Review on WINTOOLS 1000 Psi Diesel Engine Compression Pressure Tester - Compatible with Ford, Cummins, NAVISTAR, Detroit by Michael Boyce

Like many dissatisfied customers of this product, after struggling to get into the tight spaces of the engine and pulling out my first glow plug, it took me 20 minutes to get the gauge. for connection to fittings for reasons of space. When I tried to check the cylinder, the pressure gauge didn't hold. looks like the check valve is missing or stuck. After reading many similar reviews I decided to refuse a replacement and buy another brand. I've had similarly disappointing results from this brand when I bought a radiator pressure gauge that also didn't come with a reading. Complete bullshit, spend your money and buy a quality tool. It's not worth the disappointment.