An oversized valve will be more expensive, and it may lead to instability and other problems. If you get a "purolator" replacement from Advance Auto have a 3/8"-7/8" hose clamp on hand, as the barb is one size smaller than it should be, and the hose will not seal correctly with the standard wire clamp. PCV valve 8M2017060 is for V-8 MerCruiser engines made by General Motors (305, 350, 377 and 454 cid) plus the 575 SCi. A valve that is too small will not pass the required flow, and the process will be starved. The most noticeable was a high pitched "puff" of what sounded like a compressed gas escaping every 1/2 - 1/3 second, changing with RPMs, that could be heard through the front driver wheel well. Either way if you haven't replaced yours for a couple of years I'd recommend it, my engine doesn't seem to run any smoother or have more power, but those idle noises were driving me nuts. The old one still rattled, I really think it was the grommet that made the difference sealing up the whole assembly. With a product like this 4 Inlet, it was important for aspects such as positive crankcase ventilation (PCV) to be analyzed to ensure that the PCV system will. I will only use OE for PCV valves as a result. I ended up tossing them and went with Motorcraft and oil use stopped. Both started using oil soon after replacing the PCV valves with aftermarket parts. The PCV itself seemed unusually heavy for its size, especially compared to the replacement, 130k worth of gunk perhaps? demarpaint said: I had problems with aftermarket PCV valves on two different Ford E-150 vans with the 4.9L I6. ![]() The grommet was rock hard and snapped in half when I removed it, there's absolutely no way it was still sealing correctly. Ok, ok, I know it says Ford, but there is no way I'm buying a Tacoma fender cover until this one gives up the ghost.It didn't fix my 400RPM idle, but replacing my PCV valve and grommet got rid of a few phantom noises that had me concerned about the condition of my engine. Oh yea, don’t forget to use your fender cover. Push the hose over the valve, this will help to screw it in and replace the wire clamp. Push the tube over the valve, this will make screwing it in easier. If it does not rattle and you give it a number of shots of cleaner and it still doesn’t rattle, you’re going to have to buy a new valve. make sure you have the right PCV, they are rated different for each engine. Give it a shot or three of throttle body cleaner, until it runs out clear. Once the valve is turning easily, push the tubing over the end of the valve and rotate until you can pull it out (the tubing will help prevent dropping the valve between the firewall and the engine). Second, the PCV (positive crankcase ventilation) system relies on engine vacuum from a vacuum port below the throttle. manifold bolt lengths LS3 Swap PCV Questions 5 cam, GMPP CNC LS3 heads. First off, never run your engine with an overfilled crankcase, an overfilled crankcase will expose the oil to the spinning crank thus causing the oil to faom, oil pressure to drop and subsequent engine damage. so.I hooked a New breather up there, and ran it to a Catch Can. A couple of months ago, I discovered I had a breather function in the early Delkron cases that I'm running. ![]() Put the pipe over the wrench, stabilize the wrench as best you can and apply fairly heavy counter clockwise pressure (my valve was probably installed by Godzilla, because it took some effort to get the sucker moving). and a 15 degree valve angle I tried a set of TEA CNC heads and lost 15hp Our. Hi Everyone, Have a '96 80' Evo spcn softail, w/ ev-27 cam, modified cv carb, 2 into 2 aftermarket pipes mild build. At the valve, squeeze the wire spring clamps together, pull toward you about ¼ inch, pull the hose off the valve. The job is a minor PITA but it’s less so with the engine cold.ģ/8 inch drive ratchet about 6 inches longĥ/8 inch inside diameter fuel line tubing, 2.5 inches long, any straight tubing will do. PCV valve replacement: re 2008 Tacoma V6.Īfter searching the internet and finding minimal info on the PCV valve replacement I thought I’d add my $0.02 worth.
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