Location: Menai area of Sydney
Registered: June 2003
Re: 4AFE engine query
Sun, 15 February 2004 02:28
I don't a an FE but I left the oil filler cap off my FC and had a lot of oil to clean out of the engine bay when I realised why I could smell oil in the car. So it definitely spits oil out the hole. If you have a gear wheel there it is only natural that oil will get flung off it so if the hole's open and the engine is running.
As for your rocker cover plenum hoses, the thicker one has the PCV (shiny bit) plugged into the rocker cover. If you pull that out (it's only mounted in a rubber grommet) you should be able to suck and blow in each end and find that air only goes one way through it. If it goes both ways you need a new PCV (positive crankcase ventilation) valve. So air should be going from the rocker to the plenum only. If you pull this hose off when the engine is running you are allowing more air to get into the plenum (after all the sensors in the intake) so the tuning and hence revs will be affected.
As for the thin hose, it looks like it is connected between the rocker cover and the throttle body (before the butterfly). I'm not sure what its purpose is but if there are no other air inlets into the body of the engine it may be supplying fresh air after the air filter) to circulate through the crankcase for the PCV to suck out and it would therefore have air sucking into the rocker cover.
So it sounds like your gf's car might be running properly
Sun, 15 February 2004 02:28
