Plugging AIR tube. 1985 auto

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Nov 25, 2019 | 07:57 PM

85c4z51

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Plugging AIR tube. 1985 auto

My air pump had a bad bearing so I bought a delete kit on eBay.

now the long tube that runs on top of the exhaust manifold has exhaust gases coming out of it when the car is running. I thought the pipe had a check valve to prevent this?

am I able to remove the plug or whatever it is in the picture and cap/plug it here? Does any one happen to know the thread size? I am saving for headers but need to cap/plug this pipe on both sides of the engine in the mean time. I appreciate any help!

Nov 25, 2019 | 08:45 PM

Benny42

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From: Magnolia Tx

The size is 1/2" pipe. At any hardware store get 3 of them. Get the galvanized ones, they won't rust. Remove the check valves and thread them on.

Nov 25, 2019 | 08:57 PM

85c4z51

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Quote:

Originally Posted by Benny42

The size is 1/2" pipe. At any hardware store get 3 of them. Get the galvanized ones, they won't rust. Remove the check valves and thread them on.

thanks. So just to be clear. The part I circle in the pic IS a check valve? I’m getting conflicting answers on whether there is a check valve or not..

Nov 25, 2019 | 09:02 PM

Patsgarage

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From: Outside the Quick Stop N.J.

Yes, that is the check valve. I would put some anit-sieze compound on the threads just in case you ever have to take the cap off again.

Nov 25, 2019 | 09:23 PM

85c4z51

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Quote:

Originally Posted by Patsgarage

Yes, that is the check valve. I would put some anit-sieze compound on the threads just in case you ever have to take the cap off again.

thank you.

one more question. Why do I need 3 of them? It looks like I only have 2. One on each side of the block (driver/passenger side). My smog pump is removed with a pulley kit.

Nov 25, 2019 | 09:26 PM

Patsgarage

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From: Outside the Quick Stop N.J.

Quote:

Originally Posted by 85c4z51

thank you.

one more question. Why do I need 3 of them? It looks like I only have 2. One on each side of the block (driver/passenger side). My smog pump is removed with a pulley kit.

I think there is a another port somewhere else, I just can't remember where right now.