Sea foam which vacuum hose for 4.0L SOHC?

[jweb1369]

I can't figure out which vacuum hose to use to put sea foam in my truck. I have a 1999 explorer sport 4.0L SOHC. Any ideas? Please help I am trying to do this right now. Thank you.

 

[swshawaii]

http://www.mysporttrac.com/MySportTrac/projects/seafoam.pdf

 

[jweb1369]

Thanks. I went ahead and just put it in the brake booster anyways, so it's good that he said thats where to put it. Anyways, it smokes quite a bit more when you're actually driving it. I mean probably 2-3 times more smoke was just pouring out of the exhaust while driving around the block at about 35-40. I felt bad for the people behind me.

 

[swshawaii]

Good deal. Glad you weren't followed by a fire truck. LOL

 

[ophidia]

I'll bet the people behind you were like "Dude-- check your head gaskets!"

I had someone follow me home to tell me that one time when I did that-- with my motorcycle!

 

[celly]

"IAC Method" is by far best Seafoam method for the SOHC V6 (been there, done that). I wish it were so easy for the 5.0. (been there, done that too).

Brake booster method is the less desirable method for both. Only gives partial coverage to your engine.

 

[jweb1369]

"IAC Method" is by far best Seafoam method for the SOHC V6 (been there, done that). I wish it were so easy for the 5.0. (been there, done that too).

Brake booster method is the less desirable method for both. Only gives partial coverage to your engine.

How do you do the IAC method?? Please explain.

 

[celly]

How do you do the IAC method?? Please explain.

I found the instructions in the archives. Search around (we have two good search tools on the site).

I haven't had a SOHC equipped Explorer for 6+ years. I used the method on my old '00 Sport which is almost identical to yours. Sorry, the instructions are foggy to me now, but the method was extremely effective. Night and day difference over brake booster method.

 

[jweb1369]

Found it...

The IAC method is done by putting a PVC T connector on the first hose that goes into the intake tube (should be the one connected to the IAC). Then plug it back in with the PVC T connector and pour the sea foam in there once the engine is started. Tape might be necessary to cover the hole to start the engine or to regulate the throttle.

 

[celly]

Found it...

The IAC method is done by putting a PVC T connector on the first hose that goes into the intake tube (should be the one connected to the IAC). Then plug it back in with the PVC T connector and pour the sea foam in there once the engine is started. Tape might be necessary to cover the hole to start the engine or to regulate the throttle.

That sounds familiar. I had a Volant air intake on my old Sport and I remember using one of the hoses off the intake to guide the Seafoam into the vac line under the IAC.

I sure wish it was that simple on the 5.0. The only good method with that is using the PCV which is a pain to get your hands on.

 

[gdgiordano]

Sorry for the old post revive, but does using a spray bottle right into the manifold work well?

 

[Flash]

Sorry for the old post revive, but does using a spray bottle right into the manifold work well?

Right into the throttle body would work, as long as the engine will run to suck it up.

The best thing to do after a seafoaming is to go for a bit of a highway drive, lock out overdrive to keep the revs up a bit.

Get it all nice and warm and think about the chunks of carbon that shpuld be flaking off and going down your exhaust pipe to get stuck in the cat.
Keep driving to burn it out.

 

[markfothebeast]

I have done this for years. There is no real purpose to drive to burn out the carbon as you can simply raise the RPMs of the engine in park or neutral with the same results (unless you want to fog up the neighborhood). I have fogged up atleast 1/2 a mile of highway my valves were so dirty. I found that the best method was to let the engine stall after about 1/2 a can of product. This lets the fluid sit in the valves that are closed. I wait 5 or 10 minutes and repeat. On the last bit in the can I rev the engine until most of the smoke has cleared. You can also do this method using water in moderation with less harsh emissions piling up in your converters (and it's free). I wouldn't let the engine stall on the water method, though. This way of doing it has been around for ages.

I no longer use Seafoam for anything. It has gotten to be far too expensive because of it's brand name. I now use Berryman's B12. 3 cans can be had for the price of one Seafoam. It is much more concentrated than Seafoam.

Considering the chemicals in these products are generally petroleum or methanol/ethanol based mixes, you could most likely make your own "Seafoam" type product.

 

[gdgiordano]

I have done this for years. There is no real purpose to drive to burn out the carbon as you can simply raise the RPMs of the engine in park or neutral with the same results (unless you want to fog up the neighborhood). I have fogged up atleast 1/2 a mile of highway my valves were so dirty. I found that the best method was to let the engine stall after about 1/2 a can of product. This lets the fluid sit in the valves that are closed. I wait 5 or 10 minutes and repeat. On the last bit in the can I rev the engine until most of the smoke has cleared. You can also do this method using water in moderation with less harsh emissions piling up in your converters (and it's free). I wouldn't let the engine stall on the water method, though. This way of doing it has been around for ages.

I no longer use Seafoam for anything. It has gotten to be far too expensive because of it's brand name. I now use Berryman's B12. 3 cans can be had for the price of one Seafoam. It is much more concentrated than Seafoam.

Considering the chemicals in these products are generally petroleum or methanol/ethanol based mixes, you could most likely make your own "Seafoam" type product.

Will the engine stall on its own? How long should I leave seafoam in the oil?

 

[markfothebeast]

Will the engine stall on its own? How long should I leave seafoam in the oil?

This was posted near the top, which describes the method.
http://www.mysporttrac.com/MySportTr...ts/seafoam.pdf

Yes, it will stall on it's own, depending on the amount of liquid that the negative pressure from the intake manifold vacuum line pulls in. This depends on how long you hold the vacuum line in the can. It could backfire in the can if you pull too much fluid in at once. I have had this happen.

This is in no relation to adding SeaFoam to your oil. That is something completely different. Personally, I don't add SeaFoam to the oil in my vehicles.