Cylinder head smog holes.

[unilec5544]

I have these holes in what I believe to be for a smog pump or something similar. Does anyone know if there are plugs available so that I can plug these two holes in the cylinder heads, I would hate to have to remove both heads at this stage.

Appreciate any help.

[ozbilt]

From memory, there is no pressure on those holes. I may be wrong, but I seem to remember something like a welsh plug in the big hole and a tube with a threaded top in the smaller hole.

[unilec5544]

Thanks Kerry, there is a carbon build up, so thought there may be an exhaust leak. I will look into welsh plugs, swinging a hammer in the engine bay, will be a challenge.

[Nuts]

As Oz indicated, I believe you will find a threaded hole at the end of the heads. These are the air pump holes. All you need to do is plug these holes with a bolt.

[unilec5544]

As Oz indicated, I believe you will find a threaded hole at the end of the heads. These are the air pump holes. All you need to do is plug these holes with a bolt.

Awesome thanks for that, I will have a good look today and just block it off.