Car Overheating? How to Test for a Blown Head Gasket – 6 DIY Tests Anyone Can Do

Is your car overheating and you’re worried about a blown head gasket? In this video, I’ll show you 6 simple DIY tests you can do at home to check if your head gasket is failing — no special tools or experience required!

A blown head gasket can cause major issues like white smoke from the exhaust, coolant loss, oil contamination, rough idling, and constant overheating. Before spending thousands on repairs, watch this guide and learn the actual step-by-step tests that mechanics use to confirm if your head gasket is blown.

We’ll cover:
✅ Checking for white smoke & coolant in exhaust
✅ Inspecting oil for coolant contamination
✅ Coolant bubbling test
✅ Compression & leak-down basics
✅ Radiator cap & pressure test
✅ Temperature and overheating signs

Whether you’re a DIY car repair beginner or an experienced enthusiast, this video gives you clear, easy-to-follow head gasket testing methods. Save time, save money, and know for sure what’s wrong with your engine!

If you’re searching for car overheating fixes, head gasket failure symptoms, or DIY head gasket tests, this video is for you.


🛠️ What You’ll Learn in This Video:
0:00 - Intro
0:21 - What is a head gasket? (Simple explanation)
1:19 - How to check for blown head gasket symptoms
1:33 - Coolant bubbling test (free method)
2:27 - Oil cap inspection for chocolate milk/yogurt
3:06 - White smoke from exhaust explained
3:35 - Using a block tester to detect exhaust gases
4:25 - How a compression tester works
5:35 - Inspecting pistons with a borescope camera

✅ Symptoms of a Blown Head Gasket:

Bubbling in coolant reservoir or radiator

Milky oil (chocolate milk/yogurt texture)

White smoke from tailpipe

Overheating engine

Low compression in one or more cylinders

📦 Recommended Tools:

Block Tester Kit

Compression Tester

Borescope Inspection Camera
(Links in comments or description if available)

👍 If this video helped you, LIKE, COMMENT, and SUBSCRIBE for more DIY car repair videos from Doc Car Garage!

🔔 Don’t forget to hit the bell so you never miss a fix!

#BlownHeadGasket #HeadGasketSymptoms #DIYCarRepair #EngineTroubleshooting #CoolantLeak #CompressionTest #CarOverheating #BlockTester #DocCarGarage

Let me know if you want me to tailor it more toward a specific car model, audience, or tool.



blown head gasket symptoms, how to diagnose head gasket failure, head gasket problems signs, car overheating issues, engine coolant leaks, smoke from exhaust troubleshooting, engine performance drop indicators, check head gasket health, identifying blown head gasket, head gasket repair basics

Head Gasket Troubles? 6 Easy Tests You Can Do at Home! - 6 Clear Symptoms!

car overheating, blown head gasket, blown head gasket symptoms, blown head gasket test, DIY head gasket test, head gasket failure, car overheating fix, overheating engine diagnosis, head gasket repair, head gasket DIY, how to test a blown head gasket, signs of a blown head gasket, overheating car symptoms, coolant loss head gasket, car repair DIY