Thread: Snorkels and Air Filter Housings

If the valve is in good condition it should seal up and not suck any water in.

However I have removed the valve on all of my vehicles and just check/clean regularly.

Originally Posted by Jock The Rock

Gday

I have a 300 Tdi Defender. A while ago I fitted a snorkel. A short while after that I read that I should silicone or seal up the small evacuator valve on the air filter housing.

This made sense to me; whats the point in having a snorkel when water can still be sucked through that valve straight into the air filter element

So I sealed it up

The other week I learnt the purpose of those little valves. So I checked my air filter and found it quite full of dust that should obviously have been dumped out of that valve.

I'm just after peoples thoughts on this

Whats the answer?

Check my air filter more often or fit a new valve and hope it doesn't suck water in?

Thanks

Jock, I'm not familiar with the valve, but I imagine it would work in the same manner as truck ones do. Trucks have a rubber 'duckbill' that closes in it's normal position, you pinch the ends together to drain the excess dust. The valve would not let significant amounts of moisture in, when driving through water you would not be revving hard, so yes have an operational valve.

leave the valve alone check it before every fording session and after. inspect it on every service.

its also very good at letting water out if someone sticks a hose down your air intake...

There you go, two answers........each conflicting, back to you to decide.

Originally Posted by V8Ian

There you go, two answers........each conflicting, back to you to decide.

Conflicting??? Where???

All 3 responses say that the valve should seal fine if in good condition.

The main reason I removed mine is the valves were either nonexistent or stuffed. On a 4BD1 county you also need to enlarge the valve hole and use it as the intake when fitting a turbo.

Thanks for the replies

I suppose I probably assumed a bit, mine didn't look like it would seal to well at all. (Its still probably the original)

I think I might just order a new one and see how it goes

Originally Posted by isuzurover

Conflicting??? Where???

All 3 responses say that the valve should seal fine if in good condition.

The main reason I removed mine is the valves were either nonexistent or stuffed. On a 4BD1 county you also need to enlarge the valve hole and use it as the intake when fitting a turbo.

Ben, you said that you had removed the valve so I presumed that was your recomendation.