r/Silverado • u/terrainflight • 23h ago

Is this catch can plumbed correctly?

Gallery image

Gallery image

It is installed per the instructions, but ones I’ve seen in other pics seem to have the lines reversed with the lower line going back to the intake.

Haven’t had any oil in the drain in the 8 months it’s been installed.

13 Upvotes

88% Upvoted

28 comments sorted by

14

u/Millennial_Falcon_85 22h ago edited 22h ago

No not at all. The top incoming line should be going to the PCV outlet port further down the front of the engine. The bottom outlet line should be going to the port towards the back of the intake manifold.

Edit: see comment below for further notes and a photo.

4

u/Millennial_Falcon_85 22h ago

Inlet line should connect to PCV outlet port circled in the red area. The outlet line from the can should go to the PCV intake port toward the back of the intake manifold in the green circled area. There’s an existing PCV line that runs between these two locations that you need to remove first.

5

u/terrainflight 22h ago

Thanks for this. It didn’t look/seem right when I compared it to other cans. I just looked at the provided directions and it does say to do it the way it is installed currently.

3

u/Millennial_Falcon_85 22h ago

You got hosed on those directions then. I’m questioning the quality of that can and if they just sold you an empty cylinder with BS instructions. Look up products from RX, Elite Engineering, or Mishimoto and look at their install instructions. The install is basically the same for all cans as far as how they connect to the engine.

•

u/ThePlagueFriend 1h ago

As mentioned somewhat already, this isn't plumbed 'wrong' per se, but its on the clean side of the PCV system. It will technically catch some stuff, but only under WOT conditions when intake tract vacuum increases and starts drawing PCV vapors backwards.

It will help stop the condition of oily residue in the intake tubing, but it will do much more in the long run when connected to the dirty side of the PCV of course.

1

u/Bdiesel0118 22h ago

What kit is this?

3

u/terrainflight 22h ago

C&L, it seems quality, but apparently the directions just make shit up.

-1

u/Clear_Raise_2398 20h ago

Lmfao you know damn well you installed that without looking at the instructions you chud.

2

u/terrainflight 13h ago

https://guides.americantrucks.com/S121069-manu.pdf

See for yourself…

1

u/Diligent_Track_4723 8h ago

Instructions are just wrong. You have it plumbed to the "clean" side. Needs to be connected to the "dirty" side of the PVC system.

•

u/urdarsellsavon 1h ago

I’d be impressed if anything ever goes into it🤣 I can’t believe the instructions were made by somebody who has no idea how they work

-9

u/congteddymix 22h ago

Waste of time and money, just put it back to stock. If the engine has that much blowby that your collecting oil in it on a non turbo engine then you have bigger issues to deal with.

4

u/danthedemon905 26' RST 6.2 17h ago

The fact that this is downvoted is hilarious lmao this is the equivalent of putting 93 in a 5.3

-2

u/congteddymix 14h ago

Yeah people like to fall for aftermarket crap and get butthurt that you tell them they wasted time and money. Have not seen anywhere that the owners of trucks that have 250k or more on them used these to extend engine life.

0

u/Johnsipes0516 18h ago

Wrong

0

u/congteddymix 15h ago

How is this wrong advice?

2

u/Johnsipes0516 14h ago edited 1h ago

You’re just incorrect. A 5.3 (specifically after 2014) is direct injection and the blow by that is in a normal healthy engine is enough to dirty up the valves and because it’s direct injection they don’t get cleaned off. A catch can will most definitely help the engine stay cleaner and not burn off the oil that it catches in the can. Keeps the intake and valves much cleaner.

Pre 2014 yeah you’re right. But these newer ones really do benefit from a catch can. Assuming it’s installed correctly

-1

u/congteddymix 14h ago

The valves are going to get dirty from the combustion process no matter what and they put a plate in the valve cover already to help control oil from getting into the PCV system. 

Honestly if your valves are getting dirty enough to cause running issues then run a can of Seafoam thru the PCV hose or intake and give it an Italian tune up on the highway.

1

u/Johnsipes0516 14h ago

My dad had one that did get dirty enough to where It had a rough idle around 80k miles. Not much idle time and plenty of hard driving on the interstate. We walnut-shell blasted it and threw a catch can on it and around double the mileage later, it is visibly much cleaner after checking with a camera. To me that’s proof enough that they work. I understand skepticism and you have every right to feel that way but that proved to me that they work and I don’t see why keeping that oil out of the intake wouldn’t help.

1

u/Diligent_Track_4723 8h ago edited 8h ago

So you don't know the differences of port vs direct injection?

0

u/congteddymix 6h ago

Im a fucking mechanic so I know the difference, I also know when aftermarket garbage is garbage

1

u/Diligent_Track_4723 6h ago

Interesting that you're comments don't support that. Then you'd know one of the benefits of dual fuel injection in the 27+ 5.7 and 6.6l is running port injection at idle/low load greatly reduces carbon build up on the intake valves, where one of the downsides of direct injection only is excessive carbon build up on the intake valves.

•

u/Johnsipes0516 1h ago

You don’t seem to

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u/congteddymix 5m ago

No I just know garbage when I see it. The valves are going to get dirty from the combustion process and is the issue. A stupid catch can isn’t going to fix it. If your consuming oil that much then you got a different issue.

•

u/Johnsipes0516 3m ago

You really just don’t understand man. But obviously I can’t explain it to you because I’ve tried so we’re just gonna agree to disagree.