So I got oil leak coming from the engine. Sounds great. Is it just the valve cover gaskets or do I also have to replace the valve cover? What kind of brand is recommended? -5.5th 3.5L

 

It's well recommend around this interwebs to discard the aluminum valve covers as scrap metal get some money back and pay the difference to get to $30+ per side plus some rtv and gaskets to upgrade to the plastic valve covers on the 6gen 3.5...courtesynissanparts.com

 

you're close.

All 3.5's have plastic valve covers.
The 5.5 gen valve stem seals in the rocker cover are just crap, plus the rocker covers are a lot more expensive for the older 3.5's than the 6th gen valve cover which fits perfect as well.

If it's aluminum it's a 3.0 and you can just replace those tube seals without having to do the whole rocker cover like on the 3.5's.

Check nissanpartsasap.com as well.
They were cheaper than courtesy for these last I ordered.

 

Right On Bro!

 

Also check your o-rings on the oil cooler----my leak was coming from there and the v/c.

 

Where is the o ring on this oil cooler located? And what you do to your v/c?

 

I'm sure he replaced the gasket on the rocker and entire rocker cover if needed/if the tube seals are leaking/and the oil cooler is located behind your oil filter.

 

Any one have steps to replace front and rear valve cover gaskets ?
What else should i replace while I'm at it? What kind of silicone should i use? Do i got to remove alternator?

 

All you've got to do is remove the upper intake manifold. So just disconnect any hoses or wires going to or from the manifold and the throttle body, and then remove the bolts holding the intake manifold in place and the clamp connecting the throttle body to the air intake. Then after that remove the coil packs and bolts on the valve covers and you should be able to lightly pry them up. Lightly scrape any remaining RTV and clean the surface well. Squeeze little dabs of permatex ultra black rtv in the sharp corners and steep angles of the valve cover and install the gasket. Then squeeze some lines of permatex ultra black RTV on the steep angles of the crankcase. Place the valve cover with the gasket on top and torque down to to the specs listed in this link: http://www.nissanclub.com/forums/200...ver-bolts.html
While you're down there I would also go ahead and do the spark plugs, and if you want you could also install the NWP spacer kit.

 

Doesn't sound too bad I'm going to try it over this weekend. is the diagram on the picture listing the numerical steps to tighten the bolts or to remove them?

Also, i have a misfire cylinder so im sure one of the spark plugs is getting oil. I'm going to replace it while im at it. Spark plugs were replaced a year ago. Think i should still replace all of them?

What does that nwp spacer do?

 

The diagram is listing the numerical order in which to tighten the bolts, but I guess you could loosen them that way if you want to. And I would go ahead and just replace all of the spark plugs while you're at it. And the NWP spacers just replace your old gaskets, except they're a lot thicker and use a higher quality material, which in turn keeps your engine cooler. With your engine running cooler, you loose less power. Plus it reduces heat soak. It gives an increase of 10 horsepower and reduces intake manifold temperature by 40 degrees on average. Here's a link to the NWP site: http://www.nwpengineering.com/Phenolic_Spacers.html
Here's a link to the instructions on how to remove the intake manifold: http://infinitihelp.com/diy/i/projec...eplacement.php

 

Dude thanks for the hook up isaacfall! Now im like so pumped up to do it! Any one know the part number of the valve rocker 6th gen front n rear along with gaskets part number?

Also whats the best spark plugs to go with? Double plat ? Ngk?

 

4" short ram intake setup should be next up

 

already got a custom air intake maybe a new air filter would be great.


Spark plugs??? which one is recommended at a high mileage?
The ones that do the best they can on this car.

 

Here's where you can get the 6th gen valve covers and gaskets with shipping all for $85. And as far as spark plugs, get the NGK laser platinum. You can get them on Amazon for $8 a piece with free shipping. Just make sure you enter in your vehicle make, model, and year so that you get the right size. Should be pre-gaped to 0.044

 

Oops, forgot to give you the link for the valve covers and gaskets, here it is: http://www.nissanpartswarehouse.com/...20%26%20VALVES

 

Am I also going to have access to the intake gasket?

 

Yes, the upper intake gasket will be right there when you remove the upper intake manifold.

 

dude thanks so much for link on how to replace the covers. Got them replaced along with spark plugs! saved myself money on labor . But spark plugs didn't help the misfire so that's next. and thanks for the website on where to purchase them!

 

ignition coils

 

I replaced the front 3 with OEM coils used and it still shakes so I got to put them on the back. So I'll see if that fixes.

I think the cAr starting to consume more gas. Could it be the spark plugs? They're NGK laser. I just replaced them like 3 weeks ago. Car has about 218,000 miles.

 

I recommend a brand new OEM genuine nissan Ignition coil or Hitachi brand at rockauto.com to be used on the rear. Try to replace the condenser ignition part #28351-89901 (courtesyparts.com)
http://www.courtesyparts.com/28351m-...ml?cPath=1956&

 

This might help a\nswer a few questions: https://maxima.org/forums/5th-genera...overs-pic.html

 

So idont know why my car wastes a lot of gas. Is it because ireplaced my bosch spark plugs with ngk and/or bad precat (rear)? Or coils in the back? Man this car wasting me a lot of money. I do have code for precat that's it