[KenedyTXTitan]

^^ Yikes, I'm thinking I would have removed the TB. I'm not sure if the procedure on the 2nd gens is the same as the first, but I'd try the pedal reset procedure for the ECU and the throttle position relearn after moving the throttle plate.

Shes good.. U can move that plate all day long just gotta make sure ignition is off....

Im seriously thinking about drilling a hole above a runner so the camera will have a straight shot down to the valve.. Will tap the hole for a bolt so I can inspect regularly..

 

[KenedyTXTitan]

Check this thread out.....

https://forums.nicoclub.com/intake-valve-and-port-pictures-t612859.html

 

[KenedyTXTitan]

More good info...

https://www.enginebuildermag.com/2015/01/direct-injection-engines-carbon-deposits/

 

[LA02MAX]

Shes good.. U can move that plate all day long just gotta make sure ignition is off....

Im seriously thinking about drilling a hole above a runner so the camera will have a straight shot down to the valve.. Will tap the hole for a bolt so I can inspect regularly..

In the VQ35 world, I've seen several people ruin throttle bodies even when unplugging the battery before moving the throttle plate. Just my personal experience and not something I'd be willing to gamble with

 

[LA02MAX]

Also the BMW guys use walnut blasting at pretty frequent intervals on their DI engines, and the valves come out looking like new. You'd need to fashion some sort of shroud that fit over each LIM runner to do so, but that shouldn't be too hard.

https://www.1addicts.com/forums/showthread.php?t=1437656

 

[KenedyTXTitan]

Based off all im reading I think I will wait until I get the deposit symtoms then just pull the intake and manually clean...

Seems like we are good until about 100k...

 

[Rob J]

Kenedy



Direct injection does squirt gas or additives onto the intake valve. This product won't work.

Port injection does this. Not DI.


Sent from my iPhone using Tapatalk

 

[LOFT]

I never gave one thought for my trucks but do have one in my Challenger, it collects about 3/4-1 inch of oil in the cup every 1000 miles. If you’ve ever seen an engine tear down comparison of a can vs a non can, you’d be amazed at how much cleaner the entire valvetrain and intake is. No, they do not void a warranty as they don’t alter anything and if you had to take the truck in for repair you’d simply remove it for that period of time and they’d never have a clue it was ever there. I had one on each bank of my Mustang Coyote engine and you know who placed them there? They were put there by Rousch Racing when I trailered the car there to have the engine done, Nissan techs will never know a fraction what that shop knows. What a great experience it was going there.

Clint

Did you put a new catch can in your 2020? If yes, what system did you use? I’m looking to add one to my 2020 NV 3500.

 

[Clint]

No, I did not but will look into it.

 

[jramsey77]

Has anyone had issues with the carbon build up on their Titans? Can anyone take a picture to show where you should spray the intake cleaner spray? Thanks.

 

[4mula1fan]

The cleaner does nothing. There is a post of blasting it off with walnut shells.

 

[busemans]

you can google cell phone boroscope and get one that plugs into your cell and is small enough to go through a port on your intake manifold. that big inspection camera is way to thick to make any tight turns and is more similar to a sewer pipe inspection camera, or for looking in large things. just get a small 20 dollar boroscope from amazon for your phone, they are really a hell of a deal for the cost.

i have one i bought, probably 7 or 8 years ago, just messing around. it showed up and the cord is five foot in length and the thickness of your cable for charging your phone. the lens head is a hair thicker and it goes down ports on engines and through runners very easily because it is very flexible.

we use 10-15k dollar boroscopes at work for inspecting oil passages on helicopter transmissions, gearboxes, and looking into the hot and cold sections of turbine engines for damage or contamination. they break very easily because the heads are steerable to make very tight turns in the passages and let you zoom and video/snap pictures. that 20 dollar one, minus the steering, does all the same stuff. its not a 1 or 2mm head, maybe 4mm but that's pretty good for anything us home guys are doing

 

[gweasel77]

Idk about the new VK's but I run an oil catch can on my '05. I've had it installed for yrs and it helps IMO.

I definitely won't call them "snake oil".

Mine works great and I empty it out every time I do an oil change.

I have pic's of what comes out of mine after about 4-5K miles.

It's also good maintenance to replace the PCV valves every so often.

 

[matt20]

Just a thought, and correct me if I'm wrong. Can't we just plug the hose going in to intake and just let the pcv hose vent to atmosphere? No need for a catch can, and not gumming up valves?

 

[4mula1fan]

The system needs manifold vacuum to work.

 

[busemans]

Yup. That vacuum from the intake is what releases the excess air pressure from the block so you don't get leaks at each seal and o-ring. That's why when people don't keep up on replacing their pcv valves, the engine runs bad and then starts leaking oil from different places.

That vacuum pulls the little ball up in the pcv when the engine is running so the heated expanding air in the crank case goes somewhere. That's why the easy check for a malfunctioning pcv valve is to shake it. No rattle means the valve is stuck open or closed. Rattle means everything is working properly

 

[bluovalguy]

It may be snake oil, maybe not. I’m not a huge fan of DI engines for this reason and I tend to think any oil that’s caught by the can is oil/ build up that didn’t go back to the valves so it can’t be that bad.

I have a JLT can I bought for my 3.5 EB Ford that I took off when I traded it. I’m gonna get some extras hose this week and route it to work on the Titan.

Is it a waste of time, maybe. Will it hurt anything, nope. And since I’ve already spent the money a year and a half ago, I’m not out anything now so why not.

 

[busemans]

If I had one laying around, I would put it on

My son bought one for his Veloster since they are di, also. He showed me the first time he dumped it out. It catches stuff so it's doing something

 

[matt20]

So, can we get rid of the pcv valves and find a barbed fitting with same threads and just vent to atmosphere and plug the hose going into intake?

 

[4mula1fan]

No.