Jaguar XK8 - How to Inspect & Clean the AJ27 Load Breathers

In this video, I perform the essential inspection and cleaning of the Part Load and Full Load breathers on the Jaguar XK8's AJ27 engine. This is a critical maintenance task that Jaguar highlighted in a TSB (Service Action S474 Technical Service Bulletin) to prevent rough idle, hard starting, and performance issues caused by clogged breathers or vacuum leaks from broken plastic hoses.

Join me in this step-by-step process to safely access, inspect, and clean both breathers without breaking the brittle, aging plastic connectors—a common and costly mistake on these older vehicles. This procedure is recommended by Jaguar every 10,000 miles (16,000 km) and is something every XK8 owner should know.

⏰ TIMESTAMPS / CHAPTERS ⏰
0:00 - Importance of the Service
0:31 - Jaguar's TSB & Service Intervals
1:00 - Warning: Plastic Connector & How to Lubricate
2:26 - Servicing the EASY ONE: Full Load Breather
3:01 - Removing the Full Load Breather Hose
4:08 - Inspecting the Full Load Breather
5:16 - Servicing the HARD ONE: Part Load Breather
6:40 - The Dangers of Breaking the Hose
9:05 - Using a Vise-Grip & Screwdriver for Stuck Connectors
11:26 - Inspecting the Part Load Breather
13:53 - How to CLEAN a Clogged Breather (Jaguar's Drill Bit Method)
15:27 - Reassembly & Final Thoughts

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🛠️ PRODUCTS & TOOLS MENTIONED 🛠️

► Chemical Guys V.R.P. Vinyl, Rubber and Plastic Protectant - https://amzn.to/47NXvdk (Amazon)

► Tesa 51036 Automotive Harnesses Tape - https://amzn.to/3K4JJK7 (Amazon)

► Small Vise-Grips

► 2.5mm Drill Bit (for cleaning, if clogged)


🔗 LINKS & RESOURCES 🔗

► Gary VanRemortel's XK8 Bible: https://drive.google.com/file/d/1jtAa...

Books:
► Jaguar XK8: The Complete Story - Hardcover 2009 - https://amzn.to/4p16NZd (Amazon)
► Jaguar XK8 & XKR (1996-2005): The Essential Buyer’s Guide - Paperback 2019 - https://amzn.to/47JRj4Q (Amazon)

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Thanks for watching, and best of luck with your project!


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