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Any tricks to removing the PCV valve screeen?

834 views 9 replies 6 participants last post by  A_B_C_5.0_L  
#1 ·
I'm doing a tune-up on my /90 Mustang 5.0 L. I've got an idle that surges from about 600 to about 900 rpm every few seconds when engine cold, after it warms up the idle surges from about 600 to 700 rpm every few seconds. I've replace all plugs, plug wires, rotor, dist. cap with no change. I pulled the PCV valve and grommet with no problem, but the screen for the PCV valve won't budge. I used a hook at the end of a wire and it still won't budge so I made a sort of snorkle and used that to spray carb cleaner directly onto the screen. The idle now holds perfectly at 750 rpm with maybe a plus or minus 10 rpm. My concern is that this cleaning maybe won't hold for long and I definitely want to remove the screen for proper cleaning. Mark Houlahan, in his book "Mustang 5.0 Projects" (an excellent how-to book by the way) uses a pick to remove the screen, no auto supplie store around here knows what a pick is (maybe it's called something else up here). After struggling with this screen for the best part of any hour, I'm thinking maybe it isn't what is used but that there may be a special technique in removing the screen outside of removing the intake manifold.
Any help or tips would be much appreciated. Thanks in advance.
Cheers,
Mark
 
#3 ·
Thanks Ray, that definitely looks more skookum than the wire I used bent into a hook. Is there any particular place on the screen that you're trying to hook onto?
Mark
 
#5 ·
MAC Tools (possibly other companies)

Make (made?) a specialty tool. Handle like a screwdriver, shaft about a foot long (less than 1/4" dia.), & the end formed like a coarse wood screw. Once you pull the PCV valve, you just stick the tool down to the screen, give it a couple twists to get a bite, & pluck it out.

I paid $15 about fifteen years ago. No telling what they'd gouge you nowadays. But in retrospect, if you had a long, slender Phillips screwdriver w/a ruined point, a few minutes w/a file - making some diagonal grooves around the tip - should yield similar results? Just a thought.

Good luck,
Matt
 
#6 ·
Thanks Matt, if I can't find something that's effective and priced reasonably, I'll make up something myself.
Mark
 
#8 ·
Thanks for the plug on the book Mark. They are simple "dental pick" style and you should be able to get them at Sears...

You can also run a big wood screw into the center and then grab it with a pair of pliers...

You can find them in the Help products usually (the screen). I've gotten them to clean up by soaking them in carb cleaner too, but they're cheap enough to simply replace...

Use some silicone or non-hardening sealer on the rubber grommet too to prevent air leaks...

HTH...
Mark
 
#10 ·
Thanks Mark and Greg. I went over to a Tool shop and found a "seal remover" kit for $5.95, (it looked like it had been kicking around the shop for a few decades but I found the price acceptable). It included something that looked like a woodscrew with a circle at the top for a handle. Basically about 9" long, 3/16 inch dia. That screen and rubber grommet came out within 2 minutes. Man it's sure nice to have the right tool for the job. The screen definitely wasn't worth saving, but one of the local Ford dealers had a screen in stock, so I'm good to go.
Mark, that book of yours has been of more assistance than you can imagine. Next job is to replace the thermostat with a Stant.
Cheers,
Mark