Jump to content

Long Term Carbon Deposits

Back in a Bowtie
 Share

Recommended Posts

Back in a Bowtie Enthusiast

Back in a Bowtie

Posted
Posted

How’s everyone’s intakes doing?  I’m approaching 80k miles and weighing doing a mechanical cleaning.  I think a Crc or Seafoam is out of the question as I had a cat issue when I did it at 30k and haven’t done it since.  Trucks running fine.  Share any deposit pics you might have with mileage.

  • Replies 93
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

CombsL83
CombsL83

So nobody with a catch can wants to post pictures of their valves but are 100% positive that theirs are in better condition than non catch can engines. Got my laugh in for the day 

Jacoby
Jacoby

Those look like shit. 

3tspapat
3tspapat

Looks aren't everything. That is why the world is full of ugly people still. 

Posted Images

Paintor Enthusiast

Paintor

Posted
Posted

If you don’t see the oil in your plastic intake tube (between air filter box and throttle body) from the valve cover breather hoses, you are fine.

 

You can pop that off pretty quick to see if your truck has been eating oil coming from valve cover hoses. Causes detonation, poor fuel economy, carbon deposits on valves and heads. 

  • Like 1
Jacoby Enthusiast

Jacoby

Posted
Posted
2 hours ago, Centex14 said:

After seeing these I'm even less concerned about running a catch can.

 

Those look like shit. 

  • Like 4
Centex14 Enthusiast

Centex14

Posted
Posted

Looks aren't everything.  Truck still gets great mileage, doesn't burn oil, doesn't knock, tuner didn't see any issues in the logs, plugs look good.  I see no reason to put a can on.  I can spend that money elsewhere.

  • Thanks 1
UnlimitedMatt Enthusiast

UnlimitedMatt

Posted
Posted
2 hours ago, Centex14 said:

Looks aren't everything.  Truck still gets great mileage, doesn't burn oil, doesn't knock, tuner didn't see any issues in the logs, plugs look good.  I see no reason to put a can on.  I can spend that money elsewhere.

Fair enough.  But think about how much better it *could* be if your values were clean...

  • Like 2
3tspapat Enthusiast

3tspapat

Posted
Posted

Looks aren't everything. That is why the world is full of ugly people still. 

  • Like 3
Jacoby Enthusiast

Jacoby

Posted
Posted
3 hours ago, Centex14 said:

Looks aren't everything.  Truck still gets great mileage, doesn't burn oil, doesn't knock, tuner didn't see any issues in the logs, plugs look good.  I see no reason to put a can on.  I can spend that money elsewhere.

Putting a can on at 130k miles is about as pointless as those pictures u posted. A catch can is a preventative measure not a cure

JONBLARC7 Enthusiast

JONBLARC7

Posted
Posted

Show me a picture of a valve with 130k miles with a catch can the whole life of the motor.  I bet it looks just as bad.

  • Like 2
Mike GMC Enthusiast

Mike GMC

Posted
Posted

While I agree those pics don't look good, I would have imagined much worse at that mileage with no can.  The valves on my 08 CTS looked much worse at less than half that mileage.  I did a mechanical cleaning and added a can.  At 110k miles the valves looked slightly better than those pictured, but MUCH better than they did at 60k when I cleaned them and added the can.  At 60k, mine looked like the horror story picture you see posted as an add for cans.

Centex14 Enthusiast

Centex14

Posted
Posted

Forced induction is a different story and I'll agree those need a can. Naturally aspirated it's no where near as important as the internet makes it out to be. But you do you. I wasn't worried about it before and I'm most certainly not worried about it now. 

Centex14 Enthusiast

Centex14

Posted
Posted (edited)
3 hours ago, Jacoby said:

Putting a can on at 130k miles is about as pointless as those pictures u posted. A catch can is a preventative measure not a cure

OP asked about long term carbon deposits. I have pictures of my valves at a 130k miles which is long term. Pretty certain that's the point of this thread. 

Edited by Centex14
  • Like 2
  • Thanks 1
davester Senior Enthusiast

davester

Posted
Posted

Well, my '04 Sierra w LQ4, when I changed the knock sensors at 120k miles, the bottom of the intake manifold was filled with oil (as in, while removing it, it tilted a bit and oil spilled out, and then I carefully dumped the rest of the oil in the manifold in a bucket), and the intake ports were coated with carbon.

Jacoby Enthusiast

Jacoby

Posted
Posted
1 hour ago, Centex14 said:

OP asked about long term carbon deposits. I have pictures of my valves at a 130k miles which is long term. Pretty certain that's the point of this thread. 

Yes he did and your pics provided more than enough proof that a catch can is needed. So I say thank you 

Doublebase Enthusiast

Doublebase

Posted
Posted

Those valves don't look reassuring to me. And 130,000 miles? I mean, I thought 130,000 miles wasn't supposed to be high mileage anymore? Those valves look like something I'd expect to see from a carbureted motor at 130,000 miles, from someone who never changed the oil and beat the tar out of it.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • bwiese
      upgrading speakers on 2026 std cab WT...

      By bwiese · Posted

      I don't wanna do major surgery/upgrades, behind-the-dash work, add amps, change radio etc. on my '26 std cab WT. On the WT, it has the base 7" IOR infotainment setup, and only two speakers (doors). Since I listen to classical, looked around for speakers that do well and dug thru reviews. Two-way speakers were found to be better than 3-way. So I've ordered a pair of  Infinity Reference REF-9632IX 2 way speakers.  [These may  or may not have been discontinued / succeeded by the 3-way ...9633 ones.]    These speakers are lauded for 3 ohm and 94db sensitivity spec so they'll work well for ordinary base car radios without amps and offer better performance (quality,  strength) than  default base paper-cone speakers. They'll be installed in a few days and I'll let y'all know what I think. Bill W San Jose      
    • RyanbabZ71
      RyanbabZ71's 2019 High Country

      By RyanbabZ71 · Posted

      Thanks!   Changed out the rear shocks today to Bilstein 5100s.  So far feel much better. The stock Rancho were wore out.  Lots of heavy hauling (2 moves, home renovations, etc).  Next up is new BFG tires Monday.  Cant wait the current tires have little to no wet traction and are super loud (hum)    
    • Snowcamo
      No high speed fans...

      By Snowcamo · Posted

      Ok, I got the all the codes. What do you all think would be a place to start?
    • Chuck FB
      Correct way to service 2024 l8t allison trans?

      By Chuck FB · Posted

      How about I just point to the factory pans stand pipe little drain plug and claim its a pan with a real drain plug !. I just couldn't swallow the fact that a Dorman pan which at this point is probably the only pan out there that fits the gas version truck cost that much up here in Canada so I decided initially anyway to skip it and see what I thought of pulling the pan method and down the road if I felt inclined enough then I would either install a drain plug kit in the factory pan if there is enough room for it, or have a bung welded onto it, or put an aftermarket pan on. The thing is if the pan is not pulled then the magnets in the pan can't be inspected and cleaned or if wanting to change out the filter. However of course it certainly would make the job easier to be able to drop the oil first before having to handle the pan if dropping the pan that go around was the goal.    I knew a guy locally that was doing custom field spraying years ago with a pickup pulling a ground driven sprayer, I believe it was a GM pickup with an automatic trans. He had a drain plug in his pan and would drop the oil out of it once a week and top it back up through the dipstick tube to keep refreshing a portion of the oil often and that made the transmission last far longer than had he done nothing. Soft fields pulling 500 gallons of water at the start of each mixed up sprayer tank batch and in low range sucking along. I imagine he got some tips from other custom sprayer outfits doing the same thing at the time and learning from their blown up tranny mistakes. Transmissions then had no lock up converter so would cook the crap out of the fluid slipping that much and it would not have been synthetic fluid either. 
    • KARNUT
      Gas Prices

      By KARNUT · Posted

      3.39 Kroger’s in Montgomery Texas. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...