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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'>My experience: without some air in the hose or hard line the oil pressure gauge needle will vibrate from oil pump pressure fluctuations. The air acts as a damper to prevent that.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'>I replaced the flexible hose without thinking about air getting into the system and the gauge worked fine. When I did think about it, I thought I should bleed the air, which I did. The needle immediately began vibrating severely and continued until I disconnected the line at the gauge and reconnected it without bleeding. A couple years later during my return from Conclave in San Diego, I noticed the needle vibrating again. Investigation found the nut on the line behind the gauge loose, with a drop of oil hanging from it. Apparently, the line bled itself through the loose nut. Disconnecting and reconnecting the line fixed it.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'>Steve Byers<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'>HBJ8L/36666<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'>BJ8 Registry<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'>AHCA Delegate at Large<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'>Havelock, NC USA<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Comic Sans MS";color:#002060'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Healeys [mailto:healeys-bounces@autox.team.net] <b>On Behalf Of </b>Simon Lachlan<br><b>Sent:</b> Tuesday, November 10, 2015 4:58 PM<br><b>To:</b> 'healeys'<br><b>Subject:</b> [Healeys] Oil pressure pipe<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB>The flexible pipe which comes out of the block on the RHS, under the carbs, and is the beginning of the pipework to the oil pressure gauge..............<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>I think that mine is seeping a leetle tiny seep where it comes out of the block. Nothing that matters, but it won’t get any better.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>So, my guess is that there’s a dodgy washer in there somewhere. Now, if I take it all apart, air will get in to the pipe???<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Does that matter?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>If it does matter, what’s the cure?....Run the engine and loosen off the connection at the back of the gauge??<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Simon <o:p></o:p></span></p></div></body></html>