pcv valve
10-29-16, 04:33 PM
#16
To remove PCV on early '99 RX300
Do I remove anything in the way first?
After removing the hose clamp and hose on one end, do I need to remove a clip on the other end, or is it in the grommet in a friction fit?
I don't want to break it in the process of removing it.
Thanks!
After removing the hose clamp and hose on one end, do I need to remove a clip on the other end, or is it in the grommet in a friction fit?
I don't want to break it in the process of removing it.
Thanks!
03-26-17, 08:56 PM
#18
Moderator
Grommet goes in first and it needs to be seated right. Removing the old (hardened) one, was a pain for me and installing the new one was a breeze.
Then the PCV goes in.
New grommet should not be rock hard. I hope the aftermarket is of the right size.
Salim
Then the PCV goes in.
New grommet should not be rock hard. I hope the aftermarket is of the right size.
Salim
09-11-18, 04:06 PM
#19
10th Gear
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Help...
so I went to replace pcv valve. Pulled straight up and it busted in half. I rotated it and it was free pulled up and snap. I got top half and spring came with. So in the hole was a small portion of the skirt on the valve and the grommet. Then for some time tried to get portion that remained in the cover. Ugggh it fell down in the cover. Spend an hour fishing for it. Got 99% of grommet. Plastic skirt pieces fell into the abyss. So now what. Mechanic I talked to about replacing rear valve said to do pcv first and see what happens. Am I ok to drive with those little pieces in there or am I going to have to tow it to the shop and have cover replaced and pieces out????
09-11-18, 04:07 PM
#20
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Busted pcv valve
so I went to replace pcv valve. Pulled straight up and it busted in half. I rotated it and it was free pulled up and snap. I got top half and spring came with. So in the hole was a small portion of the skirt on the valve and the grommet. Then for some time tried to get portion that remained in the cover. Ugggh it fell down in the cover. Spend an hour fishing for it. Got 99% of grommet. Plastic skirt pieces fell into the abyss. So now what. Mechanic I talked to about replacing rear valve said to do pcv first and see what happens. Am I ok to drive with those little pieces in there or am I going to have to tow it to the shop and have cover replaced and pieces out???? Am I fugged?
09-11-18, 07:32 PM
#21
Moderator
There is a small platform underneath the valve. You can try vacuum to pull remaining.
I hope you have not discarded what you pulled out as you can tell what is still left inside.
Next is just pull the valve cover out instead of taking any risking driving as is.
Salim
I hope you have not discarded what you pulled out as you can tell what is still left inside.
Next is just pull the valve cover out instead of taking any risking driving as is.
Salim
09-05-19, 09:37 PM
#22
Driver School Candidate
Remove Grommet for screw in Lexus 12204-20040
I purchased an OEM PCV part number Lexus 12204-20040 and when I tried to replace the plastic PCV with the 90 degree angle with the new metal PCV I realized I could not install without removing the rubber bushing. Is this the correct way to install? I am hesitant to remove the bushing and try to screw in the new one.
09-06-19, 09:43 AM
#24
Moderator
Apart from the part being wrong. PCV valve change "must" be accompanied by a change of rubber insert .. specially if it has been years in service. Let me assure you that there is no hope in getting a seal with the old hardened rubber. The old one also gives a fight in coming out and I had to cut it to remove it. Luckily RX first gen has a platform underneath the opening and that kept the small pieces from falling in. Controlled cut is better than a rip.
Salim
Salim
09-07-19, 05:13 AM
#25
Driver School Candidate
I purchased an OEM PCV part number Lexus 12204-20040 and when I tried to replace the plastic PCV with the 90 degree angle with the new metal PCV I realized I could not install without removing the rubber bushing. Is this the correct way to install? I am hesitant to remove the bushing and try to screw in the new one.
12204-20040 is for
RX300 2001-2003 6 Cyl 3.0L
1MZFE; 1MZFE; MCU10, MCU15
Last edited by copperny; 09-07-19 at 05:30 AM. Reason: add info
09-07-19, 01:50 PM
#27
Driver School Candidate
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dugoram (09-09-19)
09-15-19, 02:15 PM
#30
Moderator
I dont think so.
Here is the emanation given by some that the PCV lets out the pressure in the engine and with reduced pressure the oil does not leak readily. What is overlooked is the breather tube for the oil. If it was not fro the breather tube the oil once pumped up would have a hard time flowing down under gravity. The PVC works under suction from the intake [thee differential comes due to low pressure from the other side].
Have you searched for other things like additives. I am not a proponent of additives, but some folks swear by it. I would switch to dino oil and test out with a less flow rate oil [do not exceed the the specs based on the climate you are in.
Salim
Here is the emanation given by some that the PCV lets out the pressure in the engine and with reduced pressure the oil does not leak readily. What is overlooked is the breather tube for the oil. If it was not fro the breather tube the oil once pumped up would have a hard time flowing down under gravity. The PVC works under suction from the intake [thee differential comes due to low pressure from the other side].
Have you searched for other things like additives. I am not a proponent of additives, but some folks swear by it. I would switch to dino oil and test out with a less flow rate oil [do not exceed the the specs based on the climate you are in.
Salim