Valve stem seal replacement on 4AGE

[SUP16V]

hey guys


im about to change the valve stem seals in my sx corolla an was wondering to change them does the head have to come off or can it be done with the head still attatched to the block

help greatly appreciated

cheers SUP16V

[slide86]

i think its going to be pretty hard to get a valve spring remover in there with the head on. because the springs are in the head (so to speak) its quiet hard to fit the correct tool onto them.

you can do the ol hit them with a hammer to get the collets to come out, but i think its a bit dodge and you can loose them.

i would have the head removed, then you can get the seals removed and possibly recon the entire head and a new headgasket.

also remember not to mix up the buckets, they are shimmed to the correct height per valve.

[SUP16V]

thats the other thing i just did the head gasket a month ago and i dont wanna get it pulled back off again to replace the valve stem seals

[slide86]

spewing. you really should have had the head checked and the seals done then...... i always get it done when i do heads.

i still think take the head off, but others may have different ideas. see what some others say.

[SUP16V]

lol yeh i know but moneys not on my side of the fence atm so yeh other wise i wouldve got the head done up an some extrude honing done aswell

[EVOSTi]

head gasket is $100.

you can do it with the head on, its harder on these engines than alot of others. you need to make/buy a fitting to feed compressed air into the cylinders, or you can put rope in there like some people do but i personally dont like that method.
then instead of using a hammer and losing your collets and having trouble getting them back on, make a big leaver with a socket to press down on the valve springs, best way probably on these heads.

[SUP16V]

so get a long socket on an extension then push them down

[jeffro ra28]

You will need to be able to lever it. So make somthing that can bolt to your cam cap studs that can then lever on the valve spring. Or make or find some tube that you can bolt into your cam tunnel that you can attatch a lever to press on the springs. You will need a groove or slot cut in the side of the socket so that you can get a magnet in there to fech the collits.

[30psi 4agte]

yeah it can be done no prob

Like has been mentioned you will need to fill the cylinder with compressed air to hold the valves up when you remove the spring.

i do the old spark plug socket and hammer trick to get the collets out. ( it works fine but you will need to be very careful not to loose collets)

Once spring is out the you use a set of long pointy nose pliers to remove stem seal ( note this can be very tricky / hard to get em off!!!)

Once off replace seals and tap on with a socket.

Replacing the springs is the part where you will have to buy a tool to do it with. Snap on make a good one Very easy to use.

If this sounds toooooo hard pull the head off.

[SUP16V]

ok well ive got the proper tool for the valve stem seals and to remove the valve springs ive got one thats run off an air compressor.....

[jeffro ra28]

so you have pneumatic valve spring compressor? That will probably be useless unless you are taking the head of.

[20ValveAE92]

Also just a quick piece of advice when fitting valve stem seals i usually put a little bit of oil on the inside of them and on the lip where where they seal, then get a socket that fits to the size of the steel OD and push it on using an extension. I have seen quite a few people fit using a hammer and punch the rubber seal part clean off the of the seal.

[1JZ-Rolla]

check out the old forums, there were a couple of pretty comprehensive 4AG specific guides there.

[ozjatt101]

Hi all I was wondering if anyone has anyone changed valve stem seal on a 2003 corolla? does the head have to come off?? if not who can someone suggest who can do it in Sydney area (castle hill) , my cars just done 90,000 kms and ever once in a while will blow a puff of smoke on start up
thanks very much
cheers
jeff

[Youngy]

something like this - http://www.youtube.com/watch?v=HtC7huYT_H8

where the tool is probably a Lisle 36050 Valve Keeper Remover