986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - How should the oil cap act with a good/bad AOS?

jcb986 · 12-22-2010, 12:04 PM

On a good AOS, you can loosen the oil cap and lift it up. On a bad one, like mine, I couldn't even loosen the cap. Also, if it's a total failure you will get lots of blue smoke. With lot's of oil moving into the combustion chamber you could damage the engine. When mine failed, the engine had a loud screeching like a belt tensioner going out when the engine warmed up. It was pulling air through the front crank seal.

12-22-2010, 12:04 PM	#5
jcb986 Registered User Join Date: Apr 2009 Location: Orlando Posts: 1,266	On a good AOS, you can loosen the oil cap and lift it up. On a bad one, like mine, I couldn't even loosen the cap. Also, if it's a total failure you will get lots of blue smoke. With lot's of oil moving into the combustion chamber you could damage the engine. When mine failed, the engine had a loud screeching like a belt tensioner going out when the engine warmed up. It was pulling air through the front crank seal. __________________ http://i768.photobucket.com/albums/x...6/PC120055.jpg Old Hippie Young Heart 2000 S/3.2 Liter/Tiptronic/Boxster S Sport Package/Cruise Control/Slate Grey Metallic Red Special Leather Interior/Red Floor Mats/Red Hand Painted Instrument Dials/Roll Bar/Windstop Small Carbon Package/Leather Wrap Carbon Wheel/Center Console Exterior Color/Alum Carbon Shift Knob AM/FM Radio w/CD Player & Changer/Digital Sound Package/18" Turbo Wheels/Wheel Caps w/Colored Crest Last edited by jcb986; 12-22-2010 at 12:07 PM.