Is a new grommet necessary with new PCV valve?

[crinkles]

I am thinking about replacing my PCV valve. Can get on Amazon delivered to Australia for $19. Locally online they are asking $30 without shipping.

However I can't find a grommet for my car on amazon. Is it necessary to replace the grommet?

I also see OEM valves have green tacky cover on the threads, while the Fram one does not. Is this necessary?

 

[mechanicx]

I think with the 4-cylinder PCV the grommet isn't used. The green tacky cover on the threads is probably thread sealant. It's not totally necessary as the threads seal like pipe threads, but I would get the OEM PCV valve and not the Fram anyway.

 

[crinkles]

This parts guide shows grommet required
http://motospecs2.ocrmdemo.com/assets/files/downloads/Fuelmiser_PCV_Valves_Vaccuum_Switches.pdf

Weird.

 

[INDYMAC]

I would not change the PCV valve without a new grommet in hand. Over time, these things become hard and brittle. If you remove the old one and the grommet breaks apart, then you're SOL.

 

[Donald]

Originally Posted By: INDYMAC
I would not change the PCV valve without a new grommet in hand. Over time, these things become hard and brittle. If you remove the old one and the grommet breaks apart, then you're SOL.


+1. The longer you wait to replace one, the more chance it will break into pieces trying to get it out. Then you will have to pull the valve cover to get the pieces that dropped.

 

[Papa Bear]

Can you not buy just the grommet from the dealer?

 

[Artem]

I have the same engine as the OP in my 2006 Scion tC. The OEM PCV valve screws into the valve cover. There is technically nothing needed but the new PCV valve in order to make the switch.

I used an OEM replacement as it looked to be high quality whereas the aftermarket junk looked like... Well, JUNK!

Just my $0.02

 

[Astro14]

If it's threaded, there's no grommet, typically...

I have used OE Toyota with good results, but they don't need replacing often.

 

[skyship]

Wallace is always saying he needs a new grommet!!
Check with the parts supplier because if there is one it might be supplied with the valve.

 

[mechtech2]

Check out the old one [if it has one].
If it seems resilient and pliable, then there is no immediate need.

 

[GMBoy]

Regarding PCV valves....it has been my experience that this is one of those parts that using the OEM part only is the best way to go. I learned this the hard way back in the late 1980's. I changed the PCV in my Buick Grand National with a Purolator and within a week I was leaking oil. To those in the Buick GN crowd, we know GN's leak but the single Neoprene style seal fixed all that. So leaking was a surprise to me. I read up on it and learned that all the aftermarket PCV valves were designed to meet a WIDE range of applications so as to minimize parts on the shelf. Just so happens the calibration was no good for a turbo Buick. I replaced the purolater PCV with a correct AC DELCO and oil leak stopped immediately.

This is true with many aftermarket parts, spark plugs even, they are designed across a wide range of specs to fit more models. I want the part that is spec'd JUST for my car.

Note: Not sure what I am going to now since AC Delco has stopped making the PCV for my GN...I have 1 left so that should last me I hope...I don't drive it much.

 

[mechanicx]

Originally Posted By: skyship
Wallace is always saying he needs a new grommet!!


Haha good one.

If the PCV threads in and not push in then Wallace doesn't need a grommet. That chart posted is not very precise. Certain year V6s and certain year 4 cylinder may need a grommet, but not with the thread in valves.

 

[crinkles]

I found this neat Japanese parts site that can ship. But I also may wait till 100k miles to change this valve. Car is currently at 80,000 miles. Is there a spot where preventative replacement is worthwhile? Will also check with dealer RE cost. If this is somethiing I only need to every 100,000 miles well then saving $20 isn't that big a deal.

http://www.amayama.com/search/?q=12204-28020

 

[Doog]

I never replace PCV valves until 150-200k miles. I clean them with aerosol brake cleaner then re-install with some white permatex hydraulic sealant on the threads. The permatex seals and remains pliable for easy removal later.