~ ~ Anyone Used SEAFOAM ~~
Thread Starter
Safety Car
Joined: Jan 2005
Posts: 3,675
Likes: 58
From: Hayward (Bay Area) CA
~ ~ Anyone Used SEAFOAM ~~
Hey guys,
My baby is a 99 A4, with 48K miles on it. It's due for oil change. I figured I'll do a Seafoam, before changing oil.
I've read a lot of articles that it's good. I've also read about the Methods on how to use it. But I'm not that smart
. I can understand putting it into the crankcase (oil), and gas tank... but I can't seem to understand how you suck it into the intake. I know some of you will say brake booter, or something like that. I still wouldn't know... can someone give me more specific (detailed) diagram, or understanding on "How To Use Seafoam"?
Thanks a lot in Advance!
My baby is a 99 A4, with 48K miles on it. It's due for oil change. I figured I'll do a Seafoam, before changing oil.
I've read a lot of articles that it's good. I've also read about the Methods on how to use it. But I'm not that smart
. I can understand putting it into the crankcase (oil), and gas tank... but I can't seem to understand how you suck it into the intake. I know some of you will say brake booter, or something like that. I still wouldn't know... can someone give me more specific (detailed) diagram, or understanding on "How To Use Seafoam"? Thanks a lot in Advance!
Safety Car
Joined: Jan 2007
Posts: 4,225
Likes: 0
From: The Great Truth: "There ain't no free lunch"
St. Jude Donor '08-'09-'10-'11
And the stuff works..Install is relatively simple....Brake booster is on engine side of firewall....about a foot in diameter w/brake fluid reservoir on the front....15/32 hose attached to front of booster....Have a partner set rev's about 2000 while slowly pouring about in 1/3 of can and immediately shut off. Wait 30 minutes (some wait overnight) start and you will probably see a lot of white smoke....
Pour 1/3 in oil - 1/3 in gas......drive a while and change oil....GL
Pour 1/3 in oil - 1/3 in gas......drive a while and change oil....GL
Advanced
Joined: May 2010
Posts: 74
Likes: 1
From: Bend OR
I just gave my c5 the seafoam treatment last weekend, changing the oil this weekend. I connected a rubber hose with a funnel attached to it to the pvc inlet on the side of the intake manifold. Like tlc said, 1/3 into the intake, 1/3 into the gas tank, and 1/3 into the crank case. There are so many threads on this topic in the forums. Most seem to recommend the pcv inlet on the intake.
Pro
Joined: Aug 2009
Posts: 662
Likes: 0
From: Loxahatchee FL
When I did mine it was recommended by seafoam to put full can in crank not less than 50 miles but they said they saw better results with at least 500, also one can in gas tank as with the ethanol in the mix now it takes a bit more to do it's job. As for the intake it took 2/3 can before the white smoke started to exit the exhaust as per instructions given to me, get hose put end on front pcv intake on rear side of throttle body, engine running at 2000 or so stick other side of hose into bottle when you see the smoke shut car off and wait at least 2 hours. Personally I waited 6 but my car has 130000 on it and wanted to let it soak good. Everyone has there own way.
When I had it street tuned they said there was no detonation issues at all which tells me it worked out great.
Good luck and it's worth it
When I had it street tuned they said there was no detonation issues at all which tells me it worked out great.
Good luck and it's worth it
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Racer
Joined: Jun 2010
Posts: 415
Likes: 16
From: Toronto
I sell and use lots of Seafoam!! I put it every tank of fuel in my boat.
I did my Tahoe through the brake booster hose. You simply hold the can about 6" from the hose with your thumb over the can and slowly let the seafoam pour towards the open hose. You don't need to rev the car, as the application the seafoam at this rate should not stall the car.
What happens is as you slowly pour the liquid (controlled by your thumb on the can) it will get sucked into that vacuum hose!!! It virtually streams or turns to a mist as it gets sucked in!!
I used 1/2 can on the Tahoe....and put the rest in the fuel tank. We did mine as a demo, and only left if shut off for 10 minutes.
Start it up, and go for a good blast for 10 minutes and all the smoke will go away!!!
It seemed to improve 'tip-in' throttle response on mine.
I did my Tahoe through the brake booster hose. You simply hold the can about 6" from the hose with your thumb over the can and slowly let the seafoam pour towards the open hose. You don't need to rev the car, as the application the seafoam at this rate should not stall the car.
What happens is as you slowly pour the liquid (controlled by your thumb on the can) it will get sucked into that vacuum hose!!! It virtually streams or turns to a mist as it gets sucked in!!
I used 1/2 can on the Tahoe....and put the rest in the fuel tank. We did mine as a demo, and only left if shut off for 10 minutes.
Start it up, and go for a good blast for 10 minutes and all the smoke will go away!!!
It seemed to improve 'tip-in' throttle response on mine.
Thread Starter
Safety Car
Joined: Jan 2005
Posts: 3,675
Likes: 58
From: Hayward (Bay Area) CA
...so I took off the plastic covers on both side to look for the pcv intake tube. I'm guessing it's towards the passanger side. But there are 2 tubes. One is a thin tube from throtle body to valve covers, the other also comes out of throtle body and has a big plastic thingy on it and goes into the valve covers area too. The 2nd hose is a little bigger in diameter. So which is it? I really wana do the Seafoam thing...
Also I noticed some oil/grime on my valve covers/heads area. Does that mean I'm leaking oil from somewhere? It's got original 48K FREEWAY miles. I was thinking Gunk Engine cleaner foam all over it, and then spray with water hose. Plz advice me how to protect coils, alternator, or any other electric parts.
Thanks guys!
Also I noticed some oil/grime on my valve covers/heads area. Does that mean I'm leaking oil from somewhere? It's got original 48K FREEWAY miles. I was thinking Gunk Engine cleaner foam all over it, and then spray with water hose. Plz advice me how to protect coils, alternator, or any other electric parts.
Thanks guys!
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
I've used SeaFoam for many years....on my C-4 and other engine applications. I've never put it in the crank case.....1/2 can in the brake booster hose and the other 1/2 in the gas tank. After using 1/2 can in the brake booster hose, turn off the engine for five minutes and let it soak, then start up and drive for a few minutes. 
Could cause hydrolock. I tried it twice and didn't notice results.
Le Mans Master
Joined: May 2006
Posts: 7,875
Likes: 254
From: Hillsboro OR
too. 
Race Director
Joined: Mar 2008
Posts: 12,413
Likes: 502
From: Rio Rancho NM
If you use the brake booster from what I read so correct me if I'm wrong doesn't get into all the cylinders. Also what do you guys mean ", 1/3 into the intake, 1/3 into the gas tank, and 1/3 into the crank case.
I understand the "crankcase"(pvc correct?) "gas tank" well durrrr but what's this intake? I thought using the pcv would take care of that??
I understand the "crankcase"(pvc correct?) "gas tank" well durrrr but what's this intake? I thought using the pcv would take care of that??
Safety Car
Joined: Aug 2004
Posts: 4,908
Likes: 735
From: Southwest Kansas
2022 Corvette of the Year Finalist -- Unmodified
2021 C6 of the Year Winner - Unmodified
They say
1/3 in the crankcase = 1/3 can in the oil
1/3 in the intake = 1/3 can through PCV
1/3 in gas = 1/3 can in the fuel tank
1/3 in the crankcase = 1/3 can in the oil
1/3 in the intake = 1/3 can through PCV
1/3 in gas = 1/3 can in the fuel tank
Racer
Joined: Jun 2010
Posts: 415
Likes: 16
From: Toronto
Gentlemen....read my instructions above....you don't POUR the liquid in....pull the vacuum hose off the brake booster....
Start the car.
hold open can 4" above the vacuum hose with your thumb over the can top.
slowly allow the seafoam to pour out of the can towards the vacuum hose.
you will see the seafoam turn to mist as it is sucked into the engine!!
the engine may chug a bit.....keep pouring slowly....takes about a minute or so...
Shut car off. Let sit for desired amount of time. I left my Tahoe for 10 minutes only, as we were using it as a demo. Some people leave it overnight.
Start car up, go for a drive and WHALE on it!! About a minute later the car will stop smoking.
As a side note, one of my Salesmen tells a tale of a Honda locking up from Seafoam...however, the story goes that he basically poured the liquid right into the intake...not allowing it to mist.
Start the car.
hold open can 4" above the vacuum hose with your thumb over the can top.
slowly allow the seafoam to pour out of the can towards the vacuum hose.
you will see the seafoam turn to mist as it is sucked into the engine!!
the engine may chug a bit.....keep pouring slowly....takes about a minute or so...
Shut car off. Let sit for desired amount of time. I left my Tahoe for 10 minutes only, as we were using it as a demo. Some people leave it overnight.
Start car up, go for a drive and WHALE on it!! About a minute later the car will stop smoking.
As a side note, one of my Salesmen tells a tale of a Honda locking up from Seafoam...however, the story goes that he basically poured the liquid right into the intake...not allowing it to mist.