Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJAGUAR1991XJ-6 L6-4.0LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSCUSTOMER INTERESTINSTALL VALVE GUIDE SEALS
1991 Jaguar XJ-6 L6-4.0L
Install Valve Guide Seals
1991 Jaguar XJ-6 L6-4.0LSECTION Install Valve Guide Seals
12-43
MODEL: 88-92 MY Sedans
DATE: 4/93
Cylinder Head Rebuild - Install Valve Guide Seals
ISSUE:
AJ6 engines from engine number 163522 incorporate exhaust valve guide seals.
ACTION:
Whenever an AJ6 cylinder head (up to engine number 163522) is disassembled for service, perform the following:
^ Install valve guide seals to all of the exhaust valves.
^ Install new inlet guide seals.
PARTS INFORMATION:
Part Number Description
JLM 11088 Cylinder Head Gasket Kit
(includes 24 valve guide seals)
MODEL: 88-92 MY Sedans
DATE: 4/93
Cylinder Head Rebuild - Install Valve Guide Seals
ISSUE:
AJ6 engines from engine number 163522 incorporate exhaust valve guide seals.
ACTION:
Whenever an AJ6 cylinder head (up to engine number 163522) is disassembled for service, perform the following:
^ Install valve guide seals to all of the exhaust valves.
^ Install new inlet guide seals.
PARTS INFORMATION:
Part Number Description
JLM 11088 Cylinder Head Gasket Kit
(includes 24 valve guide seals)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.