{"id":1267,"date":"2014-12-08T16:49:02","date_gmt":"2014-12-08T15:49:02","guid":{"rendered":"https:\/\/atomicalex.com\/?p=1267"},"modified":"2014-12-08T16:49:02","modified_gmt":"2014-12-08T15:49:02","slug":"carb-fun-part-its-not-the-piston-either","status":"publish","type":"post","link":"https:\/\/atomicalex.com\/?p=1267","title":{"rendered":"Carb Fun, Part It&#8217;s-Not-the-Piston-Either"},"content":{"rendered":"<p>So&#8230; yeah. I tore down the top end. I re-ringed. I honed. I timed. I reassembled. I attempted to fire. No dice.<\/p>\n<p>A friend who has been absorbing most of my frustration about this project told me a rather involved story about another Japanese bike with similar issues. In the end, it was the ignition controller &#8211; what I call the ECU or knock box.<\/p>\n<p>In the Super Sherpa, the ECU controls ignition retard and advance. If the plug is firing at the wrong time, the engine won&#8217;t actually produce power, even if it does light off. As I&#8217;m getting mixture out of the exhaust, I now know the carb is working. But the funny whooshing noise the bike is making when I take the exhaust off is definitely weird and could be the result of faulty ignition timing. If the mixture is lighting off and blowing out the\u00a0open exhaust valves&#8230;<\/p>\n<p>Next up &#8211; check all of the ignition system components.<\/p>\n<p>I already know the ECU is suspect &#8211; the pinout fails about 60% of the tests required.<\/p>\n<p>Anyone have a spare Sherpa ECU?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So&#8230; yeah. I tore down the top end. I re-ringed. I honed. I timed. I reassembled. I attempted to fire. No dice. A friend who has been absorbing most of my frustration about this project told me a rather involved story about another Japanese bike with similar issues. In the end, it was the ignition [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-1267","post","type-post","status-publish","format-standard","hentry","category-motorbikes"],"_links":{"self":[{"href":"https:\/\/atomicalex.com\/index.php?rest_route=\/wp\/v2\/posts\/1267","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/atomicalex.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/atomicalex.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/atomicalex.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/atomicalex.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1267"}],"version-history":[{"count":1,"href":"https:\/\/atomicalex.com\/index.php?rest_route=\/wp\/v2\/posts\/1267\/revisions"}],"predecessor-version":[{"id":1268,"href":"https:\/\/atomicalex.com\/index.php?rest_route=\/wp\/v2\/posts\/1267\/revisions\/1268"}],"wp:attachment":[{"href":"https:\/\/atomicalex.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/atomicalex.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/atomicalex.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}