🔧 DAYUAN 17 pc Diesel Engine Compression Tester Kit Tool Set - Ultimate Automotive Compressor Testing Tool Review

I opened the box. Hardware scattered and dirty. Some rust. A fitting is completely clogged and rusted. Definitely needed.

Parts are reasonably priced but have passed multiple tests well. Good range of adapters and solid caliber. Not the most accurate, but it will tell you if a cylinder isn't building up enough compression. Worth the cost for DIY

This product comes in a very nice hard case. When my husband wanted to use it, he testified and then stopped working. Not overly thrilled, we only used it once. We are considering whether to send it back or order a new sensor and try to fix it ourselves. Maybe you want to try a new product or maybe we got a lemon.

Purchased to test compression on a Westerbeke 12.5 BTDB (4 cylinder) diesel alternator. a 10mm glow plug adapter is required for this. the kit was ok, very good for the price. The sensor appeared to be within specification. The pressure relief valve worked perfectly. So for $49 I did my own compression test in under an hour. It would cost $300 to pay a technician with a boat ride and back. What's not to like as it's already paid for itself!