Odyssey Leaking AC Service Ports Replace Schrader Valves WITHOUT Losing Freon!

In this video, I fix a leaking A/C service port on my 2011 Honda Odyssey Touring Elite by replacing the Schrader valve cores without evacuating or discharging the A/C system. The A/C had cut out during a road trip, and I already knew both service ports had been slowly leaking refrigerant for a while. I’ll show how to leak check the high-side and low-side A/C service ports, how the no-discharge valve core removal tools work, and how to replace the R134a Schrader valve cores while keeping the refrigerant in the system. These tools can save a lot of time compared to recovering the refrigerant, evacuating the system, and recharging from scratch. After replacing both A/C service port valve cores, I hook up the gauges and check static pressure. The system has enough pressure to run, but the compressor still does not engage—so this simple A/C leak repair turns into a separate compressor diagnosis. 🔥 Common symptoms covered: • A/C leaking from service ports • Low refrigerant from slow leak • A/C needs Freon every year • Hissing when removing service port caps • Bubbles at Schrader valves • A/C compressor not engaging after leak repair 🔧 Tools & Parts Used: 🔹Valve Core Quick Remover Installer - https://amzn.to/4evapRi 🔹Sherlock Gas and Air Regular Leak Detector - https://amzn.to/3QUHRXy 🔹Brass High & Low Pressure Service Port Caps - https://amzn.to/4uuav04 🔹Plastic High & Low Pressure Service Port Caps - https://amzn.to/48HfTEK 🔹A/C Manifold Gauge Set - https://amzn.to/3ZzUIQC 🔹A/C Manifold Gauge Set - https://amzn.to/4tmlJCX 🔹R134a Refrigerant (Big R / Rural King / Walmart) 🔹T-Shirt - I’ll Be in The Garage - https://amzn.to/4hmZSa6 📌 Chapters 00:00 - Road Trip A/C Failure & Known Service Port Leak 00:15 - Finding Leaking A/C Service Ports 01:18 - Checking Schrader Valves for Bubbles & Hissing 03:00 - How A/C Schrader Valve Cores Work 03:46 - No-Discharge Valve Core Replacement Tool Explained 04:46 - Replacing the Low-Side A/C Schrader Valve 10:30 - Low-Side Valve Core Replaced Without Evacuating 11:28 - Replacing the High-Side A/C Schrader Valve 15:24 - Leak Checking the New Valve Cores 17:57 - Hooking Up Gauges After the Repair 18:14 - Static Pressure Check 18:21 - Compressor Still Not Engaging 18:37 - Next Diagnosis Begins 🚗 Compatibility This applies to many vehicles with leaking A/C service ports, especially Honda and Acura models using R134a systems. 📸 My Gear & Tools: 🎥 GoPro 11 Black - https://amzn.to/45AcxAT 🎬 Edited in Wondershare Filmora 14 - bit.ly/MattMechanicFilmora 🎛️ Controller: TourBox Elite Plus - https://amzn.to/4l5l6JJ 🖼️ Thumbnails: GIMP + TourBox 🚗 Related Videos: ❄️How to Recharge Your R134A AC System with Manifold Gauges - 2011-2017 Honda Odyssey -    • How to Recharge Your R134A AC System with ...   ❄️Honda Odyssey AC Not Cold at Idle? Clean Your Radiator & Condenser | DIY Fix (2011–2017) -    • Honda Odyssey AC Not Cold at Idle? Clean Y...   🧭Vehicle Pre-Road Trip Inspection | Fluids, Brakes, Suspension & More! -    • Vehicle Pre-Road Trip Inspection | Fluids,...   ⚙️Honda Odyssey Transmission Clunk – What I Learned After Tearing It Apart -    • Honda Odyssey Transmission Clunk – What I ...   📂Honda Odyssey (2011–2017 4th Gen) | DIY, Repairs & Maintenance -    • Honda Odyssey (2011–2017 4th Gen) | DIY, R...   📂A/C Repair Videos | DIY, Repairs & Maintenance -    • A/C Repair Videos | DIY, Repairs & Mainten...   📜 Affiliate Disclosure: As an Amazon Associate I earn from qualifying purchases. I also participate in other affiliate programs, including Tire Rack and Wondershare. This means I may earn a small commission if you buy through my links — at no extra cost to you. Thank you for supporting the channel! 🙏 👍 Like & Subscribe for more DIY auto repairs, accessories, and tool reviews. 📅 New videos every Saturday @ 11AM CST ☕ Support the channel:   / mattmechanic   Disclaimer: I am a licensed Airframe & Powerplant (A&P) mechanic ✈️, but I am not a licensed automotive technician🚗. The content in this video is for educational and entertainment purposes only. Always consult a certified mechanic or your vehicle’s service manual before attempting any repairs or modifications. You are responsible for your own tools, safety, and decisions. Use this content at your own risk.