This is topic 5.0 Mustang PCV valve in forum Tech Talk at Northern California Ford Owners  .


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Posted by j0eyabs (Member # 1026) on :
 
I wanted to know if anyone can tell me exactly where the pcv valve is on a 90 5.0, also when the pcv valve is removed how do you take out the spark arestor
 

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Posted by j0eyabs (Member # 1026) on :
 
t
 

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Posted by shade-tree (Member # 298) on :
 
the spark arrestor comes out by hand. Find the absolute rear, center of the upper intake, basically it's "in" the lower intake, at the far rear of it. Note the air-tube (a vacuum line) that goes to the upper intake. The PCV valve is "inline" in this airtube and pops in/out just with friction by hand.
spark arrestor sits all the way to the bottom. it's a mesh, and then the pcv valve sits on top of it.
 

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Posted by BIGJUNE (Member # 1716) on :
 
the pcv valve is located in the back near the fire wall under the upper intake. its plugged to the lower intake on a grommet.good luck
 

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Posted by j0eyabs (Member # 1026) on :
 
ok i located the pcv valve and pulled it, not the spark arrestor looks like its clogged, what can having a clogged aresto do to car performance, and i tried sticking my finger in the hole to take it out and i cant, how would i remove it.
 

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Posted by st5150 (Member # 51) on :
 
Are you talking about the wire mesh under the PVC valve? Find a long skinney screw. Screw it into the wire mesh and use a pair of pliers to pull the screw and wire mesh out. You can try cleaning it with carb cleaner, but if its hopeless, the Ford dealership sells new ones.
 

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Posted by j0eyabs (Member # 1026) on :
 
ok ill do that ill just buy a new one from ford, the part that sucks is that ill have to remove the upper intake cause theres hardly any room for me to reach down there. oh well
 

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Posted by st5150 (Member # 51) on :
 
I've never heard of anyone removing the upper intake to do anything PVC related. Sit up on the fender and you'll be fine.
 

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Posted by j0eyabs (Member # 1026) on :
 
ok ill try it but i had a really hard time getting my had down the hole where the spark arestor was, but i was thinking of replacing my valve cover gaskets so i might as well do it
 

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Posted by big matt (Member # 1124) on :
 
typical mustang
 

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Posted by street_illegal_stang (Member # 1554) on :
 
yeah,
what does that do to the 5.0s performance???
 

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Posted by st5150 (Member # 51) on :
 

quote:

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Originally posted by street_illegal_stang:
yeah,
what does that do to the 5.0s performance???

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