Does anyone have this mod on their 4th gen? A bunch of people are doing it to their 5th gen cars, and I was wondering if there is a point in me doing it on my 4th gen.

 

isn't oil blowby when oil gets on your sparkplug???

 

I'm actually talking about this

http://forums.maxima.org/showthread....51731&t=418752

oil going out through your PCV and into the intake.

 

that is on a 3.0L...many 4th gens have done this just put the filter inline with the pcv and either get new filter when full.

 

A nice tight, well maintained engine should not have any "Oil Blowby".
There should be no reason to do anything with the stock PCV system.
All it does is let the crankcase breath nice clean air when/if it needs it.

 

Tim:
Why use a filter and replace it? Can't we just use the same thing that the people use on their 3.0??

njmax:
How do you figure that? From the FSM manual "This system returns blow-by gas to both the intake manifold and air cleaner. The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold."
It returns air from the crankcase (which has oil) to the intake manifold .. so wouldn't the air have atomized oil particles? Why are so many 5th gen have problems w/ this?

 

You can either use a fram G3 filter and replace or get the home depot compressor and drain when full, didn't mean to confuse you with that. Once you hook it up this way you will see all the oil the goes into the filter not the intake where and gets burned up and causes deposits.

 

Tim:

Thanks. I got the home depot compressor, and will attempt to do that mod. Does what njmax said makes sense? If I have blow-by should I be trying to fix the cause, and not just put a bandaid by using this mod?

 

All motors have some level of blow-by either past the rings or valves and will leave a nice oily film in the intake tract eventually.

 

I agree, but there shouldn't be a lot of oil in the gasses unless you have a worn engine. Last time I changed my PCV valve (120,000 miles) it was actually pretty clean. So if there's no oil sludge on the PCV valve, and the TB plate is dry, then there isn't any in your intake path. I've never seen an oil soaked TB plate on any VQ on this forum. Also most on here clean the intake with various products every 6 months or so. Honestly, I don't think there should be any reason to modify the PCV system of a well maintained VQ engine.

 

I have one installed. But it doesnt look all ghetto like the way the write up is done. Mine is under the cruise actuator. You cant see it in this pic, but thats the point.

 

Nice clean engine bay.

 

What does a motor being worn have to do with oil mist in the blow-by? The stock intake resonator is also called the oil seperator, to remove the oil from the blow-by gas.

BTW, i didn't say anything about oil sludge. I said there would be a slight film of oil that you can only tell was there if you removed the TB and looked inside your intake manifold and took a swipe with your finger if you have the stock resonator/oil seperator. Anyone with an aftermarket midpipe has found an oily film in their intake, guaranteed. If they haven't it's because the PCV system isn't operating properly. Also there is a Teflon coating on the TB to prevent oily build-up so it wouldn't be the best idea to check there for that. The baffle plates in the valve covers are there to limit the escape of the oil mist, but some will still end up in the intake tract.

 

Thanks, but I have been neglecting it lately.

 

What's the deal with the radiator hose? That doesn't look stock. Where does the line go from the T fitting in the middle?

 

Mine...

 

How often does yours fill up?
Jae

 

I get a good amount of oil in my catch. Though I rarely empty it. Im lazy.


i made that for my aftermarket temp gauge.