is 90psi compression on all 3 cyl ok? its a 1988 mer 70hp
R ropeman99 Cadet Joined Mar 12, 2010 Messages 13 May 14, 2010 #1 is 90psi compression on all 3 cyl ok? its a 1988 mer 70hp
R ropeman99 Cadet Joined Mar 12, 2010 Messages 13 May 14, 2010 #2 Re: 1988 mercury 70hp any one know?
Alumarine Captain Joined Feb 22, 2005 Messages 3,738 May 15, 2010 #3 Re: 1988 mercury 70hp It's a bit low. If they're even that's good. Was the engine warm? Maybe check them with another gauge? You might try a de-carb.
Re: 1988 mercury 70hp It's a bit low. If they're even that's good. Was the engine warm? Maybe check them with another gauge? You might try a de-carb.
ajgraz Lieutenant Commander Joined Mar 1, 2010 Messages 1,858 May 15, 2010 #5 Re: 1988 mercury 70hp If all were within 10 psi of each other, sounds OK to me for a cold motor.
