Here's a Ford service procedure for a 4.0 V-6, seems it should work with Seafoam too.

SERVICE PROCEDURE
Use Motorcraft Carburetor Tune-up Cleaner PM-3.
Carbon removal: a. Disconnect canister purge line from throttle body.
b. Attach a vacuum line to the canister purge port.
c. At hot engine idle, allow the engine to ingest 1/2 to 2/3 of a can of Motorcraft Carburetor Tune-up Cleaner. Use caution not to ingest too quickly due to potential hydro-lock issues.
d Shut engine off and allow it to soak for one hour.
e. Start engine, allow engine to ingest the remainder of the Motorcraft Carburetor Tune-up Cleaner.
f. Remove vacuum line and re-install canister purge line.
g. Road test vehicle at 3500 RPM for 2-3 miles.
h. Repeat above procedure two times for a total of three times.
i. Change oil and filter. And Plugs (?)

Review the customers' driving habits. The recommended drive cycle should include daily periods of engine operation above 3,000 RPM, such as a brisk acceleration from a stop position. This will break/burn the carbon off the piston head.

 

Brian,

I want to make sure I do this right. I disconnect the hose at the firewall, correct? Also, sounds like someone needs to be in the cockpit to rev it up to 2000-2500 rpms while you pour.

How much of the can do you put in the vacuum line?

Thanks.

David

 

David,I would put no more then 5oz! Put the remainder in the gas tank.

 

David,
Correct. Disconnect the vac line form the evap assembly that is mounted on the firewall. The hose is locked in place with a round connector that incircles the vac line and clicks in to place. Pry the sides open enough and the lin ewill pop off.
About 5-6 ounces is correct (according to wha the can says and what I did, and what others say they have done.)

And yes, someone in the cab is a help...keeping the eninge up in rpms and then shutting it off immediatley after you finish adding the Sea Foam.

Be sure to remember to hook the vac line back up when you are done.

 

I found this on the net, it may help:

http://auto.snowsuperstars.com/seafoam.html

also,

http://www.mx6.com/forums/showthread.php?t=87411


David

 

David,good job on finding those articles! But,what was the 'nanner for?

 

I guess if all fails, coax a monkey to do it.

I got it! If you don't have a funnel, peel the banana. Then take the banana and hollow it out. Make sure you have a shell. Then use that as a funnel. The hollowed out banana will resemble a condom. So be careful as not to mix those two up.

 

i have a 96 t bird( i know it is not a truck )that has a 4.6l. it started to smoke on occasion, and it was consuming a qt of oil every tank of gas. i did a little of research and found out that it could be the valve stem seals, so i replaced all the seals on the left bank because of the #8 plug being fouled. that did not do anything at all to help my proplem. i stumbled on a can of seafoam at the local parts house and read that it frees sticky rings, so as a last resort before tearing down the engine i put a 3rd of a can into the pcv hose and the rest into the oil.
before i got to the end of my street the car quit smoking!!! i haven't had to add any oil in the last 2 oil changes. therefore i'm sold on the stuff.

 

You put it in your oil? That's a new one. Any other opinions on that one?

Tom

 

Hello everybody, haven't posted for awhile. Been busy doing a little remodeling on our new house and three apartments that I rent out. That stuff and my job and trying to spend some time with the wife and son has pushed the F-150 to the back of the line. Now I have some time to mess with the truck again.

I'm also curious about adding the seafoam to your oil, as well as to the gas tank, being that it was recommended to change your oil and plugs(?) after a seafoam treatment due to both getting really dirty...???

I have never used the stuff, but am going to soon to see if it helps my truck at all as far as running a little smoother, acceleration improvement. The new plugs, wires, fuel filter, MAF cleaning didn't help anything and I've never gotten a CLE.
I think it runs crappy enough that the PCM should see something wrong. I still can't determine, and haven't actually messed with it for awhile anyway, if my coil pack is bad or not.

Anyway, the Seafoam. You guys that use the stuff regularly, how often are you using the stuff and when exactly am I supposed to change the oil and plugs, if I add it to the oil and gas tank? It doesn't make sense to change the oil if you are adding the Seafoam to it, unless I misunderstood something???

Thanks,
Rich
2000 F-150 GT XL I mean , 4.2, MD05, reg cab.
Should hit 100,000 miles early in November

 

Well dude, I JUST did it 10 minutes ago and the can says nothing about changing the oil or plugs. But i changed the oil anyway.

Brian, darn i thought this may solve my mystery problem but i felt or heard NO changes whatsoever. And hey, i run 93 octane all the time anyway, which already has detergents in it, so i think that my interiors are pretty darn clean.

oh well, seafoam did nothing for me.

the smoke show was pretty cool though

Tom
t

 

actually, the can says that it's supposed to clean your plugs and make them last longer. If the plugs get dirty during the proceedure, than it's safe to assume that everything inside your engine would get just as dirty. uh, common sense I think?

Tom

 

Tom, I have never forgotten your "ping" problem. You STILL have it !?!?
I just can't believe that the cause can't be determined!
It's your problem and it drives ME crazy !!

Glad to have you back around.

 

Tom,

I didn't really understand the oil, plug changing suggestions either. Both of the links provided by Inda Boda mentioned changing the oil and one suggested changing the plugs. I think Brian's instructions mentioned the oil as well.(?) It didn't make sense to me. Then again, a lot of things don't.

So, the Seafoam didn't help you at all, huh? Awhile back, I was trying to get some info on the coil packs on these things and I guess you were having the same problem. No CLE and the thing not running very well. Did the Valvoline cleaner stuff you were using not help either?
I guess I will still try the stuff, I just will go into not expecting any real improvement. Maybe I'll be surprised. It just seems many people seem to notice an improvement. I wish I could figure out what is causing this thing to run so poorly. I can honestly say that I have never wished that a CLE would light up...until now.

Maybe, I should have listened to my wife about a week ago, when she came down to the basement and asked me if I wanted to go buy a new truck....Of course, it was a Chevy commercial she had just watched. I've never had anything except for a Ford truck. I don't know if I know how to operate anything else. Do they work the same? I kid. I just want to figure out what is wrong with this thing. I was hoping the Seafoam might help to some degree.

Thanks,
Rich

 

Brian, Rich,

yes Brian, still have this stupid problem that all stems back to the coil pack blowing from the spark plug wires popping off. None of the cleaners worked. There HAS to be something that happened when those plugs wires where arcing. Possibly a melted PCM wire someplace that I can't notice or something. Truck runs GREAT up to 3/4 throttle, but give it full throttle and it just loses power and starts pinging after the rpms pass 4K, then the truck doesn't want to rev anymore and refuses to shift to the next gear. Something is happening with the open loop when the TPS senses WOT and I can't figure it out for the darndest!!!! My truck will not exceed 75 mph even with the new smoother tires which replaced the unbalanceable and nasty Super Swampers. There has to be a burnt wire or a vaccum leak somewhere. I've sprayed the whole motor down many times to check for a vaccum leak and, nothing! Still stumped, but I just don't full throttle the truck anymore. one day.....one day, i'll figure it out.

Tom