Leakdown test time?
Larry White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger Whooosh 2004 Titanium Mazdaspeed MX-5 LowCountry Miata http://www.lowcountrymiataclub.net Masters Miata RAGS 074 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rob Ebersol Sent: Monday, July 20, 2009 1:48 PM To: Miatapower Miata Power Subject: smokey on startup I've picked up a new-to-me 90 to move my FE driveline over too. Until I have a garage built, I opted to just stick another 1.6 in it to replace the blown unit and give me a DD. So now that it's in and running, I'm getting horrendous smoke on startup. After it has been running at normal temp for awhile the smoke is gone. I also pulled the pcv valve and that changed nothing. The engine has sat for 4 yrs, so I expected the possibility of valve stem seals, but the fact the smoke goes away, makes me think this isn't seals. So I figured rings - sealing when they get up to temp. I pulled the plugs and number 1 & 2 had trace oil on them after the engine had started and run for maybe 15 seconds. 3 & 4 were fine. Next I did a compression check and here's what I saw: 1 = 180psi 2 = 179psi 3 = 175psi 4 = 178psi I thought that compression looked very good for a 92 1.6. The cylinder head is spotless, no oil staining and the piston stops don't have hardly any staining/carbon on them- you can see the metal. Any suggestions on where to go from here? I considered check the head torque - maybe I've got a gasket that leaks into the cylinder when it's cold and seals when hot. I had that with a coolant once. The only time I've had bad valve seals (another engine that sat forever) the engine made oil smoke all the time... or am I wrong and thinking it's NOT valve seals? Thoughts? thx-rob _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
