Forced Induction Superchargers | Turbochargers | Intercoolers

Is this normal in a catch can ?

Thread Tools
 
Search this Thread
 
Old Apr 6, 2014 | 11:57 AM
  #1  
zapp109's Avatar
Thread Starter
TECH Enthusiast
iTrader: (13)
 
Joined: Jan 2011
Posts: 632
Likes: 0
Default Is this normal in a catch can ?

Just emptied my catch can and this is what is coming out. Is this normal? I have a mighty mouse can with 2 -8 fittings off my valve covers and 1 off the valley cover.

Reply
Old Apr 6, 2014 | 12:45 PM
  #2  
95bowtie's Avatar
TECH Enthusiast
15 Year Member
 
Joined: Mar 2010
Posts: 519
Likes: 2
Default

Its supposed to catch oil and moisture so yes
Reply
Old Apr 6, 2014 | 06:20 PM
  #3  
ujslost2's Avatar
Launching!
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (27)
 
Joined: Jul 2004
Posts: 218
Likes: 0
From: Alabama
Default

Yes looks like what I get. Do you run e85?
Reply
Old Apr 6, 2014 | 06:37 PM
  #4  
oscs's Avatar
8 Second Club
iTrader: (19)
 
Joined: Jan 2013
Posts: 3,903
Likes: 6
From: Cypress, TX
Default

Originally Posted by zapp109
Just emptied my catch can and this is what is coming out. Is this normal? I have a mighty mouse can with 2 -8 fittings off my valve covers and 1 off the valley cover.

It's a mixture of motor oil/water (moisture) has your car been sitting for awhile? You shouldn't see that on a regular basis.
Reply
Old Apr 6, 2014 | 06:50 PM
  #5  
93camaro_zzz's Avatar
12 Second Club
iTrader: (13)
 
Joined: Nov 2005
Posts: 2,211
Likes: 3
From: San Diego, Ca.
Default

This is what came out of mine yesterday. Looks like alot of the same ****. Definitely freaked me out for a second, because so much of it was water. But turns out it is normal. And mine had been sitting for a little while without starting.

Reply
Old Apr 7, 2014 | 07:22 AM
  #6  
Ryans99ls1's Avatar
TECH Fanatic
15 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Dec 2007
Posts: 1,594
Likes: 271
From: OH & MI
Default

Thats pretty normal but damn thats gross
Reply
Old Apr 7, 2014 | 07:58 AM
  #7  
sw44's Avatar
Teching In
 
Joined: Mar 2014
Posts: 1
Likes: 0
Default

That looks like it could be an algae growing in the catch can. I have seen it in industial oil tanks where water accumulates in the bottom of the tank (oil floats on top). The agae lives in the water layer and eats the hydrocarbons as food. That is disgusting. I need to go drain my catch can.
Reply
Old Apr 7, 2014 | 09:44 AM
  #8  
Sarg's Avatar
TECH Addict
iTrader: (6)
 
Joined: Aug 2011
Posts: 2,838
Likes: 3
From: Atlanta, GA
Default

Mine sits more than anything as it is still only being driven like once a week and mine is tons of water with a hint of oil and fuel. Nasty stuff...just think that would be going back through the motor ordinarily.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Apr 7, 2014 | 10:01 AM
  #9  
427's Avatar
427
TECH Junkie
iTrader: (3)
 
Joined: May 2003
Posts: 3,898
Likes: 6
From: Clayton, North Carolina
Default

In a vented loop system like the factory has the water goes away once temperature is reached, it vapors off into the intake and gets wasted like humidity in the air. In a catch can system the flow goes both ways and moisture cannot be controlled. This will cause moisture to collect in the can making the mess you see.

Kurt
Reply
Old Apr 7, 2014 | 11:58 AM
  #10  
willizm's Avatar
9 Second Club
iTrader: (10)
 
Joined: Apr 2009
Posts: 1,230
Likes: 3
From: Joliet,IL and Las Vegas 50/50
Default

Mine comes out looking like baby puke. Much like the pics above.
Reply




All times are GMT -5. The time now is 08:08 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE