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JIFETOR 9PCS PROFESSIONAL GAS GASOLINE ENGINE CYLINDER COMPRESSION TESTER KIT
Why Choose JIFETOR Engine Compression Test Kit?
JIFETOR professional automotive compression tester is designed for a rapid pressure measurement with accurate judgement. Big dual scale gauge tells exact reading changes to help diagnose possible problems. A must have tool that should belong to you and your garage.
PACKING LIST
1x Pressure Gauge
1x Straight Spark Plug Connector
1x Angled Spark Plug Connector
1x 16" Extension Hose with 14MM Connector
1x 7-1/2" Aluminum Extension Rod
1x 10mm Adapter with O-ring
1x 12mm Adapter with O-ring
1x 14mm Adapter with O-ring
1x 18mm Adapter with O-ring
1x Detailed Instruction
1x Customized Blow Molding Case 10-3/4"L x 7-3/4"W x 2"H
EASY TO TEST ENGINE COMPRESSION
- 1.Before the compression test, run the engine till it reaches normal temperature and stop the engine.
- 2.Disconnect all the spark plug wires, clean the dirt around and remove the spark plugs. Remove the air filter and fully open the throttle. Disconnect the ignition system.
- 3.Tightly insert aluminium rod rubber cone adapter into the tested cylinder's spark plug well. Or you can test the cylinder pressure by screwing the right size dedicated adapter, hand tighten only, do not by a wrench.
- 4.Observe the gauge and record after the pointer stabilizes. Press the release valve to zero position. Repeat the test, do it at least twice for each cylinder and take the average of the values.
Assist to diagnose following problems:
- Valve sticking
- Carbon build-up
- Cracked cylinder head or defective main gasket
- Poorly seated or worn piston rings
- Burned or damaged piston
USAGE AND FUNCTION
JIFETOR engine cylinder compression measuring meter tool set is perfect for checking compression pressure on most gasoline/gas/fuel engine cylinder, but not suitable for most diesel engine because of the low pressure range 0-300PSI.
ATTENTION
A variation in compression readings between cylinders is often a better indication of engine problems than the absolute values of compression.
Joseph Russick
2025-08-01 17:42:04
Should be able to handle any compression test with all the adapters
William B. Thomas
2025-07-01 18:36:52
I was worried these made in china compression testers all had all the variety of issues other reviewers of this model (and seemingly identical other models with lower reviews) noted. The first time I checked compression on my Volvo T5 2005 V50 to the Loaner unit from an autoparts store, with a cold engine, got 70-95-95-95-70. Hmmm, not good but engine is cold, and I must return the loaner. So I order this Jiffetor compression tester that also include a rigid 6inch metal threaded tube fitting. You have probably noticed most other kits do not have the long threaded adapter, it was $2-$3 more than sim kits. I was concerned the black rubber tube adapter was loosey goosey or gonna break when twisted. This time I warm up the engine as suggested, readings are 100-x-115-x-82 (was after the squirts of oil into the plug hole). I concluded, the cold engine and warm engine gave similar psi, the professional loaner kit and Jiffetor gave similar psi. The squirts of oil did raise compression a little, to be expected in older engines. Image shows the Jiffetor pressure gauge adapted to air compressor outlet, and all 3 read the same.
Remodeling in SoCal
2025-06-30 14:42:33
It has the metal extension tube which on deep recess spark plug openings is very useful. The other kits do not. Good written information given with kit and support info too. Excellent for compression test and finding blown head gaskets.
Brian C.
2025-05-15 11:22:09
The 10mm brass adapter was not long enough to achieve secure thread engagement (3 turns) before fully compressing the o-ring seal.
Max
2025-05-01 13:43:44
Works as described
Hank Bernstein
2025-04-29 16:09:38
Complete with necessary attachments and perfect for the hobbiest and shade tree mechanic
owen kessler
2025-04-26 20:18:11
the kit itself is well built, the components all look well. it just wouldn't screw into the engine, if it had worked I would have given it a five.
AshMan
2025-04-10 14:42:55
I have a classic car. this is a must have to determine the overall health of the engine and see if there is anything that is causing problems with the car running. If you have low compression, your car wont start properly or run properly.this really helps you in diagnostics of an engine that has issues. IF you have low compression this will find it. must have for any mechanic.
Dave Ivany
2025-03-29 14:20:36
the tester was good quality and works great on my skidoo .
Hank
2025-02-06 19:45:51
Ok for occasional job.
Sady Ducros
2024-11-26 17:45:33
Don't use it yet
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