Hey, for this price it's pretty good!
Not top quality but also a fraction of the cost of top quality.
Used it on a snowblower that I suspected had a leak but it didn't.
So as far as that goes it works very well.
Case plastic is a bit on the cheap side but at least it has a case.
I'd say it's well worth the cost.
If I run into problems with it down the road I'll update this comment but so far so good!
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This item: Cylinder Leak Down Tester Kit,Automotive Engine Pressure Gauges Compression Test Leakage Detector Tool Set (TU-21)
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Product Description
Cylinder Leak Down Tester Compression Test Kit
- This is a high quality TU-21 cylinder leak detector, including double gauge system
- Designed to detect a variety of engine faults, including worn piston rings, worn valves, cracked cylinder walls, and blown head gaskets
- Easily check the amount of leakage and locate leaks area in an engine cylinder to help determine the sourcer
- Suitable for use on any petrol engine with 12 or 14mm spark plugs, and ideal for testing trucks & late model cars where clearance is minimal
- Pressure gauge with dual scale reads from 0 to 100 PSI and 0 to 7 Bar, shows pressure in PSI and Bar and percentage of cylinder leakage
- 1x Dual Gauges Assembly with 19" Hose and American Style Air Plug
- 1x 10" Rubber Nylon Resin Hose with 14mm Brass Coated Aluminum Adapter
- 1x 10mm Aluminum Adapter with O-ring
- 1x 12mm Aluminum Adapter with O-ring
- 1x Detailed Instruction
- 1x Customized Blow Molding Case, 13-1/2"L x 9-1/2"W x 3-1/4"H
ADAPTERS
Connect to the corresponding sizes spark plugs on most gasoline engine
- 14mm Brass Coated Aluminum Adapter
- 14mm Brass Coated Aluminum Adapter and 12mm Aluminum Adapter
- 14mm Brass Coated Aluminum Adapter and 10mm Aluminum Adapte
PRESSURE REGULATING VALVE
- Pull out to use
- Push back to lock
- Clockwise twist to increase air supply
- Anticlockwise twist to reduce air supply
- Turn regulator knob fully anticlockwise before connecting to compressed air
DUAL GAUGES ASSEMBLY WITH HOSE
Available with either single gauge shows % of cylinder leakage, or twin gauge manifold show cylinder leakage and cylinder pressure
- American Style Air Plug
- Air Regulator Valve
- Manifold Body
- Cylinder Pressure Gauge, 0-100psi/0-7bar
- Cylinder Leakage Gauge, Marked HIGH MODERATE LOW SET
- 19" Rubber Nylon Resin Hose
- Brass Quick Coupler
Assist To Detect Following Enging Faults
Worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets.
Location Of Detect Foints
- Oil dipstick tube — for leakage from damaged or worn rings and/or cylinder wall.
- Radiator filler — for cylinder wall cracks or head gasket leakage.
- Adiacent cylinder — for head gasket leakage.
- Carburettor air inlet — for inlet valve leakage.
- Fuel injection throttle body — for inlet valve leakage.
- Tail pipe — for exhaust valve leakage.
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Purchase at your own risk
Manifold hose had a restriction check valve fitting installed rendering the assembly useless for its intended purpose as even without the quick connect attached to the hose it reads 0 leakage. Clearly from the other review photos this is not always the case, so just buyer beware.
Top reviews from Canada
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- Reviewed in Canada on January 16, 2025Verified Purchase
- Reviewed in Canada on March 13, 2023Verified Purchase
I was initially skeptical because I had a hard time zeroing the gauge reliably, but once I realized that I could put a blow gun on the end of the hose attached to the gauge cluster, and evacuate the air - I was able to nail down the calibration and zero the gauge reliably. I wanted to mention this trick because it might help someone else.
I am grateful that I was able to buy this somewhat specialized tool for such a fair price. I am a guy who works on engines in my garage, and I'm very glad I don't have to spend hundreds of dollars on tools like this. I won't use it very often, but when you need it you need it, and it does the job.
I am also grateful that it comes with the case. The case is sturdy and everything fits well. The compression gauge I bought (a few years ago) didn't come with a case and it's a pain to protect the gauge in storage and keep the adaptors organized.
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- Reviewed in Canada on November 5, 2024Verified Purchase
Top reviews from other countries
- JMackReviewed in the United States on January 27, 2025
Gauges not dependable but you can do a leak down test
Verified Purchase - JosueReviewed in the United States on May 20, 2025
Es todo lo que esperaba
Verified Purchase - Wells TurnageReviewed in the United States on September 22, 2024
Guages installed reversed
Verified Purchase - 鶹 CustomerReviewed in the United States on July 13, 2023
The instructions are wrong
Verified Purchase - MattReviewed in the United States on August 3, 2023
Worked perfectly but the supplied hose leaks at the fitting luckily my compression tester hose fit
Verified Purchase
