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Cleaning Carbon Deposits

Discussion in 'The Garage' started by 78Suburban, May 17, 2006.

?

How do you clean your carbon deposits ?

  1. ATF down carb throat

    4 vote(s)
    14.3%
  2. ATF through PVC vac hose

    1 vote(s)
    3.6%
  3. Seafoam in gas tank

    11 vote(s)
    39.3%
  4. Other.......Please specify, and do so clothed, not NEKKID

    12 vote(s)
    42.9%
  1. 78Suburban

    78Suburban 1/2 ton status

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    I've been doing alot of searching, and I'm wanting to clean my motor's carbon deposits, that are undoubtedly contributing to the dieseling problem it has.

    So what trick works for you?
     
  2. 4xcrazy

    4xcrazy 3/4 ton status

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    Here's something i have heard and tried,,,,,the question, and i have seen it before, is what does a cylinder head look like when you lose a head gasket,,,usually those cylinders are clean of all deposits.

    So what i was told, ( and can't remember by who now) was to take a spray bottle with water, and while the motor is running, spray the "mist" of water down the intake. Not enough to really make the engine run bad, or flood it out, just something to vaporize in the combustion chamber, and break crap loose.

    I have seen "friend" pour trans fluid down the carb,,,that was interesting, and brought out a certain neighbor, that well,,,basically ended up being "interesting":wink1:

    smoked out the eniter neighborhood....crazy P.........ly :haha:
     
  3. ryoken

    ryoken Puppy Fabricator Premium Member GMOTM Winner

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    water injection does wonders for carbon... take off the air cleaner and do the misty spray bottle trick..

    I've also heard Sea-Foam does well on carbon...
     
  4. merace19

    merace19 1/2 ton status

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    They make stuff just for this. Any carb cleaner will work better than water. Water does nothing. I have to pull down my race engine 2 or 3 times a year and i tried the water thing just to get idea on if it worked. Na. But brake cleaner or carb cleaner will get it out. Get the type thats in a pourable container(sea foam). pour about 1/4 cup into each runner of the intake so each piston gets same amount.rotate the engine by hand untill all the cylinders have opened the intake valves. Let set for 30 minutes or so then spray the intake with about a can of the carb cleaner. REMOVE the spark plugs and spin the engine over to get any excess out. Fire it up. Change oil soon as all that crap may have leaked past your rings.
     
  5. 3 on the tree

    3 on the tree 1/2 ton status

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    I have been doing the spray bottle trick for close to 30 years. I believe that it works well. All that black crap coming out the tailpipe aint unburnt gas!!!
     
  6. 1979jimmy350

    1979jimmy350 1/2 ton status

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    seafoam through the PVC hose will clean a lot of the carbon deposits out, you might have to use at least two cans if you have really bad deposits
     
  7. DieselDan

    DieselDan 1/2 ton status

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    Another Sea Foam user here. I was never one for "mystery engine potions" but I have used Sea Foam a few of times and felt an improvement.

    'Definately want to use it away from the neighbors though. I layed down a cload that wouldn't stop for about twenty minutes. :haha:
     
  8. jarheadk5

    jarheadk5 1/2 ton status

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    Sea Foam works - smoked out the neighborhood a few times this way...

    Water from a spray bottle also works - again, smoked out the neighbors a few times. Not as much smoke as the Sea Foam, but enough to know there was crap from the cylinders coming out.

    I haven't had a chance to try it yet, but GM's Top Engine Cleaner is supposed to be great.
     
  9. 78Suburban

    78Suburban 1/2 ton status

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    just checking.. I suppose I should use the same flavor of ATF that my th400 takes?

    I think I'll try ATF.......AND Seafoam in the gas tank.
     
  10. Emmettology 101

    Emmettology 101 3/4 ton status

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    I had a 94 Probe GT a few years back. I guess they were prone to carbon deposits and it was recommended to have a dealer "clean" it every so often. Had a friend, that at the time, was a Ford Tech. He said all they were supposed to do was spray Ford's crab cleaner in the TB(and in the vacuum lines) a few times at different RPM levels. And then really get a good amount in there and let it sit for a little while. Ford has a good carb/efi cleaner you can buy that foams. It worked well I guess. I know that cleaner would do a good job of cleaning other things also..
     
  11. rick88blaze

    rick88blaze 1/2 ton status

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    I did seafoam through my vacuum booster vacuum line on my '88 cherokee. It definetly made a difference and smoked out the neighborhood. :D

    I've got another can of it I am going to put through my K5 in the next couple of weeks. :D

    Rick
     
  12. 78Suburban

    78Suburban 1/2 ton status

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    I didn't even think of pouring Seafoam straight in like that.. pretty good idea :bow:
     
  13. rick88blaze

    rick88blaze 1/2 ton status

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    I got the idea from a thread on here that has a link to the full size bronco forums. Click HERE. :D

    Rick
     
  14. 5280k5

    5280k5 1/2 ton status

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    have never used seafoam, but have used the crap out of GM top engine cleaner at work. sucked it in through the intake, let it sit and go smoke out
    everyone on the road. if your engine is real bad we have even pulled plug and filled cylinders and done overnight soakdowns. either way, CHANGE YOUR OIL AFTERWARDS;)
     
  15. ryoken

    ryoken Puppy Fabricator Premium Member GMOTM Winner

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    I guess you've never heard of water injection and the side benefits to it.....
     
  16. sled_dog

    sled_dog 1 ton status

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    ever heard of steam cleaning? Add water to your engine = instant pressurized steam. Yes water works.
     
  17. ryoken

    ryoken Puppy Fabricator Premium Member GMOTM Winner

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    Indubitably....
     
  18. walla2k5

    walla2k5 1/2 ton status

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    Seafoam....Warm up to operating temp. Pour Seafoam in carb,shut of engine and let it set for 1/2 hour.Fire it up,let it smoke out the neighbors,you're good to go...:D

    ATF will un-stick a lifter..
     
  19. diesel4me

    diesel4me 1 ton status Premium Member

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    Carboned up..

    I've used the water trick too--it works well to remove carbon fron the tops of pistons and the heads of the valves(the side in the combustion chamber anyway)..if the valves are caked up under the heads on the stem side(common dilema in many engines),it will do little or nothing for that---ditto for the intake runners and head ports..thats where chemicals are needed..

    I've used Marvel Mystery Oil and it works about as good as any other product..Berryman's is good too,and ATF and carb cleaner work too..have never used "Sea-Foam" yet,but I'm sure its similar to GM's "Top Engine Cleaner"..all will make more smoke than a dragstrip burnout area on sunday afternoon--!---so don't use it if your neighbors will call the cops on ya!..:doah:

    The key is to pour it down the intake slowly,revving it only enough to just keep it from stalling..then "drown" it out by pouring the last 1/4 of the can a in rapidly so it stalls--then let it soak for a half hour or more..you might foull the plugs,and have remove them,and wash them off in gas before it will fire up again..once its running,after a few moments you can race it several times to blow the carbon out the tailpipe..

    I once sold a nice looking woman with a Mazda 626 a can of carb cleaner at a parts store I worked at..a few minutes later,we heard a loud explosion in the parking lot,followed by a "thud" ,and I saw something silver bounce in the parking lot..!!:eek1: ..we all ran out to see what happened..

    She had sprayed the entire can down the carb throat with the engine off!!--(just as her "mechanic" boyfriend had instructed her to!:rolleyes: )---then got in and "fired" it up,literally!...it blew the muffler right off,and it landed 50' away,just missed another customers prized 64 Mustang convertible!:eek1: ....best laugh I had in months!..:bow: :D
     
  20. JOEDEZZY

    JOEDEZZY 1/2 ton status

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    I used to have an SRT-4 (yeah i was a ricer) I still have the water/methanol injection kit that I put on there, I'm seriously thinking about putting it on the K5, only down side to it is that I can not let the resevior tank run out of water, but anyway to my point, I injected windsheild washer fluid through it when I had it on my car, you have to make sure its the non detergant type, it kept everything running good and clean, heres a link to the system I have http://www.coolingmist.com/ maybe you guys could try that and see how it works.
     

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