I have just install other head on my car. I f**ked up installing the new valve stem seals by forgetting to put bottom spring retainer on first. So i carefully took them off then reinstalled them and thought i would risk it.

and now the car it is burning a lot of oil and producing white smoke. the smoke is worse 6)when deaccelerating. the compression is 195psi (D16Z6) across all cylinders.

Do you think this could all be down to the valve stem seals?

 

YES!

when the car smokes when there is high vacuum situations is due to valve guide seals.... and when you are decelerating there is a high vacuum situation.

 

the head was also ported by a friend of mine he ground the valve guides down a bit due to them protuding into the port a lot. could this cause a problem???

 

I pulled the injectors and you can see it is oily in there. I then pulled the header and looked up the ports and you can see a tiny run of oil from the bottom of the valve guide. So it has got to be either valve guide or seals. They where a patten part valve stem seal as honda ones are £80 over here. you get a cheap option and an expensive option over there here they are all the same price. think i may pull the head and swap my uprated cam and springs over on to the old head i took off. That only kicked out a bit of smoke if you gave it death changing gear. Is that valve seals? do i risk not changing the valve seals on the old head???????????