I have a 1990 Johnson GT 150, a couple weeks ago a had a restriction in the pee tube, I believe I got that remedied. I noticed when the tube came apart I lost oil pressure (on the guage anyway), so I take it that the guage works off of a vacuum. Now when I get up on plane and trim the motor, at about halfway I start to loose oil press. From about 20psig to maybe 12. Any suggestions are appreciated. <br />--------------------------------------------------------------------------------
