Right ive got a xr3i(mfi) and its blowing blue smoke out the back. Ive changed the valve stem seals twice and also done a compression test which came back as
Cyl 1 - 149
cyl 2 - 149
cyl 3 - 148
cyl 4- 150

so there all way within tollerances(they were done when the engine was warm btw)

Any other ideas?