In need of some advice, my 2.0 fiesta si is burning a shit load of oil from max to min in about 2 weeks.

Now here is where the confusion starts I've done a compression test (wet and dry) and all the cylinders are 150psi ish so shows my rings and valves are ok

The guy who had the car before me stated he had the head rebuilt with new everything including stem seals.

But what's really confusing me is the spark plugs are super clean and a good colour so how can i be burning so much oil and it not show on them? Anyone with any advice on what it could be to by pass the cylinders?? Maybe the EGR? would of thought there would be performance symptoms with that but it's running great.

Thanks

 

Oil cooler? If its got one, rear main seal?

 

If you have a garage can you park it on some paper or cardboard so you can see any drips?

 

Just had to replace the sump on my daughter's Kent engined Fiesta, the sump had rusted through at the front and it was drinking oil like nobody's business. Should help stop the underneath rotting away.

 

I meant to put its burning oil i can see loads of it out the arse when i give it a boot full..

 

Its burning oil out the exhaust that's why i'm confused because surely its it's being burnt it would show on the plugs? especially at the rate my is going down

 

Have you had an emmission test to see if its ok.

 

May be a dodgy or split stem seal, as it may not be entering the combustion chamber and just flowing out the exhaust

 

Yeah could be. Any easy way of checking? are they easy to replace as I've never done stem seals

 

Smoke on overrun down hill, take off manifolds and check valves and guides for oil contamination

 

That or the Pcv valve.

 

It only smokes when I give it a trashing. Especially when I change gear at high revs it puffs alot out. Thanks for the help

 

head gasket, rings or stem seals