{"id":10666,"date":"2023-12-04T09:37:13","date_gmt":"2023-12-04T06:37:13","guid":{"rendered":"https:\/\/aviation-news.info\/?p=10666"},"modified":"2023-12-04T09:37:13","modified_gmt":"2023-12-04T06:37:13","slug":"whats-going-on-with-the-oil-pressure-in-my-airplane","status":"publish","type":"post","link":"https:\/\/aviation-news.info\/?p=10666","title":{"rendered":"What\u2019s going on with the oil pressure in my airplane?"},"content":{"rendered":"<p><strong>Air aviation news &#8211; Question for Paul McBride, the <em>General Aviation News<\/em>\u00a0engines expert<\/strong>: I have an oil pressure issue I need help with.<\/p>\n<p>When preparing for takeoff, the oil pressure indicator is in the lower green area during the pre-takeoff run-up. When starting the roll-out the pressure drops to just under the green and remains there when airborne.<\/p>\n<p>The annual was done 1.5 hours ago and no problem was reported then.<\/p>\n<p>The issue was found after a pre-buy inspection. I don\u2019t think the issue was there prior to the inspection. The inspector troubleshooted the problem and was unable to resolve it.<\/p>\n<p>I\u2019m having trouble finding anyone who wants to handle this issue. The sale of the airplane is in escrow pending the resolution of the oil pressure issue.<\/p>\n<p>Any comments or suggestions?<\/p>\n<p>Thank you.<\/p>\n<p class=\"has-text-align-right\"><strong>Mike Freeman<\/strong><\/p>\n<p><strong>Paul\u2019s Answer:<\/strong>\u00a0Mike, thanks for your question and let me see if I can offer some advice that may help you and your maintenance facility find the problem.<\/p>\n<p>I wish you would have provided a little more detailed information, especially exactly what was done during the recent annual inspection.<\/p>\n<p><center><\/p>\n<div id=\"avp_zid_34_or_33_1\"><\/div>\n<p><\/center>The reason that specific information is so important is because, as you mentioned, there were no issues prior to that work being done.<\/p>\n<p>I\u2019m going to take a \u201cSWAG\u201d \u2014 Scientific Wild A%@ Guess \u2014 at this and say I\u2019d bet money that if this engine incorporates an oil pressure housing, when the screen was removed for inspection and reinstalled, the gasket was installed incorrectly.<\/p>\n<p>The initial oil pressure on engine start-up is sufficient to puncture the gasket material, but not powerful enough to allow the normally seen oil pressure on the cockpit gauge. If this were the case, the engine probably suffered no damage and was supplied with enough oil pressure to sustain a safe flight.<\/p>\n<p>On the other hand, if the engine is configured with a full-flow oil filter, we may still experience the same situation providing the oil filter housing was removed during the annual inspection.<\/p>\n<p>Normally, this is not the case because the inspection usually just requires removing the oil filter and cutting it open to inspect for any foreign material. This is where any and all specific details of the annual inspection come into play, which I hope you can understand.<\/p>\n<p><center><\/p>\n<div id=\"avp_zid_34_or_33_2\"><\/div>\n<p><\/center>My best recommendation is to inspect the oil pressure screen housing gasket\/oil filter base gasket for incorrect installation.<\/p>\n<p>Not knowing exactly what was done during the annual, I see no reason for them to check the oil pressure relief valve on the rear of the crankcase behind the #3 cylinder, but if the seat for the oil pressure relief valve ball was not completely concentric on its seating service due to something passing through that area, that also may be something to check. But I have my doubts as to whether that\u2019s the problem.<\/p>\n<p>The best place to start is to review exactly what was done at the annual before beginning any troubleshooting and, if possible, talk to the technician who did the work.<\/p>\n<p>source: <a href=\"https:\/\/generalaviationnews.com\/2023\/12\/03\/whats-going-on-with-the-oil-pressure-in-my-airplane\/\">https:\/\/generalaviationnews.com\/2023\/12\/03\/whats-going-on-with-the-oil-pressure-in-my-airplane\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Air aviation news &#8211; Question for Paul McBride, the General Aviation News\u00a0engines expert: I have an oil pressure issue I need help with. When preparing for takeoff, the oil pressure indicator is in the lower green area during the pre-takeoff run-up. When starting the roll-out the pressure drops to just under the green and remains &hellip;<\/p>\n","protected":false},"author":1,"featured_media":10667,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpscppro_dont_share_socialmedia":null,"_wpscppro_custom_social_share_image":0,"_facebook_share_type":"","_twitter_share_type":"","_linkedin_share_type":"","_pinterest_share_type":"","_linkedin_share_type_page":"","_instagram_share_type":"","_medium_share_type":"","_threads_share_type":"","_google_business_share_type":"","_selected_social_profile":[],"_wpsp_enable_custom_social_template":false,"_wpsp_social_scheduling":{"enabled":false,"datetime":null,"platforms":[],"status":"template_only","dateOption":"today","timeOption":"now","customDays":"","customHours":"","customDate":"","customTime":"","schedulingType":"absolute"},"_wpsp_active_default_template":true},"categories":[92,102],"tags":[],"class_list":["post-10666","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-airports","category-featured-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What\u2019s going on with the oil pressure in my airplane? - aviation news<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aviation-news.info\/?p=10666\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What\u2019s going on with the oil pressure in my airplane?\" \/>\n<meta property=\"og:description\" content=\"Air aviation news &#8211; Question for Paul McBride, the General Aviation News\u00a0engines expert: I have an oil pressure issue I need help with. 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