chassis

Well done. 16kPa is low pressure (vacuum). Not sure what the nominal value should be.

Vacuum, rather than pressure, makes sense in the crankcase, because it has the tendency to bring in fuel vapors (from carbon canister) and oil vapors (from PCV). This is the intended function.

Idle is when crankcase pressure is at its lowest, which means to say the vacuum is at the greatest: closed throttle plate and no boost.

If you play around with the iCarsoft you can probably find manifold absolute pressure. What is it at idle?

Kendo67

Will have a look tomorrow , just heading off home from work now and its been an exhausting day playing with the car.

K

Eman_9582

Kendo, any update on the oil consumption? I picked up a 958.2 last November (80k miles) and the oil level has dropped about 2 ticks on the display since. There's no sign of a leak or burning oil anywhere though, exhaust is not smoking either so I'm a bit lost. PCV seems ok but I might go ahead and replace all of it for good measure. The one thing that's changed is I used to have a second car which was my DD up until last month when I sold it. So I'm curious (hoping really) if it's also just condensation from sitting around so much.

Kendo67

Not really had a chance to measure the oil level as the car has been in the dealers for six weeks , four waiting on new rear springs and two waiting on a new battery.

Also when the vehicle was in the dealers it had its annual oil change so the level is different now to where it was before the extended dealer visit.

K