4 Stroke Mercury Outboard Compression Chart

4 Stroke Mercury Outboard Compression Chart – Anything lower can indicate worn or damaged components,. Pressure test was performed with hot and cold engine using two different tester kits. I took a compression test on my 3 cyl mercury ,top piston 180lbs,middle one 150lbs ,buttom on at 90lbs.took the head out i put it flush. 2002 mercury outboard 150 hp salt water series 2 stroke engine.

Everything You Need To Know About Outboard Compression Tests Atelier

4 Stroke Mercury Outboard Compression Chart

Normal atmospheric pressure is 14.7 psia at sea level. Every spot, every tow, every cast. 9 x 14.7 is 132 psia or 118 psig, the latter being what your compression gauge reads.

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#1 hello, recently purchased a 2000 16 sylvan aluminum fishing boat with a 50 hp mercury 4 stroke engine, model # 50 elpt 4s. Fourstroke make every minute count. You have places to go, and the mercury 40 to 60hp fourstroke family of outboards is the easiest way to get there.

Check The Readings We Got For Our Subject Engine, A 2006 Suzuki Df115.

This post tells you how. What should compression be on 50 hp 4 stroke mercury? 155 lbs on all cylinders.

Dealer Replied Should Be Over 200 Per Cylinder.

May 3, 2019 8 mins read mercury 4 hp fourstroke test choosing the right outboard for your tender is never easy. Because of the automatic decompression feature on these small outboards, your compression test numbers may appear to low compared with other engines,. Leak down test are only viable options on 4 stroke engines and compression test are no longer even recommend on 4 stroke outboards by yamaha.