Air Thermactor Crossover

Martman said:

So I know that this tube provides additional air from the smog pump to the heads but with it being clogged what are the ill affects of that over time? I thought I had read it could harm the cats but currently at work and can't really go back through the research I had done.

Click to expand...

A clogged tube would mean no air being supplied to the exhaust ports during warmup. These go to the first two cats to help with emmissions during warmpup.

After the car is warmed up, the diverter directs air flow to the two main cats, so the tube wouldn't be used at that point.

I don't see it causing an big issue long term. Might be easier to see if there is a tube on ebay, and clean that up

To be honest, it's not really a part that usually needs maintaining. I've never done it on my car, and at the rate I drive it, may never need to.


Sent from my iPhone using Tapatalk

If you have oil issues inside the cylinder? Then yes, the tube may clog up as the oil partially burns and sludges it up. Not uncommon to see


Sent from my iPhone using Tapatalk

There's a few tubes on eBay. One looks practically brand new. Just buy one and swap it out


Sent from my iPhone using Tapatalk

If it's hard to find those, and you see one thats even marinally good, buy it. If you need to clean one out I would think if you take some of the stuff we used to use to soak carb bodies. Used to get it in 5 gal cans. It may take a few days but I think if you drip some in the tubes and let it soak you should be able to clean most of the carbon out of it,
Just a thought. Or maybe a dream
Or can they be bought new?