Replacing exhaust check valve
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5th Wheeling
Joined: Mar 2003
Posts: 38
Likes: 1
From: CT
Replacing exhaust check valve
Help!!The exhaust/air pump check valve broke away from the air tube. I have a '96 with the 5.0 engine. How much trouble is it to replace the valve? It looks like a *itc* to reach. I really want to get this fixed--exhaust smell in the truck is bad.
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
If its the one near the back of the engine that runs into the metal air tube it may be a PITA to get out of the air tube. I ended up heating the tube in a vice to get the lower half of the one that broke on mine out. That one is the only one that I know of that is not threaded onto any of the air injection pipes. I could be wrong about thiat since some emissions stuf changed in 96 from previous years.
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5th Wheeling
Joined: Mar 2003
Posts: 38
Likes: 1
From: CT
Thanks Greystreak for the response. The AIR check valve is threaded onto the AIR crossover pipe at the back of the engine and it is a "PITA" to get at. We broke the threaded nut right off the pipe, so now we have to replace the pipe and the check valve, something I was hoping not to do. For future info, there is a wrench hex under the valve nut that can be used to prevent what happened to us. Unfortunately, you can't see things very well back there near the firewall--it's a grope job to get at. There's not much room to work either. Thanks again.
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
Tell me about it! I ran around for months unable to find my exhaust leak until I relaized that check valve had been blown in half. Sorry for the misinformation. I thought you were referring to the one that is in line down to the cats. Fact of the matter is, all of the check valves are a PITA.
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5th Wheeling
Joined: Mar 2003
Posts: 38
Likes: 1
From: CT
Yep, this one was in half, too. It took a month, and getting it up on a lift, to finally find it. Of course the parts are Ford parts--the valve you replaced is available at any parts stores. Thanks again.
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