Head Gasket Tester Kit, Instant Accurate Detection, Safe on Material,3.3oz

No more headaches from engine troubleshooting! Quickly pinpoint cylinder head gasket issues for targeted repairs!

Our cylinder head gasket tester kit is a fast, non-destructive, and accurate troubleshooting tool that accurately determines if a cylinder head gasket is leaking by detecting the presence of combustion gases in the cooling system.

How to Use

1. Ensure the engine is completely cooled. Remove the radiator cap.

2. Insert the tester into the included plastic test sleeve until the marked position.

3. Insert the open end of the tester into the radiator opening. Squeeze the air bladder on the tester firmly to draw steam from the radiator opening. Observe the reaction between the liquid and steam in the tester.

4. With the engine idling, repeatedly squeeze and release the air bladder to draw in steam for approximately 1-2 minutes.

5. No color change: No combustion gases detected in the coolant, indicating the cylinder head gasket is normal. Color change: Combustion gases are present in the coolant, indicating a cylinder head gasket leak.

6. After testing, thoroughly rinse the tester with clean water and allow it to air dry before use.

Precautions

1. Please operate only after the engine has completely cooled down to ensure safety!

2. Before testing, please ensure that the engine oil and coolant levels are normal.

3. Please store in a cool, dry place, away from direct sunlight.

Everything You Need to Know About This Head Gasket Tester Kit

Q1: What exactly does this head gasket tester do?

A: It tells you whether your engine's cylinder head gasket has failed — without taking apart a single bolt. Just add the testing liquid to your coolant, run the engine for 60 seconds, and watch for a color change.

Q2: What color change should I look for?

A: It depends on your engine type:

Gasoline engine: Blue liquid will quickly turn yellow if CO₂ (combustion gases) is detected

Diesel engine: Liquid typically turns green if a leak is present

No color change means your head gasket is sealing properly.

Q3: When should I use this kit?

A: Use it when your car shows these warning signs:

Overheating or constantly losing coolant

White smoke from the exhaust with a sweet smell

Milky oil on the dipstick

Rough idle or mysterious misfires

Before you pay a shop thousands to tear down your engine, spend 60 seconds to know for sure.

Q4: How do I use it? Is it complicated?

A: Not at all. Follow these three simple steps:

Warm up the engine to normal operating temperature, then turn it off

Pour the testing liquid into the transparent detector tube

Place the tube into the radiator neck or coolant reservoir, start the engine, and rev it a few times

Within 30 to 60 seconds, look for the color change.

Q5: How accurate is this test?

A: Very accurate. The testing liquid uses a highly sensitive reagent that reacts immediately to CO₂ from combustion chamber gases. Even a tiny leak will cause a visible color change within one minute.

Q6: Will this test damage my engine?

A: No. This is a non-destructive test — no disassembly required. The testing liquid is safe for your cooling system, including the radiator, rubber hoses, and temperature sensor.

Q7: What vehicles does this kit work with?

A: It works with most cars, SUVs, trucks, motorcycles, and even heavy equipment. The kit comes with a universal adapter that fits nearly all radiator necks and coolant reservoirs.

Q8: How much is in a bottle?

A: Each bottle contains 3.3 oz of testing liquid — enough for multiple tests.