<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=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Apr 5, 2020, at 9:59 PM, Dave Maynard <<a href="mailto:dave@themaplehillfarm.com" class="">dave@themaplehillfarm.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Have cracked injector lines one at a time, and it gets quieter on #5</span></div></blockquote></div><br class=""><div class="">But only on #5?</div><div class=""><br class=""></div><div class="">When you crack the others the engine misses, but the noise remains?</div><div class=""><br class=""></div><div class="">I wonder if something about cylinder 5 is somehow different so that the compression is higher, and so it’s igniting (pre-igniting) too much before top dead centre in just that cylinder?</div><div class=""><br class=""></div><div class="">Eg #5 piston slightly higher than the other 4?</div><div class=""><br class=""></div><div class="">Roger</div></body></html>