Air Injection removal problem.

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Jul 31, 2016 | 08:10 PM

speedemon1084

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5th Wheeling

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Air Injection removal problem.

I have searched the threads and can't find the answer I am looking for. I am in process of bypassing the air injection on my 96 F250 5.8. I am having problems getting a wrench or anything on the backside of the manifold to take that hose off. Any suggestions?

Jul 31, 2016 | 08:18 PM

85e150

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JMO but on a '96 it's probably best left alone. OBDII O2 sensor is somewhere downstream of that isn't it? Even OBDI could get a CEL out of it.

Can you come up from below with any more room or visibility?

Jul 31, 2016 | 08:34 PM

speedemon1084

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5th Wheeling

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96 250 is still OBD1. O2 sensor is just in front of where the cat used to be. Trying to come from underneath the oil pan is in the way.

Aug 1, 2016 | 07:38 PM

speedemon1084

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5th Wheeling

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The only thing I can think of that I haven't tried yet is to cut the head off of the wrench. Maybe that will give me the room?

Aug 6, 2016 | 08:52 PM

speedemon1084

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5th Wheeling

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Thought I had it figured out, I was wrong, as usual.

Aug 7, 2016 | 10:07 AM

Scndsin

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From: Central Mississippi

I'm not familiar with the back of a 96 head AIR set up. Could you take a pic. There are so many variations its hard to advise & no one who is is speaking.

On the back of my 94 5.8 was a block attacked to the cross pipe & held down by a single, don't know, 3/8ths? small head bolt. Maybe 11-12 MM (you never can tell what's there)

Under the block is a 5/8ths, 11 TPI (threads per inch or "coarse") hole you can plug with the appropriate size bolt, or aftermarket plug. Some use a copper washer.

Hope this helps.

Aug 7, 2016 | 10:28 AM

speedemon1084

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5th Wheeling

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It doesn't bolt to the back of the head. It bolts to the exhaust manifold, jus before it turns down and connects the the exhaust pipes. I requires an 1 1/4 wrench.