I was getting 150-160 too using railroad's compression gauge. Had no long extension (matches long spark plug threads) or O rings like new ones at parts house, so I bought my own. That's when readings shot up to 170 psi. Was worried I had warped valves too. Bill Robertson #5939 >--- In DMCForum@xxxxxxxxxxxxxxx, "Walter Coe" <Whalt@xxxx> wrote: > > What kind of readings are other people getting? > > I tested one engine while doing a valve adjustment. This one had 53K miles > and one valve that rattles. > > Cylinder, PSI > 1 = 155 > 2 = 145 > 3 = 157 > 4 = 121 (guess which one has the valve that rattles) > 5 = 155 > 6 = 151 > > We checked this with the engine dry (i.e., didn't pour oil in the spark plug > holes.) > > I don't think that oiling the engine will really give a true compression > reading anyway. I'm sure that enough thick oil could clog any compression > leak. > > This was almost a year ago and the engine is still running fine (per se) in > a daily driver. > > Walt Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/M=194081.3897168.5135684.1261774/D=egroupweb/S=170512 6215:HM/A=1732163/R=0/SIG=11n0nglqg/*http://www.ediets.com/start.cfm?code= 30510&media=zone> click here <http://us.adserver.yahoo.com/l?M=194081.3897168.5135684.1261774/D=egroupm ail/S=:HM/A=1732163/rand=460795336> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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