{"id":1165,"date":"2021-08-13T11:05:35","date_gmt":"2021-08-13T11:05:35","guid":{"rendered":"https:\/\/www.alphabeta.me.uk\/blog\/?p=1165"},"modified":"2021-08-15T12:19:53","modified_gmt":"2021-08-15T12:19:53","slug":"starting-her-up","status":"publish","type":"post","link":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/2021\/08\/13\/starting-her-up\/","title":{"rendered":"Starting her up : Part 1"},"content":{"rendered":"\n<figure class=\"wp-block-gallery columns-1 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/www.alphabeta.me.uk\/blog\/wp-content\/uploads\/2021\/08\/IMG_2960-rotated.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"3024\" height=\"4032\" src=\"https:\/\/www.alphabeta.me.uk\/blog\/wp-content\/uploads\/2021\/08\/IMG_2960-rotated.jpg\" alt=\"\" data-id=\"1150\" data-full-url=\"https:\/\/www.alphabeta.me.uk\/blog\/wp-content\/uploads\/2021\/08\/IMG_2960-rotated.jpg\" data-link=\"https:\/\/www.alphabeta.me.uk\/blog\/img_2960\/\" class=\"wp-image-1150\"\/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p>I have run out of things to do without starting her up!<br>I still need to check the shimming of the oil pump, but according to Haynes, this needs to be done with the engine running.<br>Bleeding the oil pump also needs to have a running engine, so the next step is to mount the fuel tank, and fill it with, initially, some premix at circa 40\/1 ratio.<\/p>\n\n\n\n<p>I had 2 viable fuel taps.<br>The one from the donor bike does not turn off sufficiently, leaving a trickle of fuel running down the tubes.<br>My memory of standard carbs is that with the bike on it&#8217;s sidestand overnight, the fuel used to run through the left hand carb and into the crankcase.<br>If this is a thing, I&#8217;ll need the ability to turn off the fuel at the tank reliably.<br><\/p>\n\n\n\n<p>The tap from the parts bin only seem to flow fuel from one outlet. <br>This is a mystery, as the interior of the tap appears to be as clean as a whistle!<\/p>\n\n\n\n<p>&lt;edit> This also happens with my brand new tap, so seems to be something to do with flow dynamics inside the tap bowl.<br>This tap also does not turn off the fuel sufficiently.<\/p>\n\n\n\n<p>Rather than waste any more time messing about with half usable parts, I invested in a new TourMax dual output fuel tap.<br>With that fitted, it was time to fill the tank with 5 litres of unleaded, and 125cc of 2T oil, and give it a kick&#8230;<br>&#8230;whereupon it starts 3rd kick! Huzzah!<\/p>\n\n\n\n<p>Three things are apparent immediately.<br>1) The right hand carb is leaking from the float bowl gasket<br>2) The engine won&#8217;t run without choke<br>3) The oil level switch doesn&#8217;t work<\/p>\n\n\n\n<p>The first must be dealt with straight away, (with a new gasket), and may be affecting the second, which also may be simply the tickover screws.<br>The third is inconsequential at the moment. I have a spare switch which I swap in later, although it could be a wiring problem, even though I tested the loom by shorting and un-shorting the contacts when I built it.<\/p>\n\n\n\n<p>New gasket fitted to the RHS carb, and I have more clarity on the carburation issue.<br>I have upped the tickover screws and I have a viable tickover while on choke.<br>The engine is warm, the temp gauge is at circa 1\/8th of its travel.<br>Closing the choke means the engine bogs down immediately, and won&#8217;t tickover or respond to even fractional opening of the throttle.<br>With the choke on, the engine bogs down with fractional throttle openings until the revs rise to circa 3000, when the engine catches, and seems to behave normally.<br>Before proceeding, I want to eliminate every other possible cause, so I&#8217;m going to dig around in the parts box to find an original OEM Mikuni choke plunger, and I have a pair of new NGK B8ES plugs to fit.<\/p>\n\n\n\n<p><strong>Oil pump shim measurement.<\/strong><br>Meanwhile, notwithstanding the erratic behaviour of the engine, I have managed to turn it off when the oil pump is at its fullest extent, so I can measure the oil pump shim gap as being between .10 and .15 of a mm.<br>This compares to the text book setting of .15mm.<br>This seems accurate enough to the limit of my ability to measure it at present.<br>(and sufficient for running in which is all this engine will get before the bike is dismantled again)<br>Given that all of my oil pumps are nearly 40 years old, one of them is going off to @Arrow who posts on the RDLCCrazy forums, for an overhaul.<\/p>\n\n\n\n<p>With new plugs, and an OEM choke plunger, the tickover on choke seems much more regular.<br>BUT, when the choke is off, the throttle becomes unresponsive, and the bike runs on the right hand side only.<br>i.e. the left carburettor is  not passing sufficient fuel or air. the mixture is wrong.<br><\/p>\n\n\n\n<p><strong>Drilling the balls.<\/strong><br>It seems I will need to perform the much heralded <a rel=\"noreferrer noopener\" href=\"https:\/\/rdlccrazy.proboards.com\/thread\/50083\/drilling-balls\" data-type=\"URL\" data-id=\"https:\/\/rdlccrazy.proboards.com\/thread\/50083\/drilling-balls\" target=\"_blank\">&#8220;Clearance behind the brass balls<\/a>&#8221; manoeuvre to clean the air corrector circuit in the carb.<br>Obviously, while the drill is out, I&#8217;ll do both carbs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I have run out of things to do without starting her up!I still need to check the shimming of the&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"_links":{"self":[{"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/posts\/1165"}],"collection":[{"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=1165"}],"version-history":[{"count":11,"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/posts\/1165\/revisions"}],"predecessor-version":[{"id":1202,"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/posts\/1165\/revisions\/1202"}],"wp:attachment":[{"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=1165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=1165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alphabeta.me.uk\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=1165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}