so i bought seafoam not knowing there was a pouring one and a spray one, the puring one is for vacuum lines,crankcase,fuel tank, the spray is for throttle bodies, air intakes, etc. now knowing that, i poured the seafoam down my throttle body, never stalled but i had wierd jumps in my rpms which went away after about 5 min of driving, when i found out i used the wrong version, i bought the spray and sprayed it into my throttle body, call me stupid, but i dont know if it did any internal damage to the cylinder walls, piston rings, valves when i poured the non sprayeable one which is not meant for that but i didnt know, jeep runs fine now but im hoping i didnt do any internal damage that will soon bite me in the future, you guys know if i did any?

Since it runs, odds are you didn't do any harm. The engine can take liquids like water or cleaners dribbled or sprayed in but dumping larger quantities in at once can cause hydrolock. Sounds like you escaped with no damage.

I personally trickle (very slowly) 16 ounces of pure water down the throttle body every year or so while keeping the RPMs up to keep the carbon deposits cleaned out... free and easy. That method has been used since it was discovered during WWII that it cleans up combustion chambers and keeps them clean if used every so often. That's also a common thing to do to high performance engines when no driven hard enough to prevent carbon deposits from forming. I first heard of doing this back in the 60's while watching a Corvette specialist at a Chevrolet dealership do it to a big 427 engine that wasn't running well. It ran fine after he was done.

I don't believe it would have damaged anything as there would t have been enough to hydro lock I wouldn't think. Personally and I am very conservative when it comes to car maintenance would change the oil as I don't know how much of that liquid got down in the crankcase. Again probably not enough to matter but for my peace of mind I would change it

It's actually used in the crankcase- can be added to oil.

[QUOTE=Jerry Bransford;17746265

I personally trickle (very slowly) 16 ounces of pure water down the throttle body every year or so while keeping the RPMs up to keep the carbon deposits cleaned out... free and easy. That method has been used since it was discovered during WWII that it cleans up combustion chambers and keeps them clean if used every so often. That's also a common thing to do to high performance engines when no driven hard enough to prevent carbon deposits from forming. I first heard of doing this back in the 60's while watching a Corvette specialist at a Chevrolet dealership do it to a big 427 engine that wasn't running well. It ran fine after he was done.[/QUOTE]

Wow, very interesting. I'll have to give this a go on my truck.

Just keep the water container under good control so it doesn't slip and dump it in all at once, and trickle the water out very slowly. I do that slowly enough that it takes a couple minutes to completely empty the container.

Great. I'll make sure to be very cautious, thanks for the advice.

Because I don't trust myself on a slow pour, I use a spray bottle to feed the water in .

Before the days of oxygen sensors and cats we used to dribble ATF down the carb to clean out the combustion chambers always went well unless someone called the fire department for smoke but even then it had drifted down the street by the time they arrived

Had a buddy that added a windshield washer system that squirted atf into carb when he pushed a dash button and it sure backed off any tail gaiters

You can pour the Seafoam straight down the carb at a high idle as long as you do it slowly and don't stall your engine, no problem. I used to do it to my 454 twice a year to clean the top end. It will usually cause quite a bit of smoke out the tailpipe but it just cleans everything inside real well. It won't hurt a thing

Water is perfectly effective at cleaning out the engine, especially carbon deposits, and it's free.

Very true, it just always seemed wrong. I have used it also.

Come to think of it Jerry, it was probably a guy who saw how clean a piston top was from a blown head gasket that invented water cleaning.

It was discovered during WWII by bomber aircraft mechanics. Those engines had water injection added for better high altitude performance and they noticed the engines were always sparkling clean inside.

Yep, done that for years. Turns to steam. Kinda like steam-cleaning your engine on the inside.

All the WW2 pilots that became engineers I knew including my father said water injection let you run higher compression for higher performance but was not good for engine longevity

Only "modern" engine I delt with fuel injection was a 69 boss 302 and that was a high performance high rpm high compression solid lifer engine that was also built much more for high output then longevity

I believe the spitfire had it with the Merlin. Helped get off the ground faster during the blitz

...and its free. But soon to be extinct in California.

Plenty of seafoam if you live close to the beach though.

LOL!sad but true

Water injection cools the intake charge tremendously, which lowers the air to fuel ratio and helps prevent knock. It also helps degunk intake valves, and to a lesser extent the cylinder walls/piston top. A lot of high performance turbo/supercharged engines use some combination of water, alcohol or meth injection to decrease intake charge, increase performance, and help keep engines cleaner (especially in DI engines, which have a tendency to gunk up intake valves).

The only downsides is you run a slight risk of hydrolock, which is why they sell injection kits with nozzles to atomize the water/alcohol/meth charge. The other downside is if you have less than excellent compression due to ring gap, you can get water running down the cylinder walls into the crankcase, which will make your oil a mess.

In most cases, it won't hurt anything as long as you know what you're doing.