Ok, I remember reading that some folks use Seafoam to clean the throttle body. Do I spray it in the throttle body opening (shown below) and then wait about 30 minutes before I start the truck?
Is Seafoam safe for the throttle body coating.

This picture is of my 1999 F150 5.4L throttle body...

 

Most people wait until the engine is warm. There is a guy on here who had a good idea, he said he bought a PCV valve that had 3 fittings on it and used one of them to suck the seafoam up. I just pour mine in the gas tank, it wont clean the intake that way but it'll clean the combustion chambers.

 

Temp1,
Looks like you need to get some 3M Throttle body cleaner, as it is safe to use on coated TBI's. I usually get it from NAPA. As far as Seafoam goes, I usually disconnect the vacuum line from the brake booster and let it get sucked in through there and shut the engine off for about 15 minutes after it starts to bogg down. You can also add it to the gas.

 

Thanks for the responsed so far...

I still would like to know if Seafoam is safe for "COATED" Throttle bodies?

 

Temp1,

I have an empty can in front of me, and it does not state it is safe for coated TB's, only oxygen sensor safe.

 

I have also sent an email to Sea Foam requesting the same information.

 

LOL, thanks!

Lets see if they say "Your putting the Seafoam where?" LOL

 

I got my first car in 1960. A 51 Merc. I put seafoam in the gas tank because my Dad did. At least three times a year. Everyone in my family used Seafoam. I can't answer your TB question but I've put a lot of miles on a lot of vehicles and I've never had a carburetor or dirty injector problem, ever. Don't know if its really that good but I'll continue to use it until someone can prove to me that it doesn't work. Old habits die hard. Three or four times a year I run my tank down, put 10 gals. and a can of Seafoam in and run it down again.

 

TEMP1,

Dunno about the lining; I used some SeaFoam on a coupla paper towels and used a special tool (middle finger, starboard hand) to clean up the TB and the butterfly on both the LOMLs '97 Expy and my '99 SCab F-150 (both 5.4s).

It seems from my perusal of this forum that the 4.6 is a foul beast, whereas the 5.4 isn't so much.

I noticed on the Tranny forum you said you go through six quarts of oil per 3000 miles!? Then you mention leaky heads.

I bought my '99 with 64K on it from the dealership, and noticed real quick the smell of leaking oil (I've owned a Harley). I took it back to the Dealer, and they didn't even raise an eyebrow. They fixed it, and killed the motor, but that's a different story.

My first visit to this site was back then, and it turns out there was a raft of '99 5.4s with leaking head gaskets. Some were gasket related, but apparently there were a bunch of bad engine castings. You may want to check into a "hidden warranty", unless you have PT warranty remaining on your rig.

Hope this helps.

Now, if I could only figure out how to get the F*@#-ing seat belt to retract!

 

I went ahead and sucked 8 ounces of Seafoam thru the PCV valve. The hose for the PCV valve ends up at the bottom of the throttle body so I figure it can't eat too much coating. LOL
Im waiting to start the engine again. I had the engine rpm's up a bit to keep the Seafoam from killing the engine as I fed it into the PCV valve. Then I ran around and turned the ignition off when it got to the end of the 8 ounces. I hope I did this correctly. I did not see any smoke or anything while I was pouring the Seafoam in. I use Mobil 1 synthetic oil and I wonder if it is keeping my engine really clean. I guess I will know when and if my truck starts again (Fingers crossed, knocking on wood). LOL

 

I had to step on the gas a little to get the truck started. I did not see any black smoke at all. I guess my engine was clean already.

 

Yeah, my drivers side seat beat does not retract well also. I also can't get the freakin turn signals to work all the time. The blinker control will not stay when I have the steering wheel turned in certain positions. It probably one of the most annoying things about my truck. I have the 1999 F150 Lariat Flareside Extended Cab.

 

pushrod -

I found out something recently, and I thought I'd pass it along: One seat belt in my truck was not working properly, so I took it to the dealer. They fixed it (no charge to me) and the Service Manager told me that items like that are covered for 50,000 miles, regardless of the year of the vehicle or the original warranty length (something about Federal Safety regs ??).

Anyway, I know you probably have more than 50,000 miles but so did I and they fixed it anyway.

Might be worth a shot...

 

I got a reply from Sea Foam indicating that their product is safe for use on coated TB's, and here it is..

Hi Gordon,

Yes, Sea Foam is safe to use on newer machines with coated throttle bodies. In fact, Sea Foam is known as the safest product on the market. Thanks for using Sea Foam.

Sincerely,

Mark Hanson
President
Sea Foam Sales Company
(952)938-4811
m.hanson@seafoamsales.com

 

Thanks Yankee!