Changing Valve Cover Gaskets
#1
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From: Solano Co, CA Originally a North Idaho Hick
Changing Valve Cover Gaskets
Anything special I need to know before tackling the drivers side valve cover gasket on my 3.slow? I'm really hoping that is where the leak is. It sure looks like it. The leak runs down onto the exhaust manifold and you can guess what happens after that..Looks pretty straight forward but it usually does till I start turning wrenches.
#3
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From: Solano Co, CA Originally a North Idaho Hick
Ya it looks pretty easy especially since I have the ISR mod and all that airbox crap is outta the way. I have both gaskets and probably should replace em both but I'm just gonna do the drivers side for now I think.
#5
I put a bit of RTV in the corners where the flat surface on the back of the head meets the curved part. Hope that makes sense.
Last edited by DH6twinotter; Jan 24, 2007 at 06:42 PM.
#7
First you would want to get an engine hoist. Second prep 3.0 for pulling out. Third, acquire 3.4. You know the rest...
DS is cake....like previously stated....make sure you put RTV in the bottoms of the half moon shapes at front and rear. PROPERLY TORQUE or you'll be doing it again. I overtorqued mine and they leaked like crazy.
DS is cake....like previously stated....make sure you put RTV in the bottoms of the half moon shapes at front and rear. PROPERLY TORQUE or you'll be doing it again. I overtorqued mine and they leaked like crazy.
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#8
I did both of mine a few weekends ago pass side sucks that was the one leaking for me.
get new bolts one of mine snapped off before it even got to torque.
in the fsm it says to put a dab of sealant on the corners
look under cylinder head page32 or 41
http://personal.utulsa.edu/~nathan-b...sm/engine.html
get new bolts one of mine snapped off before it even got to torque.
in the fsm it says to put a dab of sealant on the corners
look under cylinder head page32 or 41
http://personal.utulsa.edu/~nathan-b...sm/engine.html
#9
I've had problems with the bolts breaking and stripping out before reaching torque specs as well. You can use longer bolts in some of the holes. When I said that I prefer to put a bead of RTV on the new gasket, I meant the whole thing. Not just the corners. I must have warped covers because mine are a pain in the arse to seal up. They need all the help they can get.
#10
Did mine about 2 years ago when I had a 3.0L.
Here's the link with pics:
https://www.yotatech.com/forums/show...+gasket+troy65
Hope it helps!
Troy
Here's the link with pics:
https://www.yotatech.com/forums/show...+gasket+troy65
Hope it helps!
Troy
Last edited by YotaJunky; Jan 24, 2007 at 07:05 PM.
#13
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From: Solano Co, CA Originally a North Idaho Hick
Thanks for all the input.. this is just the info I was looking for. Something as simple as changing out a valve cover gasket can always be complicated. Troy65 great link! My engine was dry for the first 5 years and 75K I put on it. It wasn't until I got the Taco a few months back and stopped driving it everyday it started springing leaks. I think she's begging for attention.
#14
i've paid for this job 2 times now; once at a small shop at 75k, recently at my local dealership while in for the steering recall...115k. the mess of spaghetti under the hood always keeps me out of there!
watch out for the cam seals as well as the valve covers.
watch out for the cam seals as well as the valve covers.
#16
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From: Solano Co, CA Originally a North Idaho Hick
Just dont overtighten them. They shouldn't be much more than hand tight to avoid crushing the gasket. I did mine today in about an hour. Some of the bolts are a PIA the ass to get to but not that bad. I couldn't believe how clean it looked under my valve cover. Guess that's what changing your oil every 3000 religiously the entire life of a vehicle will do. Here's a pic

You can see in the lower rear corner where it started leaking. I gooped the corners pretty good with RTV sealant when I put it back together.

You can see in the lower rear corner where it started leaking. I gooped the corners pretty good with RTV sealant when I put it back together.
#17
Yeah, looks good under there! 
I put in my new gaskets a week or so ago when I got to that step in putting things back together after my head gasket replacement. I tightened the cover bolts down pretty tight... probably too tight. I had to go back in to do one step I found out I had forgotten, and when I put it back together I was a lot more gentle with the gasket.
My question now is, did I damage the gasket and now need to replace it, or am I okay since I caught it and fixed it right away? There was no obvious damage to the gasket...

I put in my new gaskets a week or so ago when I got to that step in putting things back together after my head gasket replacement. I tightened the cover bolts down pretty tight... probably too tight. I had to go back in to do one step I found out I had forgotten, and when I put it back together I was a lot more gentle with the gasket.
My question now is, did I damage the gasket and now need to replace it, or am I okay since I caught it and fixed it right away? There was no obvious damage to the gasket...
#18
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From: Solano Co, CA Originally a North Idaho Hick
You probably smashed it some and if that's the case it's done. All depends on how tight you went. If it doesnt' leak run it but if your at a place where it's still partially torn apart might be worth the $25 and piece of mind to just go ahead and replace em again while they are easy to get to.



