<div dir="auto">Maybe a bucket of BarsLeaks 🤣🤣🤣</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon., Jan. 25, 2021, 9:28 a.m. Michael Oritt, <<a href="mailto:michael.oritt@gmail.com">michael.oritt@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="color:#3333ff">Probably blown gasket at the 3-4 bridge.  My original head suffered from erosion of the metal at the 1-2 bridge, allowing the gasket to blow.  I had it built up enough to work for a while but eventually replaced the head with a DWR AL model.  </div><div class="gmail_default" style="color:#3333ff"><br></div><div class="gmail_default" style="color:#3333ff">Best--Michael Oritt</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 25, 2021 at 4:55 AM Alan Seigrist <<a href="mailto:healey.nut@gmail.com" target="_blank" rel="noreferrer">healey.nut@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">All -<div><br></div><div>My A90 just started running weird.  So I took a compression tester and I'm getting (note the A90 is lower compression than the 100):<br><br>1 - 135 psi<br>2 - 135 psi</div><div>3 - 60 psi</div><div>4 - 60 psi</div><div><br></div><div>When I put the compression tester on number 3, I get blow back through #4 spark plug port.  Then when I put it on #4 I get blow back through the #3 spark plug port.<br><br>Seems to me it's just a blown head gasket.... am I correct?  as far as I'm aware, these heads usually crack between 2 & 3, correct?</div><div><br></div><div>TIA<br><br>Alan</div></div>
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