<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Before going that route, I’d suggest cracking open the feed nut on the back of the pressure gauge wile the engine is idling. Have a pan under it to catch the dripping oil. Air trapped in the line will also cause a bouncing needle even with an engine that is in good condition. <div class=""><br class=""></div><div class="">Dave <br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Aug 18, 2025, at 6:32 PM, Richard Jim Hockert <<a href="mailto:rjhco459@gmail.com" class="">rjhco459@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="content-type" content="text/html; charset=utf-8" class=""><div dir="auto" class=""><div class="">Either worn oil pump or worn bearings can result in pulsating oil pressure.</div><div class=""><br class=""></div><div class="">Unevenly worn bearings can allow leakage in specific positions during rotation, which will result in pulsating oil pressure, OR</div><div class=""><br class=""></div><div class="">A worn drive gear on the oil pump spindle or camshaft can cause the oil pump to pulse. </div><div class=""><br class=""></div><div class="">Either condition will require inspection inside of the engine - ugh…</div><div dir="ltr" class="">Best regards,<div class="">Jim</div></div><div dir="ltr" class=""><br class=""><blockquote type="cite" class="">On Aug 18, 2025, at 4:49 PM, Richard Antal via Healeys <<a href="mailto:healeys@autox.team.net" class="">healeys@autox.team.net</a>> wrote:<br class=""><br class=""></blockquote></div><blockquote type="cite" class=""><div dir="ltr" class=""><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false" class="">Fellow Healeyphiles,</div><div dir="ltr" data-setdir="false" class=""> Today my '65 BJ8 showed a rapidly oscillating oil pressure needle whether at idle or at speed. Oil level normal says the dipstick. The oil pump probably has 130K of use. Is this new finding a harbinger of worse things to come? Need I do anything about it? Thanks for any advice offered.</div><div dir="ltr" data-setdir="false" class="">Rich Antal</div></div><span class="">_______________________________________________</span><br class=""><span class="">Support <a href="http://Team.Net" class="">Team.Net</a> <a href="http://www.team.net/donate.html" class="">http://www.team.net/donate.html</a></span><br class=""><span class="">Suggested annual donation $12.75</span><br class=""><span class=""></span><br class=""><span class="">Archive: <a href="http://www.team.net/pipermail/healeys" class="">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive/healeys" class="">http://autox.team.net/archive/healeys</a></span><br class=""><span class=""></span><br class=""><span class=""><a href="mailto:Healeys@autox.team.net" class="">Healeys@autox.team.net</a></span><br class=""><span class=""><a href="http://autox.team.net/mailman/listinfo/healeys" class="">http://autox.team.net/mailman/listinfo/healeys</a></span><br class=""><span class=""></span><br class=""><span class="">Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/rjhco459@gmail.com" class="">http://autox.team.net/mailman/options/healeys/rjhco459@gmail.com</a></span><br class=""><span class=""></span><br class=""></div></blockquote></div>_______________________________________________<br class="">Support <a href="http://Team.Net" class="">Team.Net</a> <a href="http://www.team.net/donate.html" class="">http://www.team.net/donate.html</a><br class="">Suggested annual donation $12.75<br class=""><br class="">Archive: <a href="http://www.team.net/pipermail/healeys" class="">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive/healeys" class="">http://autox.team.net/archive/healeys</a><br class=""><br class=""><a href="mailto:Healeys@autox.team.net" class="">Healeys@autox.team.net</a><br class="">http://autox.team.net/mailman/listinfo/healeys<br class=""><br class="">Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/dmasucci@charter.net<br class=""><br class=""></div></blockquote></div><br class=""></div></body></html>