Pulse air tube - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-02-2001, 05:44 AM
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Pulse air tube

I need some help here.My check valve in the pulse air system went bad. It melted the small valve above it. So
I am off to the salvage yard. Does anybody have a good way of pulling all the emissions out of a 258. I need a basic map on how to unplug the emissions and just hook up the basics. The motor is stock but I did the nutter bypass last summer and it ran great.If anybody can help me out that would be great.
Thanks RCJ7

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post #2 of (permalink) Old 01-02-2001, 09:20 PM
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Re: Pulse air tube

Removing the pulse air is very simple. Disconnect the two thin vacuum lines that run from the pulse air to the vacuum junction block on top of the valve cover. Plug the open holes in the junction block with screws or golf tee's. Unscrew the hose clamps at the tops of the metal pulse air tubes and remove the valves. One metal line goes to the catalytic converter and the other goes to the exhaust manifold down pipe. You can either cap these off where they are or you can cut them back to within a few inches of where they start and close them off their. To close them off, just use vise grips to flatten the metal tubes and then fold them over them selves a couple of times. Just make sure it won't affect any emissions tests you may have where you live.

'88 Sahara
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