My guess is your Oil Control Valve itself is leaking. I guess I’ll do all 3 (valve cover gasket、oil control valve seal、oil control valve) when it’s time for me to do them.Have heard gaskets are more leak prone than sealant applied properly.
so I just found oil collecting around the OCV despite me just putting a brand new OEM seal in the valve cover. This is disappointing. Any ideas?
this is after I wiped it off, but there was oil all over the harness plug and around the edge of the seal itself.
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I have heard other users in this repair having found out it was the OCV itself that was leaking. Keeping that in mind, and using the video for instruction I replaced all 3, OCV, OCV gasket, and valve cover gasket. Thanks for the video it was helpful.
It’s a follow up here. Turns out there were 3 separate issues.
oil control valve started leaking at the bottom of the engine, and was the source of the dripping.
Valve cover was seeping oil.
Oil pan was also seeping a bit.
All fixed up and good to go.
Maybe I’ll get another 170,000km out of it? Maybe.
Thanks for sharing your experience.Well dang, there’s another $100+ part.
In other news, I got the trans drain pan off, cleaned up, filter changed and all sealed up again. I found 3 of those snapups from my Integra oil pan job so I made use of them. Mazda sealant smells exactly like Permatex Ultra Grey, so I’m doing what Permatex says and waiting an hour before I put final torque on the bolts.
Bolts all cleaned up. I took out the 4 worst ones and replaced those with the new ones. I lightly clamped my Dremel into the vise, with a brass brush, and held each bolt in needle nose vise grips. Made it very easy.
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The Mazda sealant comes with this genius key to roll up the end of the tube and force the sealant out. Works like a charm! Definitely hanging onto that to use with my other sealant tubes.
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Drain pan all cleaned up. I scraped the larger sealant pieces with a razor blade, then hit the rest of it with the Dremel and brushes. The inner edge of the old sealant came off easily with a plastic bristle brush. For the outer edge I used the brass brush with the absolute lightest touch, just enough to get the sealant off without marring the pan finish. When done I gave it a final IPA wipe down.
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So did you actually use snapups to put the pan back? Do you think these Fel-Pro 6mm Bolt Oil Pan SnapUps are worth it to help positioning the pan?With no drain pan the valve body constantly dripped which was rather annoying. I got most of the old sealant off the flange with a razor blade, then use a handheld brass brush to get the rest off. Came out nice and clean. Then I installed the new filter, and also chased all the bolt holes with a tap. Except for 2 that I couldn’t get the tap in straight because of the subframe.
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New sealant on the pan. The tube says to apply a continuous bead to one surface, so that’s what I did. Old sealant showed evidence of going around each hole so I did that, too.
View attachment 294971 All back together now. In a closeup shot I can see the sealant just starting to squeeze out, just like the original sealant was. This is with the bolts only snugged down by hand with a nut driver, in a criss cross pattern. After posting this I’m about to go back out and put the final 88 in-lb on each bolt, since it’s been about an hour.
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All in all not a hard job. Just time consuming because I was working slow and methodically. Since Permatex recommends letting the part cure for 24 hrs before putting back in service, I’m at least going to wait until tomorrow afternoon, or evening, before filling with at least 5 quarts of fluid. I guess because I drained the fluid after the car had been sitting several hours, I got a whole 4 quarts to drain out. Then the drain pan had another quart and the filter a bit more.
Here's the product, and this size should work with the CX5 ATF drain pan.
The OCV itself leaksHave heard gaskets are more leak prone than sealant applied properly.
so I just found oil collecting around the OCV despite me just putting a brand new OEM seal in the valve cover. This is disappointing. Any ideas?
this is after I wiped it off, but there was oil all over the harness plug and around the edge of the seal itself.
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So did you actually use snapups to put the pan back? Do you think these Fel-Pro 6mm Bolt Oil Pan SnapUps are worth it to help positioning the pan?
And I don’t believe there’s a schematic in FSM showing specific sequence of criss cross pattern to tighten the ATF pan bolt up like the valve cover bolts?
It took me a while to figure out the part number of this problematic Oil Control Valve (OCV). In the beginning I thought it’s:⋯ also, after getting the ATF up to temp, my OCV looked like this. Guess I’ll look at getting a replacement. Would I need to change my brand new valve cover gasket again also?
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Still would like to know this out of curiosity. If you can post some pictures that would be even better!⋯ How much crud and sludge accumulated on the magnet and ATF pan after 113K miles?
And one more suggestion on OEM parts source for OCV solenoid PE01-14-420A. This eBay seller partsouq is the international automotive parts seller partsouq.com located in Sharjah, north of Dubai, United Arab Emirates. Somehow they manage fast shipping to the US and the price is great!It took me a while to figure out the part number of this problematic Oil Control Valve (OCV). In the beginning I thought it’s:
Control Valve - Mazda (PE01-14-440A) $110.57
But that OCV is located on the side of the engine above the oil filter. The leaky OCV you have on engine top actually is Variable Valve Timing (VVT) Solenoid:
Control Valve Solenoid - Mazda (PE01-14-420A) $188.72
Consider the high price of this OCV solenoid, I’d just spend additional $35 for valve cover gasket and OCV seal, although I believe you should be able to re-use these 2.
Control Valve Solenoid - Mazda (PE01-14-420A) $188.72
Valve Cover Gasket - Mazda (PY01-10-235) $20.84
Engine Valve Cover Washer Seal - Mazda (PE01-10-2D5) $15.00
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Thank you for confirming. If anybody wants the Japan made filters for either the 2.5 NA or 2.5T engines, you can get them from partsouq.com. They are in Dubai but ship worldwide. I just ordered 20 filters for both my 2.5 and 2.5T and should be here Thursday. Total with 3 day air shipping was $200 so $10 a piece for oem Japan made filters. If you change every 5k then buy bulk and save![]()
Very nice job and well written report on the fluid change... OCV looked like this. Guess I’ll look at getting a replacement. ....
IMO, the oil leak on this oil control valve solenoid is different from the oil pan leak. The leak on OCV is pressure related, whereas the oil pan is not. If the internal seal of OCV is broken, it will change the internal oil pressure of OCV which regulates the variable valve timing. And since it’s pressurized, I doubt the extra layer of silicon sealant applied between the gap of solenoid and valve outside can actually do something to prevent oil leak pressurized from inside.Very nice job and well written report on the fluid change
Here's an alternative to immediately buying and replacing that OCV valve. The oil leak is undoubtedly a result of an internal seal breaking down, and IMO the actual operation of the valve is unaffected by the leak. So the idea I'm proposing is to replace that seal by building a new one on the outside of the valve.
It starts by first getting the oil completely removed from the surface of the valve, and hopefully not having it seep back into the gap (after a couple iterations if necessary). If it remains clean and dry, then it simply becomes a matter of working a bit of your RTV into the gap where the leak is coming from, and perhaps overlap it a bit on each side. Then wait 24 hours for the RTV to completely cure.
Now your first reaction to what I wrote above will probably be Redneck, and yes it is indeed! But the bottom line for any repair would be if it works or not. And in this case, you have nothing to lose if it doesn't work, except a few minutes of your time.
Around four years ago, I noticed a weep leak coming from the oil pan on my Kia Forte, and did exactly what I described above to the seal area of the pan, along with snugging up some of the pan bolts which had become loose. I had fully intended this to be a very short term and temporary patch, and planned to do a gasket replacement in the Spring when warmer weather showed up. However, that 'temporary' patch remained weep free (to this day), so I've never been given any reason to fix what is no longer broken.
If you're a strictly-by-the-book guy, then this type of thing will not appeal to you, and I can understand that point of view. But I wanted to send it your way, just in case you're someone who is willing to occasionally travel off the straight and narrow pathway.
Well, I already had conceded that this might not work. But the point I was trying to make is this is a VERY easy and zero $$ thing to try, with nothing lost if it fails to work. I would always be up for trying something like that, but you and anyone else are free to reject it out of hand as you choose.... And since it’s pressurized, I doubt the extra layer of silicon sealant applied between the gap of solenoid and valve outside can actually do something to prevent oil leak pressurized from inside.
I wonder if there is a certain type of RTV sealant with this kind of application in mind.Very nice job and well written report on the fluid change
Here's an alternative to immediately buying and replacing that OCV valve. The oil leak is undoubtedly a result of an internal seal breaking down, and IMO the actual operation of the valve is unaffected by the leak. So the idea I'm proposing is to replace that seal by building a new one on the outside of the valve.
It starts by first getting the oil completely removed from the surface of the valve, and hopefully not having it seep back into the gap (after a couple iterations if necessary). If it remains clean and dry, then it simply becomes a matter of working a bit of your RTV into the gap where the leak is coming from, and perhaps overlap it a bit on each side. Then wait 24 hours for the RTV to completely cure.
Now your first reaction to what I wrote above will probably be Redneck, and yes it is indeed! But the bottom line for any repair would be if it works or not. And in this case, you have nothing to lose if it doesn't work, except a few minutes of your time.
Around four years ago, I noticed a weep leak coming from the oil pan on my Kia Forte, and did exactly what I described above to the seal area of the pan, along with snugging up some of the pan bolts which had become loose. I had fully intended this to be a very short term and temporary patch, and planned to do a gasket replacement in the Spring when warmer weather showed up. However, that 'temporary' patch remained weep free (to this day), so I've never been given any reason to fix what is no longer broken.
If you're a strictly-by-the-book guy, then this type of thing will not appeal to you, and I can understand that point of view. But I wanted to send it your way, just in case you're someone who is willing to occasionally travel off the straight and narrow pathway.