3.2 intake manifold removal
I have had the seemingly common problem of misfire on one of the cylinders in my 159 3.2 v6 and after some (extensive) investigation with diagnostic kits, swapping over of coil packs, etc I have discovered that one of the spark plugs was completely buggered.
I have decided to swap out all 6 with iridiums but I am habing trouble getting the inlet/intake manifold off. There is a hard plastic/nylon pipe at the rear of the manifold that looks like either a vacuum pipe or oil/fuel recycling pipe that refuses to budge. Is it a case of just using a bit of force or does it need some heat to soften the pipe? If the pipe does break or I have to cut it, is it easy enough to replace?
I am being wary because I have cut seemingly innocuous pipes before only to find that the other end is sealed against the block or something. I was told that removing the manifold was a 15 min job, I have yet to come across anything that simple on this car, it took me 3 days and a trip to a local engineering firm to change the brake pads!
Any help would be gratefully received before I lose patience with this car.