FreeTecProfessional Petrol Gas Engine Cylinder Compression Tester Gauge Kit Auto Tool

Excellent set for testing engine compression on petrol engines. Bought this to test some older cars to double check for head gasket issues and other troubles and it works brilliantly and helps take some of the guess work out of the problem solving.It's well built and I have had no air leaks yet. Also comes in a sturdy plastic storage case which is easily stored away until needed and has multiple adaptors for different sizes port holes. 100% recommend for the home mechanic or even professional use as a back up you cant go wrong.

Works perfectly. Fits 10mm motorcycle plug holes. The gauge is identical to a much more expensive one I bought a few years ago, only difference is the brand name has been removed from this one. The fittings are slightly cheaper but work perfectly with no leaks, only thing to reccomend is slightly oil all the air fittings when you receive this item. Great value for the money.

I can't comment on the accuracy since I don't have an expensive calibrated one to compare it against, but it seems to be function well, has lots of adapters for various thread sizes which makes it easy to use, I assume they calibrate them in the factory using a test rig so accuracy should be good, and most importantly it's cheap

Great product. Bought to check pressures in lawn mower and two stroke garden gear . Seems well made and comes with an assortment of adapters to fit various spark plug sockets.

Great, does exactly as it says on the tin😂Product is perfect and gave me accurate readings ,

Doesn’t work , had to borrow a working one from local garage , unfortunately due to COVID I missed the return date picture of gauge on left shows a draper gauge showing a healthy engineOn the right this gauge that would lead you to think your engine is scrap , as they say but cheap buy twice

Good quality

I was looking for a kit like this to test the compression on my Ford Fiesta 2003 1.4. This was the only kit I could get the next day and before the weekend so I bought it. It worked well however I struggled getting the scre fitting into the car because the plug holes are buried inside the rocker cover. Luckily it came with one that just has to be held in which if you have someone to help you works well, however if you don't you may struggle. You can't beat it for the price and it could just be my car that I had issues with.