Hmmmm...... So you are saying your car runs best (runs at all) with the oil filler hose going to the filter box, and the crank vent hose going to the manifold? Whichever works best I suppose... but your initial post and subsequent responses got me curious, so I went out to have a look see at my 145.

It has the vent hose going to the cleaner box, and the oil cap hose to the manifold. And the hoses ain't the right lengths to set up the other way. My 145 ('71) is a very original, unmolested, low mileage original owner car...so I was certain it is original, but just to be sure, I looked in the owners manual pictures of the engine, and sure enough...mine does indeed appear to be correct...

That said though, my car doesn't idle very well either...and I've always thought it was a carb issue or vaccuum leak. Perhaps I'll try it backwards and see if it helps.

-Matt

My '71 145s