I'd be voting for seals. Usually if it is seals, you can pull the manifolds and find streaks of oil coming down the stem and pooling on the head.
Bill Cardell TurboDog's Dad www.flyinmiata.com www.fmwestfield.com Sales 1-800-359-6957 Tech 970-464-5600 Before you call, check out http://www.flyinmiata.com/FAQ/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rob Ebersol Sent: Monday, July 20, 2009 11:48 AM 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
