One of the most basic - and also regularly overlooked - maintenance work on a Tacoma or 4Runner is replacing the PCV valve. This is a one-means examine valve that allows blow-by crank case burning gases ago right into the engine to be combusted, quite than vented to the environment (wbelow they would certainly cause pollution).

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As a check valve, the part is quite straightforward, however over time the spring in the check valve can wear out, and also the grommet that holds the PCV Valve onto the engine can harden as a result of constant heat/cool cycles. When that happens, replacing it becomes hard, as bits can fall into the engine - and also that"s not excellent. Therefore, preventative replacement is a good idea.

With the components costing only a few dollars, and the whole project taking less than 30 minutes, let"s get began. First, pick up the following:

And, you"ll only need a couple of tools:

10mm socket

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With every little thing in hand, gain began by - if you have actually one - rerelocating the air box on the intake hose by loosening the hose clamp with a 10mm socket.

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Once the air box is removed, you"ll have actually excellent accessibility to the PCV valve. Use a shop rag to clean about it and prevent getting crud in your engine, and then wiggle it out of the grommet.

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Follow the hose connected to the PCV valve and also note where it re-enters the intake manifold. You won"t actually be able to see the end of the hose, however it sindicate fits roughly a steel nipple, so when you uncover the end, pull right down and also the hose will release.

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The last item to remove is the grommet. This is regularly the trickiest component, since the grommet might crumble as you start to remove it. Be careful, and also usage a collection of picks to rerelocate it from the top of the engine; retrieving any little bits that autumn down as you do via a pair of needle nose pliers.

Then, press in the brand-new grommet!

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With the new grommet in place, initially insert the end of the hose that enters the intake manifold by feeling for the steel nipple and sliding the hose over it. Again, you will not view this procedure, however it"s basic enough to perform by feel.

Finally, insert the PCV Valve right into the finish of the PCV hose, and then push the PCV Valve into the grommet.

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That"s it! Rearea the air box, and also you"re done.

Looking for one more straightforward maintenance job? How around relocating the rear diff breather on your Tacoma or on your 4Runner? That"s somepoint that must be done to eincredibly Tacoma and 4Runner in order to avoid more costly repairs in the future!