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What's The Best Way To Seafoam A TBI?

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Old May 10, 2010 | 01:09 PM
  #1  
BigLou907's Avatar
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From: Philadelphia, PA
Car: Camaro RS
Engine: 305
Transmission: Automatic
Axle/Gears: Not Posi :(
What's The Best Way To Seafoam A TBI?

alright i want to seafoam my car (sorry for bringing this up again i know this is nothing new to some of you) im planning on doing everything except the oil. but i want to know whats the best way to get it into the TBI ive herd a couple different ways and i wanted to get your opinion

-should i dump it straight into the TBI itself
-should i dump it into the vac line coming out of the master cylinder, if i do do it that way where should i disconnecet it from the master cylinder itself or after the fuel filter (i think thats what that little thing is but im not sure)

also ive herd some people say dump 1/3 of a bottle in slowly then quickly dump another 1/3 in very fast as to choke out the engine? what do you do? whats the best way to do it?

ive always been cautious about these types of chemicals and i really just dont want to hurt my engine, but i know it needs to be cleaned and i want to know the best way to do it thanks for your help.

o and btw its a 305 tbi out of my 1991 camaro, i hope this makes sence sorry if it dosent.
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Old May 10, 2010 | 01:24 PM
  #2  
DSGx's Avatar
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Joined: Mar 2010
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Car: 92 Pontiac Firebird
Engine: 305 TBI L03
Transmission: 700r4
Axle/Gears: 2.73 one wheel drive
Re: What's The Best Way To Seafoam A TBI?

the way i did it was to dump half of the can by the vac line on the booster and half on the oil. I disconnected the hose after the little canister that u think its the fuel filter and let the engine suck the liquid slowly , after that was done i shut the engine down and dumped half of the can on the oil, let it sit for about 20 to 30 minutes and start the car and engoy the smoke show(if ur engine is rly dirty tho, if urs is like mine it wont smoke much). I was surprised at my little 305 , it didnt smoke much wich some ppl say its cuz of the engine being fairly clean

If u dont want it to go on the oil then dump half on the fuel tank and half on the vac line, or cuz TBI works alot like a carb pour it slowly through the throttle body.
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Old May 10, 2010 | 02:35 PM
  #3  
xX89RSXx's Avatar
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From: Cumberland, RI
Car: 1989 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Re: What's The Best Way To Seafoam A TBI?

I just disconnected the line from the brake booster itself. Slowly dumped itin, then when half a can was reached dumped it fast till it stalled. I let it sit overnight, then burned everything off the next day.....a lot of smoke. If you do dump into the oil, do not drive very long with it in there and change the oil.
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Old May 11, 2010 | 10:46 PM
  #4  
86firebird350's Avatar
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Joined: Feb 2006
Posts: 499
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From: Rock Hill, SC
Car: 91 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: stock
Re: What's The Best Way To Seafoam A TBI?

do a search on LS1tech. the write up is on there in detail.
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Old Mar 12, 2013 | 02:14 AM
  #5  
MFG's Avatar
MFG
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Joined: Aug 2011
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From: San Francisco, CA
Car: 1988 Camaro RS
Engine: 5.0 TBI
Transmission: stock 5 speed
Re: What's The Best Way To Seafoam A TBI?

which is the line from the brake booster? anyway you can show me? im planning on seafoaming mine pretty soon
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Old Mar 12, 2013 | 03:37 AM
  #6  
Schurkey's Avatar
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Re: What's The Best Way To Seafoam A TBI?

Dump it in the gas tank, drive three hundred miles. Done.

Personally, I'd be buying a big jug of Chevron Techron instead of Seafoam.
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