Replacing 3.0 valve cover gaskets. What else?
I need to replace the gaskets soon and I'm wondering what else I should do while I'm in there since I don't know all the history of the vehicle. Timing belt? Water pump?
If I can plan ahead with my bos...I mean my wife, then I can usually get an weekend of garage time uninterrupted. But I better be finished that weekend if I want to drive the truck anytime soon. I've never change a timing belt or valve cover gaskets but I'm sure I could do it. I think. I don't need this to run forever. Just a few years while I save for a 3.4 swap. This is on an 88 4runner. |
If you've got it apart enough to replace the valve cover gaskets. Do a valve adjustment.
Good time to change the PCV valve and its grommet and any hardened or cracking small hoses. There's an ordinarily hard to get to U shaped coolant bypass hose at the rear of the intake.plenum and coolant hoses at the throttle body. |
Absolutely replace the PCV grommet (and valve). At a minimum, check the valve clearances. Adjusting on the 3vze is a little more involved; it requires a special (but not hard to get) tool, and replacement shims.
Replacing the timing belt is a good idea (the "severe" maintenance schedule calls for it to be done every 96,000mi), but doing it the first time could take more than a weekend. (It's not that time-consuming, but as you get into things you may find you need a few trips to the store to replace "stuff.") Whatever you do, start by making intelligible notes of where all the lines to the plenum go. You don't want to be that guy, asking us to straighten it out for you. |
Originally Posted by scope103
(Post 52419528)
Absolutely replace the PCV grommet (and valve). At a minimum, check the valve clearances. Adjusting on the 3vze is a little more involved; it requires a special (but not hard to get) tool, and replacement shims.
Replacing the timing belt is a good idea (the "severe" maintenance schedule calls for it to be done every 96,000mi), but doing it the first time could take more than a weekend. (It's not that time-consuming, but as you get into things you may find you need a few trips to the store to replace "stuff.") Whatever you do, start by making intelligible notes of where all the lines to the plenum go. You don't want to be that guy, asking us to straighten it out for you. Timing belt intimidates me, but this isn't my daily driver so I can take my time and learn. Adjusting the valves isn't something I thought of so thanks for suggesting that. And yes, I will be noting EVERYTHING I do because if I don't put it back together that instant then I will for sure forget how it all goes back together. |
The timing belt (in my mind) is sort of the dividing line between an oil-changer and dedicated amateur. Start here: http://web.archive.org/web/201204051...67timingbe.pdf
The valve adjustment tool looks like this: https://www.ebay.com/p/Toyota-Lexus-...5121964&chn=ps There are those who say they've swapped shims with just a screwdriver, but I'd be in tears long before I got the first one out. I've never found a reliable source for shims other than a dealer, and many dealers don't "stock" all the sizes you might want. Still, if you're going to skip ADJUSTING the clearance, you should at least MEASURE what you have so you can make a conscious decision about what you're going to do. |
Originally Posted by scope103
(Post 52419567)
The timing belt (in my mind) is sort of the dividing line between an oil-changer and dedicated amateur. Start here: http://web.archive.org/web/201204051...67timingbe.pdf
The valve adjustment tool looks like this: https://www.ebay.com/p/Toyota-Lexus-...5121964&chn=ps There are those who say they've swapped shims with just a screwdriver, but I'd be in tears long before I got the first one out. I've never found a reliable source for shims other than a dealer, and many dealers don't "stock" all the sizes you might want. Still, if you're going to skip ADJUSTING the clearance, you should at least MEASURE what you have so you can make a conscious decision about what you're going to do. |
Last, you might want to give your location. YotaTech members are all over the globe, one might be close to you, and she might have actually done a timing belt before. If you can get her help, you're golden. Even if she hasn't done a timing belt before, you can learn together.
Just a thought. |
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