Before catalitic converters, we used to run a water hose in the carburetor to clean out carbon on pistons and valves. DO NOT do this to converter equipped vehicles!

 

Very interesting I have never heard that one.

 

Sounds like good stuff. I think I'll try some

 

For the guys putting it in the vacuum line are you doing the brake booster just to the left of the master cylinder?

 

Brake booster hose is what I always use. Nothing but good results here.

 

Water hose? That's insane. And, water doesn't adversely affect the converter anyway.

 

How old are you?

 

running water down the carb or intake has been around a long time, because of the extreme temp of the steam generated it is recommended to remove the cat during this procedure because there is a chance that large pieces of carbon can actually block passages in the cat causing it to fail.
Think about this....any of you who have done a head gasket lately...just how clean was that cylinder where the coolant leaked in?......

 

I've ran seafoam vaccum induced and in gas in about 6 different vehicles now including my xj with no adverse effects to date.

Some of those vehicles had an improvement and a few of them it didn't seem to do much, I do however like/trust the product.

The one instance that sold me on seafoam was when I had an 85 k5 blazer with a 350 in my care for some issues it was having, one that developed was it started running like garbage, hardly idled, had to be REAL easy on the skinny pedal or it would stall and it felt as if only 1/2 the pedal range was there if that makes sense, I had about a half a bottle of seafoam in the closet and split it between the tank and carb (figuring it wasn't going to hurt much at this point), essentially just dumping it down the carb without it running, I let it sit 10-15 mins and proceeded to drive it like it was stolen lol, cleared everything up and has been running great since.

Still havnt seen anything (product wise lol) that's shocked me as much as the seafoam on that particular day.

 

I do use seafoam in the gas and to clean intakes, I also use it in my chain saws, both of which are 25 years old and going strong. When I'm not using the saws I remove the plug and fill the cylinder with seafoam and put the plug back in, stand it up in the corner of the shed till the next time I need it. Starts on the first pull every time.

 

30

 

That's probably why you never heard of it before.

 

I have heard the old water trick, not so sure how well it works on newer vehicals with electronics.

As far as sea foam, love it, works great. Every time...

For you xj guys, u can pour it slowly right down the TB. The only time I use a vaccume hose, such as brake booster, is when there is a mass air flow sensor before the TB.

 

I run Seafoam in all my vehicles' gas tanks every 2-3 months. I get better MPGs.

I'd like to know more about this water trick. I'm 23 and I've never heard of this either. I have a '77 Dodge truck that has a problem with stalling and just not wanting to stay running until it warms up, and even then it idles rough. I'm thinking maybe running water in the carb would help.

 

Pretty easy. Get a cup of water, preferably something like a Dixie cup.
With the air cleaner off, hold the engine RPM at 2000 RPM or higher and dribble the water from the Dixie cup, which you've pinched to look like a spout on top, into the carb or throttle body. Go slowly and the engine will bog a bit. Stop and let it recover. Repeat til the cup is empty.

FWIW, I don't think this is a solution for your Dodge truck's problem, but it would be a fun experiment.