i have an 03 tls with 158000. i was planning on doing a sea foam treatment and i know that you should split the can by thirds and how to get an oil change soon after putting it into the crankcase but i am unfamiliar with the rules for the throttle body. all i know is to avoid the MAP so how would i do this part? steps please?

 

Are you talking about going through a vacuum line?

 

well i am not sure if i should use a vacuum line or remove the piping so that i can physically see the throttle body valve and spray it that way?

 

Check this out....

https://acurazine.com/forums/showpos...52#post2033721

 

Ahh i didnt see this when i was searching thanks!

 

You're Welcome!!

Just make sure you don't let your car suck down all the SeaFoam at once if you do go through a vacuum line! Give it little sips... My car started acting as though it liked it after the first few sips LOL!

 

When you pour the seafoam through the vaccum line, try not to let your car stall. You'll either have to have a buddy in the car and give it small revs or you can do it by hand at the throttle body, but it would be tough to give your car sips of seafoam and rev it at the same time.

Also make sure you let your car sit after you've poured in your sea foam. 15 - 20 minutes should be enough.

 

I never did anything less than 1 full can thru the vac line.

 

When your done with the seafoam treatment through vacuum line, let car sit for about 10-15 minutes and drive down the road giving it some juice until all the crap comes out. At a stop sign jump on the pedal until you don`t see any more smoke. Repeat until done, maybe a mile down he road.

Note: Doing the vacuum line seafoam treatment might throw a code but will go away quickly so don`t sweat it.

Yes I`m telling you to jump on the pedal. Enjoy!

 

Hell yeah, with the junky gas.....engines need all the help they can get.

Try using Seafoam in your small 2 cycle motors also. Great for chain saws, weedwackers, lawnmowers and always twice a year in the TL !!!

 

Seafoam is wonderful stuff, great cleaner.

Also make sure your outside not in any enclosed area when putting seafoam in the vacuum line, hell of a lot if smoke.......!

 

'Tried Sea Foam the first time today on my '03 CL-S with 174K miles. My reason was to rid engine hesitation.

I used the large brake booster vacuum line to have it sucked into, though oddly I did not find the line right away since it is large in diameter. I attached some photos to help:

1) identifying the engine shroud mounting bolts (4), each 10mm
2) shroud removed exposing the manifold
3) the brake booster vacuum line connection location at the back of the intake manifold (the side nearest the firewall, a little toward the driver's side)
4) Sea Foam being sucked in

I used a 12 oz can of Sea Foam through a 2 foot length of 1/2" diameter heater hose. I slipped one end over the manifold fitting and the other slipped into can the opening without direct contact with the liquid. The heater hose was a little loose at the manifold but okay since this vacuum line is strong. I allowed the vacuum to suck in the solution for ~5-10 second intervals with a pause when the engine started to stumble until 1/2 of the can was emptied. This took near two minutes. Then shut of the engine and waited 7-10 minutes (not more than 15). During the wait time I re-connected the vacuum line from the brake booster at the manifold, snipping about 3/8" off the end of the vacuum line for a fresher fit connection to the manifold fitting. Then screwed the shroud back on. All in about 8 minutes. Then cranked the engine over with a few soft pulses on the gas pedal and it started a little rough, then smoothed out. Immediately I drove away until the engine was running completely smooth then slammed on the gas and whoof, a thick cloud of white smoke was left behind standing still in the air (your first hop is best not done in your neighborhood). Accelerated until the VTEC valve timing engaged (high RPM under load) a couple more times then opened it up on an uphill freeway on-ramp. The smoke was gone by then and the engine running a tad bit smoother. Accelerating hard heats up the combustion chamber and related areas to help dispel dissolved gunk the Sea Foam loosened.

Tomorrow I'll put the remaining 6 oz of Sea Foam into the gas tank with just 1/4 of the tank filled (manufacturer's recommendation of ~1.5 oz Sea Foam per gallon in the 16 gallon tank) then refill the tank.

By the way, if you think that ~$10 is too much for a can of Sea Foam, when I passed by my local Honda dealer to ask about a part, a sales technician (strange title) told me that they could do the job for only $154 (with a smile, of course). My total time was about 30 minutes end-to-end including driving and putting a few tools away = time well-spent.

 

...and make sure that your engine is up to NOT (normal operating temp) before performing this service!

 

STOP DO NOT USE THIS VAC PORT FROM BRAKE BOOSTER!!!!!!!!!!

it only feeds seafoam to the rear 3 cylinders! which is a reallllly bad thing

immediately correct this- at MASTER vac port- that hose clamped to TB inlet to manifold
pulls 20 inches vac at idle- makes tornado of seafoam

or best method per seafoam tech guy: 1 can to 8 gal- that's 2 oz per gal Cleaning strength, and max suggested dose (1 oz per gal is maintenance dose midyear)

run that tank down
On next tank or one after, add 1 can to 8 gal
that gets places the vac port misses

but NEVER use brake booster on the TL

1.5 per qt of oil before oil change--only time 1.5 is used- in oil and that's half a can to our full oil

 

Okay, makes sense where to connect the vacuum line (though some SeaFoam would make its way to other cylinders in pulsing). 2 questions then:
1) do you know how to modify or delete a post?
2) do you have pics showing everyone where the master vacuum line is as you mention?

 

1. Only a moderator can delete a post.
2. I have a write up on the home page "Seafoam through vacuum line". complete with pics and instruction.

 

I Had the same issue when trying to seafoam a Bmw 528i inline 6 through the intake, So I just put it in the gas tank and let it run. Couldn't find a way to feed all 6 cylinders safely unless I used the spray Seafoam through the throttle body.

 

removing the TB air inlet tube from air filter box to TB, is a great place to spray seafoam. and it cleans and lubes the TB throttle air plate
much lower vac suction there, easily controlled flow amount etc

note the vac method is really designed for mechanics working on a car with severe carbon loading, need to blast it clean so a correct diagnosis of rest of problem can be made
All others should use gas tank method, plus a little spray for the TB throttle plate
is my opinion