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Old 06-07-2012, 08:24 PM
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Sea Foam How to:

Been meaning to share this with you guys for a while. These motors have an inherent issue with collecting oil in the intake, catch can will prevent this but for you guys that have not gotten one yet or bought the vehicle used with some miles on it I consider this process a must. The result of having this oil here is that it will make its way to your combustion chamber and cause build up as well as reduce performance quite a bit, due to the build up and due to the fact that the oil ends up mixing with the air/fuel mixture where it basically reduces your octane rating and you will have pronounced detonation issues.
Easy check to see if you have any oil build up in your intake is to take a peak through your throttle body, use a flash light, part on a flat surface and see if you have a puddle in the back of the manifold, if you do, then continue reading



How to SeaFoam your ride
Seafoam is multipurpose, 100% petroleum product you can pick up at any local auto store (napa, advance, autozone, etc). it is used to clean carbon buildup from your engine, clean your injectors, clean your oil and a whole lot more. to familiarize you with the products, this is what i am talking about:

Seafoam:



Seafoam Deep Creep:


okay now that you all see what seafoam is, let's talk about what it's used for:

Uses of Seafoam

i would first like to state for the record that seafoam is NOT a power adder. all seafoam does is clean out the gunk inside your engine and injectors. this will do nothing more than restore any horsepower/fuel economy you have lost due to years of dirt and grime inside your engine. any power you pick up along the way is because it has just been supressed by the filthy engine and is now free again.

if you are losing power and mpg due to carbon buildup, if you are experiencing pinging and if you're having trouble passing emissions test, seafoam may be your answer (yes, seafoam will actually reduce your emissions if carbon buildup is causing dirty exhaust fumes!). feeling the pinch at the pump lately? well, seafoam can be used to pick up a few extra mpg you have lost over the years and reduce or elimiate your engine ping by cleaning out your cylinders!

What You Need to Seafoam Your Engine:

in order to maximize your engine's fuel economy and performance, you should do a full engine treatment. in order to do so, you will need a few things:

- 2 cans of seafoam (1st picture above)
- 1 can of seafoam deep creep (2nd picture above)
- flat head screwdriver
- pliers
- 1 long, skinny funnel

okay, now that you have all the necessary tools to complete the job, let's talk about how to use seafoam:

How To Seafoam Your Car:

Part One: Injector Cleaning

this is the easiest part of the process. simply drive to the gas station and completely fill up your tank with your usual octane (87 for the 2.5's and 89 or more for the 3.5's and Hemi's). take 1 of the 2 cans of seafoam in the requirements above. this can of seafoam will be poured directly into your gas tank. now, seafoam makes a great product but they didn't think too hard when they designed their can. you need a funnel in order to dump it into your gas tank. do not try to be cool and try and beat gravity by jamming the can into your gas tank. i tried that. all i got was a car that smelled like gas and wasted seafoam on the ground. take the long skinny funnel, put it in your gas tank, shake the can of seafoam up and pour the entire can of seafoam into the tank. then, take your car for a nice ride so the seafoam swishes and mixes in your gas tank. the seafoam will clean out your injectors nicely. try and run this tank pretty low before filling up so you don't dilute the mixture with more gasoline. this way, you get the maximum cleaning power of seafoam.

Part Two: Cleaning Your Oil System

seafoam is to be added directly into your crankcase in order to cleanse the oil. yes, you heard me, you're pouring a foreign mixture directly into your engine oil. this can be scary for newbies. never fear, seafoam is 100% petroleum. it is as harmful to your engine as water is to your skin - not harmful at all. the correct measurement for seafoam is 1.5 ounces per quart of oil in your crankcrase. simple math tells us:


NOTE: i recommend pouring the seafoam into your oil when the car is cold. i would not recommend pouring a room temperature liquid into 200+ degree oil after the car is hot. last thing you wanna do is shock your valve springs.

run the seafoam in your oil for NO MORE THAN 250 miles! seafoam is very agressive. your next oil change will be black as satan's heart and likely thicker than usual. i would not recommend running this oil very long in the car as your oil filter is going to have quite the time on its hands and the oil won't be in the best of shape afterwards. i'll say it again. change your oil less than 250 miles after you put seafoam in your crankcase! i personally recommend running it 100 miles, then changing your oil. that should be plenty for the seafoam to get most of the gunk out.

Part Three: Top End Cleaning

here comes the fun part: cleaning the engine internals! NOTE: park your car in a VERY WELL VENTILATED area for this step as high amounts of toxic fumes will be pouring out of your car.

as you recall, we have half a can of seafoam left. this half a can will be used to clean out your cylinder banks. in order to do this, we need to locate a vacuum line to directly feed the seafoam into the engine. the favorite vacuum line is the brake booster line.

the brake booster is the big, black saucer shaped object behind the brake fluid holder against the driver's side firewall in case you can't tell by the picture.

we will be sucking the seafoam into the brake booster hose marked by the red arrow. (note: some people prefer to suck the seafoam in through the PCV line. this is also acceptable, although i have never done it.)

first thing you wanna do is start the car and let it warm up until the engine reaches closed loop. basically, start your car and wait for the engine to warm up to normal operating temperatures (5 - 10 minutes depending on outside temperature). after the engine is nice and warm, turn the car off. now we're going to disengage the brake booster line.

for this, you may need a pair of pliers and a flat head screwdriver. there is a little metal clip holding the brake booster hose to the brake booster. you want to take a pair of pliers, compress the clip and slide it down the hose a few inches. now that the clip is out of the way, you need to disengage the brake booster hose. this can be a bear if you've never done this before. my car had 80,000 miles on it when i seafoamed it and that sucker was stuck on there tight (it's a vacuum line, it's glued by high pressure). you may need to take the flat head screwdriver and jam it into the vacuum line and wiggle it off the brake booster. this may take a while. it took me a lot of pressure to get the hose off the booster. you may have to pull pretty hard.

once the hose is off, you're gonna want to find a small funnel that will fit into the brake booster hose. i do not recommend simply jamming the hose into the seafoam and letting the engine suck it up. this makes it very hard to control the amount being sucked up and could flood the engine far too fast causing it to prematurely stall out.

now that you have a funnel jammed into the brake booster hose, start the car. you'll notice your rpm's are very high, likely around 2000-3000rpms. this is because your brake booster hose being disconnected is causing a massive vacuum leak. you'll be able to feel the engine sucking air down the funnel.

at this point, you have half a can of seafoam left (8 ounces). you should, in your head, divide that into three equal parts. you're going to want to SLOWLY pour the first two thirds of the seafoam left in the can into the engine via the funnel. the engine will start to sputter and choke as you pour in the seafoam. you DO NOT want your engine to stall out. go as slowly as possible pouring the seafoam into the engine as necessary so the engine does not die. do this for the first two thirds of the mixture. with the final third of the seafoam, quickly dump it down into the funnel. the idea here is to stall out the motor, suspending the remaining gulp of seafoam in the cylinder banks (don't be alarmed if your engine bay is smoking the entire time this is happening). if your car does not stall, quickly run and turn off the key.

do not start the car for at least 15-20 minutes. we want the seafoam to soak in the motor good and hard to get all that nasty carbon out of the engine.

while the engine is sitting and soaking, with the key out of the ignition of course, get that bottle of seafoam deep creep i told you to buy.

seafoam deep creep is to be sprayed inside your throttle body. disconnect your hose running to the throttle body so your throttle body blade is showing. get a friend to push down on your gas pedal so the throttle blade opens. if you don't have a friend at your disposal, a brick or something will do just fine to hold the gas pedal down, anything to keep the throttle blade open. again, your engine is to be OFF during all this.

once you can see inside your throttle body opening, spray seafoam deep creep into throttle body, fully soaking the blades, the bottom, top, and up and down into the intake manifold behind the throttle body. use a good amount of seafoam. don't be too conservative, but the whole can is far from necessary. use your judgement. get it in there nice and deep but there's no need to flood anything!

reconnect the throttle body hose, the brake booster hose, the clip back on the brake booster line and anything else you may have disturbed during the seafoaming of your car.

now we will just wait for the remaining time to pass before you can start your car back up.


okay, now that 15-20 minutes have passed, it's time to start your baby back up. this may be a challenge. the engine is flooded with liquid so it may be a lot harder to start that usual. this is completely normal. once your car is started, let it idle for a good 10-15 minutes. your car is likely to smoke profusely. if it does not, lightly tap your gas pedal. do NOT rev the engine like a madman. when i say lightly tap, i mean gently tap the rpm's up to no more than 1500. a blip is all that is necessary. if it doesn't smoke too badly, it's because your engine just wasn't that dirty.

after the car has been sitting idling for 10-15 minutes, take the car out for a spirited drive. the key word here is spirited. you want to rev your car nice and high and get all that seafoam into all the valleys of the engine. this is the perfect excuse to completely run the balls off your car. if you look behind you, you will likely see a long trail of blue smoke dusting out the entire highway. say good-bye to the culprit carbon buildup killing your power, gas mileage and causing your engine to ping.


congratulations! you have successfully seafoamed your car. be amazed as your car revs faster, your gas needle moves slower, your idle is smoother

NOTE: seafoam is O2 sensor safe and will not damage your spark plugs or catalytic converters with responsible use. this means as long as you're not seafoaming your car constantly and using far above the recommended dosages, you should be fine. it's probably good to do this process every 10,000 miles to keep your car in tip-top shape.

NOTE:
I have copied this text and pictures from a well written post on the LX forums written by Chuckwagon85 there, so all credit will go to him for the write up.
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Last edited by diablotoona; 06-08-2012 at 06:10 AM.
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Old 06-07-2012, 08:36 PM
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Good stuff!


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Old 06-07-2012, 09:08 PM
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This guy is the TRUTH!!!!
And that's the way the cookie crumbles
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Old 06-09-2012, 08:16 AM
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Going to do this right away and install a catch can as I have over 100k on mine with no cc installed.
This was just what I was looking for. Thanks!!


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Old 06-09-2012, 03:39 PM
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Thanks for the post Johan! I copied it into our How To section - http://www.cherokeesrt8.com/forums/s...ad.php?t=65069.

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Old 06-09-2012, 08:20 PM
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Great write up buddy! Keep up the good stuff man!
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Old 06-09-2012, 09:38 PM
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Great advise!!! Thank you, I'll be doing this than installing a cc!
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Old 06-10-2012, 09:20 AM
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Thanks for the info . Only one question Some say change the oil right away some say drive it for a bit 200-250 like you mentioned ?
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Old 06-10-2012, 09:22 AM
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Good info! Thanks for sharing!
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Old 06-10-2012, 11:59 AM
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Johan quick question. I removed my intake to clean it up and give it a mild port job and as we discussed, I saw my intake valves almost totally covered in hard crusty carbon. I decided to spray a small amount of seafoam directly on the valves enough to cover the carbon covered areas and am now letting it soak in. Is this going to cause me a problem or should I just skip one of the steps you just mentioned? I planned on using some paper towels to soak up the majority of the solvent before I buttoned everything up.
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