With all the talk about Seafoam lately, Me and my friend decided to try it with my 152k old LS motor.

I followed the directions on the t-i writeup, put 1/2 the can in the brake booster hose, and told my friend to shut her down. It stuttered for a minute and then revved to life. I had no idea what was going on, so I yelled to him to shut it off. He told me he did and showed my the keys in his hand.

All the while the car is still running by itself. White or grey smoke was pouring out of the intake and the brake booster line and continued to do this for 30 seconds at least. There was nothing I could do to shut it off. So I sat there and just stared in disbelief. Finally after what seemed like an eternity, it quit. When the smoke cleared (literally), I ripped the intake off and the TB was filled with black gunk. I had my friend open the throttle plate while I looked inside. Completely covered in black liquidy gunk. The intake itself even had some in it.

So I wiped all of the gunk I could get to off and let it sit a minute. At this point I had no clue wtf happened, and was wondering if my engine was blown or what. So I finally got the ***** to crank it over. Fired right up but the idle was jumping around like a crack baby. Stupid me, put the brake booster line back on. So I put it back on and all seemed normal. Seafoam seemed to be doing its thing as my exhaust soon covered my entire driveway.

So I had my friend follow me, and I took it for a good hard ride like instructed and it was running alright. At first I wasn't really getting on it to much just to be sure nothing was seriously wrong. About 5 minutes into the drive, the smoke started to clear slightly. I came to a stop sign and really got on it there. 1st, 2nd, 3rd - no problems. So I slow down for an upcoming turn and get on it there again. Around 1/2 throttle it seemed to just die.

So I slow it down and try 1/2 throttle again. Seemed to bog. Downshift and hammer it, it takes off. So I'm thinking O2 sensor? While coming home my friend gets next to me at a light and takes off. So, naturally I follow. Car ran perfectly normal, I stayed right with him.

So what do you guys think would be causing the engine to just run by itself and spew smoke out of the intake? Would an O2 sensor be causing the car to act weird under half thottle or something else?

Any body have some input? I'm still kind of shaken by the whole thing, because it just wasn't normal.

 

i just did seafoam.. and when i dumped it in to get the "Stall", it backfired and shot all that was in the booster line out and at me and under my hood, but damn.. that **** worked good.

I believe this backfire puts the smoke into the intake runners... and that seafoam maybe very combustable if flooded in the engine at high compression?

 

i think casper is just playing with u

 

the ONLY way your car is going to keep running, is if theres power going to the distributor. No power to the dist= wont run. So when you turn the key it kills power to the distributor and nothing else (well injectors, etc but thats getting complicated) So pouring **** down your vacuum line has nothing to do with spark going to the cylinders.. What PROBABLY happened is the seafoam kept burning in the cylinders for a minute, until it was all gone and then it died. And yes, itll bog for a bit when you first do it, its all normal. Give it 15 or 20 miles and itll be all back to normal, no worries.

 

wow thats really weird, the car didnt shutoff, your car is haunted or something.

 

instead of casper the friendly ghost, casper the possessed ghost hahaha

 

Casper should hang, that mother****er scared the hell outta me.

 

Oh yeah, the smoke was literally blowing out of the intake for at least 30 seconds, what's up with that?

 

not to sound like a noob, but never heard of seamfoam....what is it?

 

http://www.team-integra.net/se...D=972

 

hmmmm i think iw ould just stick with occasionally getting on it to clean out the carb and injectors ect ect...i don't think id do that now after hearing ur horror story

 

**** sea foam. after seeing that **** tonight. wow. no comment. hope the car is ok man.

that was a pretty sweet race though... lol

 

That part with the engine not shutting off sounds kind of normal.
One time I revved my engine 4-5ish and shut my car off by mistake, and it didn't Actually turn off till the revs went back down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FlatBlackTeg &raquo;</TD></TR><TR><TD CLASS="quote">That part with the engine not shutting off sounds kind of normal.
One time I revved my engine 4-5ish and shut my car off by mistake, and it didn't Actually turn off till the revs went back down.</TD></TR></TABLE>

so what you're saying is that the car didn't atually shut off until the motor stopped running???

i am intrigued by your ideas and wish to learn more about them. do you have a publication i might subscribe to?

 

when ya reved quick... it was up to 4 grand. turn key off. and motor had to rev back down to zero. a amotor shouldnt just lock right up to 0 revs instantly after ignition is off. the crank still has that inrtia. not what happened tonight between me and 91tegls. id say the car acually ran for almost 2 minutes in our panicky period. not just the amount of time to wait for the revs to come back down form turning the key.

toohott4handlin has my right vote. since seafoam is 100% petrolelum. obviously its flammable. caught on fire due to the heat inside the combustion chambers and poof. and the odd thing about it was. we beleive that it was runnign the engine backwards. kinda like a k series engine. intake in front. exhaust near fire wallso 91tegls's intake manifold was caspers exhuast. casper most definatly shall hang for this act of crime.

 

i would say it was detonating or acting like diesel fuel. I had this happen once and it ran of for about 15 seconds kind of up and down. Come to find out the gas pumper at the local station put 87 in instead of premium. Knock knock knock. Had to fill up the rest of the way with 93. Timing was at 22 degrees advanced.

 

That's never healthy.. that's why I always pump my own gas.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tnord &raquo;</TD></TR><TR><TD CLASS="quote">

so what you're saying is that the car didn't atually shut off until the motor stopped running???

i am intrigued by your ideas and wish to learn more about them. do you have a publication i might subscribe to?</TD></TR></TABLE>

bwhahaha... that was amusing.

EDIT: momentum pwns3 j00.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91TegLS &raquo;</TD></TR><TR><TD CLASS="quote">All the while the car is still running by itself. White or grey smoke was pouring out of the intake and the brake booster line and continued to do this for 30 seconds at least. There was nothing I could do to shut it off. So I sat there and just stared in disbelief.

Any body have some input? I'm still kind of shaken by the whole thing, because it just wasn't normal.</TD></TR></TABLE>

When a car is running with the ignition off it is called 'dieseling'. Basically, there was a carbon deposit in one or more of your cylinders that was hot enough to keep igniting the seafoam to keep the engine turning. The solution is to put it in gear and pop the clutch, that stops the engine. If it's an automatic try putting it in drive, that should do it too.

 

yep, me and 91TegLS thought of that but it was to sketchy. having my car behind him and a trailer in front in a one lane driveway. it just didnt seem like the best idea.

 

Maybe you got a turbo timer and didnt know about it

Seafoam is some good stuff.

 

I never agreed with running it through the brake booster hose. Your going to destroy o2 sensors and possibly cats doing it this way. Just put it in your gas tank.

 

Welp, it's running great now, just scared the hell out of me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91TegLS &raquo;</TD></TR><TR><TD CLASS="quote">Welp, it's running great now, just scared the hell out of me.</TD></TR></TABLE>
good to hear its running good,i might try seafoam but im just so scared something will happen and its my daily driver and I NEED the car to work

 

not suposed to drive the car with seafoam in the crank case, if thats what you did. brake booster is fine.