[Zak]

I have a 2007 Nissan Titan that seeks to be leaking oil mildly out of the head gasket driver side, what seals or what could it be possible? Can you guys give me a list of items I could buy that is inexpensive to fix without having to take apart the head gasket so I’m not paying a arm and a leg? Thank you

 

[Constable]

That actually looks like a valve cover leak. Most of the oil appears to be coming out of your PCV valve, though someone with more knowledge may chime in and say otherwise.


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[Zak]

Thank you for the reply, hopefully I get some more posts, but what could cause the leak? Do you think the head gasket seals could be worn out? The right side it seems to be a leak around the hose, idk how that’s possible, but I’m hoping it’s not too expensive to fix.

 

[Constable]

Looking on the forum a bit it looks like the fix, depending on mileage, is new valve covers, valve cover gaskets, and PCV valves. Mine is leaking in the same places, just not sopping wet like yours.


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[Zak]

Yeah mine has almost 150k miles on it, hopefully we find the solution or a mechanic posts.

 

[TA CC TX]

Valve cover gasket replacement is not to bad. looks like it's coming out your PVC valve also, replace pvc valve and clean it up to see where it's leaking out.

 

[dubyam]

As has been said, that's not your head gasket. It's your valve covers, and more specifically, it's primarily your PCV valves. They're likely clogged. Cheap and easy to replace. May get harder if the valve covers are sludged underneath, but likely can be fixed for under $25, total, if it's just PCV valves. Clean everything good with a degreaser and some shop towels, then replace the PCV valves. Then watch and see if it leaks anywhere else. If you have to do valve covers, it's about $125 on parts for OEM replacements.

 

[Zak]

Thank you very much for your guys help, I ordered the parts, so hopefully it does the trick, hope you have a great weekend.

 

[tchjts1]

Yeah that's PCV valves being stuck or clogged up.
They are all plastic, so don't go crazy on the torque when replacing them.

As Dubyam mentioned - You should also have some engine degreaser on hand before you put the new ones in. Aside from cleaning the sludge off the valve covers and around the old PCV's before you pull them out, also completely remove those 2 PCV hoses that go up to the fuel rails and spray degreaser through them to get the oil out of them. You'll probably see oil dripping from them when you disconnect from the old valves.

When I installed my new PCV's and put the hose clamps back in place, they still spun pretty freely on the PCV valve nipples, so I moved the clamps up about a quarter inch to get a fresh bite on the hose.

I also went the additional step of adding SeaFoam to my oil crankcase about 100 miles before I was going to do the next oil change. SeaFoam will liquefy any sludge that it comes in contact with and then you just drain it out in your oil change. Just follow the directions on the can. I think it was 1.5 ounces of Seafoam for each quart of oil in the system. I just put in half the can... 8 ounces.

 

[Zak]

Thanks again for the reply, I changed the pcv valves. I don’t know what could be making this noise in this video I took, it only makes it when I press harder on the gas pedal. Almost sounds sort of like gas leaking air, something like that. I have the p0430 code, which says catalytic converters, I replaced both of them and the sensors & I still have the code. I replaced my throttle body as well. What else could be causing the noise in the video, you can really hear it towards the end, I’m out if ideas, I replaced my manifolds with long headers two years ago as well as my exhaust system. Thanks fir replies if I get any.

 

[Zak]

Bump

 

[Zak]

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[Zak]

Bump