Proper use of Seafoam

Grog6

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  • Vehicle Details
    2x 1996 Cougars, 1997 Tbird 4.6's all.
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    Several people have mentioned sluggish performance, pinging, and generally blah performance.
    Our cars accumulate carbon, due to the EGR reflux, the leaky valve stem seals, and leaky rings, which stack up over time.
    The best cure for this, other than a brand new motor, is seafoam.
    Before you start, you need:
    Oil and filter for oil change
    1 can of seafoam

    To properly do this, you start with a warm engine.
    Pull the brake vacuum line off, carefully, while the car is running. stick it down into the can, barely sucking any into the line. Do not feed it enough to hydrolock your engine. you may have to manipulate the throttle a bit to keep it running.
    keep going until the can is half full, or slightly less, then dunk it in deep, killing the engine with the liquid. Please don't give it a cylinder full at once, that will be bad.
    Leave it for 15 minutes; Pour the remainder of the seafoam into the oil. The oil will come out black as hell. After 15 minutes of soak time, start the car.
    If you have done it correctly, when your car starts it will Smoke like a motherfucker, and fog the entire neighborhood. Warn your neighbors beforehand, you don't want the FD showing up. It smells like damp kerosene. It goes away quickly.
    Change your oil, all the crap that didn't go out the exhaust is in the oil.
    Take your car for a drive, and drive the rest of the carbon out. :)
     
    One note:
    If you get an egr flow message right after, it means a glob of carbon shit is plugging the orifice in the egr tube,between the two small lines from it to the egr sensor.
    The pressure drop across the orifice is how it measures flow, and if it pegs due to being blocked, you get an error. I cleared mine by loosening the top fitting and pouring chemtool b12 into the egr. This is not good for cats, but removing the egr tube is risky, they are unobtanium.
    You may have O2 sensor probs, depending on how much crap is stuck to them. It could burn off or not. Give it a few days before you replace them.
     
    That can help, I've heard. But when I cleaned and rebuilt injectors, it did not remove nearly as much as the chemtool B12 did. The chemtool made black crap drip out.
     
    That can help, I've heard. But when I cleaned and rebuilt injectors, it did not remove nearly as much as the chemtool B12 did. The chemtool made black crap drip out.
    I remember watching a video of someone explaining how good b12 is vs seafoam. The conclusion was one serves a good purpose in 2 strokes, and the other out preforms in just about anything else
     
    My 2 strokes got the carbon chipped out when I replaced rings/ pistons and often, the jug, lol.
    Never seafoamed a bike, or other car. But none had EGR, either.
     

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