
(03/11/2024 - Initial Article Release.
Description
The purpose of this article is to provide updated guidance regarding PSI 8.8L engine repair versus engine replacement. When a camshaft or
lifter(s) have failed, technicians should pursue the engine repair process, following the inspection guidelines below, instead of engine
replacement.
***NOTE*** This article is only to be followed if there is suspicion of internal engine damage.
Symptoms
Diagnostic Trouble Codes & Dashboard Indicator Lights:
DTC/Light
1322-31 pandom/Multple Cylinder Misfire
1323 - 31 Cylinder 1 Misfire Detected
1324 - 31 Cylinder 2 Misfire Detected
1325 - 31 Cylinder 3 Misfire Detected
1326 - 31 Cylinder 4 Misfire Detected
1327 - 31 Cylinder 5 Misfire Detected
1328 - 31 Cylinder 6 Misfire Detected
1329 - 31 Cylinder 7 Misfire Detected
1330 - 31 Cylinder 8 Misfire Detected
Customer Observations or Concerns:
© Low power complaints
© Rough running
© Misfire condition
¢ Abnormal engine noises
© No start condition/engine lock-up
Special Tools / Software
Tool Description Tool Number Comments Instructions
Not Applicable
Service Parts Information
Kit Description Part Number eauivea Notes
Hydraulic Valve Lifter Ps180000145 16
Camshaft 2516875C1 / 80000923 1
Oil Filter and Oil
Replace any other damaged or one- example: bent push rods,
time-use components gaskets used for reassembly
Diagnostic Steps
Step
Action
Decision
DIAGNOSTIC:
Identify if there is potential for internal engine
damage with possible conditions of:
Misfires, Rough Running, Knocking/Abnormal
Yes: Go to Step 2
YES/NO QUESTION?
Does the engine crank and/or start with the key in
the crank position?
1 | engine Noises, No Start/Engine Lock-Up
No: Follow available PSI diagnostics to determine
YES/NO QUESTION? the root cause of the condition present
Is there suspicion of internal engine damage and
have other engine performance-based diagnostics
been completed?
Step] Action Decision
DIAGNOSTIC: Yes: Go to Step 4
Verify if the engine can be rotated by the starter
2
No: Go to Step 3
Step
Action
Decision
DIAGNOSTIC:
Verify if the engine can be rotated by hand
Yes: Follow diagnostics for the no-crank condition
in the PSI diagnostics manual
3
YES/NO QUESTION? No: Go to Step 6
Can the engine be rotated manually?
Step] Action Decision
DIAGNOSTIC: Yes: Go to Step 6
Perform and record values for Cylinder
Compression test following PSI 8.8L engine
4 |/manual
YES/NO QUESTION? No: Go to Step 5
Is the Engine Compression Test within
specification?
Step] Action Decision
DIAGNOSTIC: Yes: Go to Step 6
Perform and record values for the Cylinder
Leakdown Test following the PSI 8.8L engine
5 manual 8 8 No: Open a Technical Support casefile and provide
the recorded values from the compression test
YES/NO QUESTION? and leak-down test
Is the Leakdown Test within specification?
Step] Action Decision
DIAGNOSTIC: Yes: Go to Step 7
Remove the Intake, Valve Cover, and Valley pan to
verify the condition of the camshaft and valvetrain . . ae
6 No: Return engine to operating condition and
YES/NO QUESTION? follow appropriate PSI diagnostics to determine to
cause of abnormal engine operation
Is there any damage observed to the camshaft,
valvetrain, push rods, or lifters?
Step] Action Decision
DIAGNOSTIC: Yes: Go to Step 8
z [Remove the oll pan to inspect for any metal
YES/NO QUESTION?
Is any metal debris found in the oil pan?
No: Go to Step 9
Step] Action
Decision
DIAGNOSTIC:
Remove the front and second to last main
bearings for inspection of any metal passing
through
***NOTE*** - Do not remove the most rear
bearing as this may result in an oil leak later in life
YES/NO QUESTION?
Using Figures 1 and 2 below, do the bearing(s) and
crankshaft show any signs of damage/scoring?
'Yes: Open a Technical Support casefile and
provide pictures
No: Go to Step 9
Figure 1
Bearing contamination
Scoring on crankshaft journal
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TSB/Document ID: IK1201490
Replacement Service Bulletin Number:
MFR Communication Date: 2024-03-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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