1987 Johnson V4: Pressure at Crankcase Port to VRO Pump
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1987 Johnson V4: Pressure at Crankcase Port to VRO Pump
Good Morning. What is an acceptable pulse pressure at the output crankcase pulse port [that drives the VRO oil mixing fuel pump] on a 1978 J110TLCUR Johnson outboard engine? At idle my engine has a pressure there of 3-PSI. Is that normal?
Re: 1987 Johnson V4: Pressure at Crankcase Port to VRO Pump
That is more than enough to pulse the pump diaphragm. Be sure you have the blue colored pulse limiter installed 435009.
1988 15' Sport, 89 Johnson 70HP
1998 22' Progression Merc 300XP
1961 12' Allstar FG 73 Evinrude 25
1998 22' Progression Merc 300XP
1961 12' Allstar FG 73 Evinrude 25