{"id":1422,"date":"2017-10-15T23:59:50","date_gmt":"2017-10-15T22:59:50","guid":{"rendered":"http:\/\/www.purplemeanie.co.uk\/?p=1422"},"modified":"2025-01-31T13:12:06","modified_gmt":"2025-01-31T13:12:06","slug":"build-session-26-coolant-bleeding-unproductive","status":"publish","type":"post","link":"https:\/\/purplemeanie.co.uk\/index.php\/2017\/10\/15\/build-session-26-coolant-bleeding-unproductive\/","title":{"rendered":"Build Session 26 : Coolant Bleeding &#8211; Unproductive"},"content":{"rendered":"\n<p>After the euphoria and relief of getting the engine going yesterday we thought we&#8217;d have another look at what might be causing the coolant temperature to get so high. We only had an hour or so in the morning but couldn&#8217;t resist another look to see if we could find any obvious air-locks. Little did we know at this point that the coolant temperature was supposed to get that high (105C is normal), but we weren&#8217;t taking any chances.<\/p>\n\n\n\n<p>We played around for a while, attempting to bleed air from the system: heater connections, rear of cylinder head, thermostat T-piece and radiator top hose. There didn&#8217;t seem to be any air in the system from what we could tell and due to a lack of time decided again to consult with Derek and see what he said in the morning.<\/p>\n\n\n\n<figure class=\"wp-block-image alignnone is-style-default\"><a href=\"http:\/\/www.purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"352\" data-attachment-id=\"1425\" data-permalink=\"https:\/\/purplemeanie.co.uk\/index.php\/2017\/10\/15\/build-session-26-coolant-bleeding-unproductive\/three-wise-monkeys-adjusted\/\" data-orig-file=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted.jpg\" data-orig-size=\"1660,973\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1514414046&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Three Wise Monkeys &amp;#8211; Adjusted\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Three wise monkeys reviewing the coolant system&lt;\/p&gt;\n\" data-large-file=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted.jpg\" src=\"http:\/\/www.purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted-600x352.jpg\" alt=\"\" class=\"wp-image-1425\" srcset=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted-600x352.jpg 600w, https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted-768x450.jpg 768w, https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted.jpg 1660w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption>Three wise monkeys reviewing the coolant system<\/figcaption><\/figure>\n\n\n\n<p>At the end of our efforts the engine bay still looked like this&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-image alignnone is-style-default\"><a href=\"http:\/\/www.purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/IMG_3061.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"2048\" data-attachment-id=\"1424\" data-permalink=\"https:\/\/purplemeanie.co.uk\/index.php\/2017\/10\/15\/build-session-26-coolant-bleeding-unproductive\/img_3061\/\" data-orig-file=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/IMG_3061.jpg\" data-orig-size=\"3024,4032\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;1.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;iPhone 7 Plus&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1508078635&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;3.99&quot;,&quot;iso&quot;:&quot;40&quot;,&quot;shutter_speed&quot;:&quot;0.058823529411765&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"IMG_3061\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Engine bay the day after first start&lt;\/p&gt;\n\" data-large-file=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/IMG_3061-1536x2048.jpg\" src=\"http:\/\/www.purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/IMG_3061-1536x2048.jpg\" alt=\"\" class=\"wp-image-1424\" srcset=\"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/IMG_3061-1536x2048.jpg 1536w, https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/IMG_3061-450x600.jpg 450w, https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/IMG_3061-768x1024.jpg 768w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/a><figcaption>Engine bay the day after first start<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>After the euphoria and relief of getting the engine going yesterday we thought we&#8217;d have another look at what might be causing the coolant temperature to get so high. We only had an hour or so in the morning but couldn&#8217;t resist another look to see if we could find any obvious air-locks. Little did [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1425,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_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}},"categories":[3,51],"tags":[33],"class_list":["post-1422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-caterham-420r-build","category-caterham-blog","tag-build"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/12\/Three-Wise-Monkeys-Adjusted.jpg","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8yl38-mW","jetpack-related-posts":[{"id":1428,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2017\/10\/21\/build-session-27-more-bleeding-coolant\/","url_meta":{"origin":1422,"position":0},"title":"Build Session 27 : More Bleeding Coolant","author":"John Martin","date":"October 21, 2017","format":false,"excerpt":"It was going to be \"back to the coolant system again\" today. I had left the car at the point where we'd started the engine but were worried about the coolant temperature getting well over 100C, something like 105C. We then chickened-out, \u00a0turned it off and decided to ask Derek.\u2026","rel":"","context":"In &quot;Caterham 420R Build&quot;","block_context":{"text":"Caterham 420R Build","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/caterham-420r-build\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/IMG_3093.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/IMG_3093.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/IMG_3093.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/IMG_3093.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/IMG_3093.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/IMG_3093.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":1105,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2017\/09\/23\/build-session-17-5-caterham-420r-water-and-oil-overview\/","url_meta":{"origin":1422,"position":1},"title":"Build Session 17.5 : Caterham 420R Water and Oil Overview","author":"John Martin","date":"September 23, 2017","format":false,"excerpt":"This is a post from the future and a rather technical one at that - so stop reading now if that's a big turn off for you :-) Having got the engine running I thought it would be a useful addition to the blog to have a diagram of the\u2026","rel":"","context":"In &quot;Caterham 420R Build&quot;","block_context":{"text":"Caterham 420R Build","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/caterham-420r-build\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/09\/420R-With-Heater-and-Dry-Sump-Engine-Bay-Plumbing-FL-24.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/09\/420R-With-Heater-and-Dry-Sump-Engine-Bay-Plumbing-FL-24.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/09\/420R-With-Heater-and-Dry-Sump-Engine-Bay-Plumbing-FL-24.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/09\/420R-With-Heater-and-Dry-Sump-Engine-Bay-Plumbing-FL-24.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/09\/420R-With-Heater-and-Dry-Sump-Engine-Bay-Plumbing-FL-24.png?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/09\/420R-With-Heater-and-Dry-Sump-Engine-Bay-Plumbing-FL-24.png?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":1282,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2017\/10\/14\/build-session-25-main-engine-start\/","url_meta":{"origin":1422,"position":2},"title":"Build Session 25 : Main engine start!!!","author":"John Martin","date":"October 14, 2017","format":false,"excerpt":"It\u2019s not that I've been terribly worried about the prospect of starting the engine... but... I certainly didn\u2019t want to have missed something stupid and to then screw up a very expensive lump of aluminium and steel. Today I also had another pair of hands and a tripling of brain\u2026","rel":"","context":"In &quot;Caterham 420R Build&quot;","block_context":{"text":"Caterham 420R Build","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/caterham-420r-build\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/First-Start.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/First-Start.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/First-Start.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/First-Start.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/First-Start.png?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/10\/First-Start.png?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":1707,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2017\/11\/29\/post-build-check\/","url_meta":{"origin":1422,"position":3},"title":"Post Build Check","author":"John Martin","date":"November 29, 2017","format":false,"excerpt":"Uh oh - its crunch time! Somebody else that knows way more than I do, is going to take a look at my handiwork and tell me how much my ignorance is going to cost me. The Post Build Check is taking place today, Wednesday after I\u2019d finished my Big\u2026","rel":"","context":"In &quot;Caterham 420R Build&quot;","block_context":{"text":"Caterham 420R Build","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/caterham-420r-build\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/11\/IMG_0247.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/11\/IMG_0247.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/11\/IMG_0247.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/11\/IMG_0247.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/11\/IMG_0247.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2017\/11\/IMG_0247.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":10795,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2025\/02\/02\/simple-engine-cooling-explained\/","url_meta":{"origin":1422,"position":4},"title":"Simple Engine Cooling Explained","author":"John Martin","date":"February 2, 2025","format":false,"excerpt":"https:\/\/youtu.be\/CR-OY-jDGv8 \u00a0Finally after nearly 5 years of work (on and off) I've published my Caterham Duratec Cooling video to YouTube. Ford Duratec Engine Cooling Animation This video was the result of some pretty off the cuff comments made when I was first building my Caterham kit car. I posted about\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/02\/Engine-Plumbing-Thumbnail-002.5.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/02\/Engine-Plumbing-Thumbnail-002.5.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/02\/Engine-Plumbing-Thumbnail-002.5.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/02\/Engine-Plumbing-Thumbnail-002.5.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/02\/Engine-Plumbing-Thumbnail-002.5.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/02\/Engine-Plumbing-Thumbnail-002.5.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":5134,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2019\/09\/20\/ecu-diagnostics-part-13-2-obd-ii\/","url_meta":{"origin":1422,"position":5},"title":"ECU Diagnostics &#8211; part 13.2 : OBD-II","author":"John Martin","date":"September 20, 2019","format":false,"excerpt":"The OBD-II diagnostic protocol is well defined and information about it can be found\u00a0in On-board Diagnostics. It's a mish-mash of many diffrerent standards, both physical and electrical, that I'll refer to as OBD-II. There's also a complete breakdown of the Services and PIDs (see below) that can be found in\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/1422","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=1422"}],"version-history":[{"count":1,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/1422\/revisions"}],"predecessor-version":[{"id":10727,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/1422\/revisions\/10727"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/media\/1425"}],"wp:attachment":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=1422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/categories?post=1422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/tags?post=1422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}