Originally Posted by s346k

i used this method of decarbonization. except I wedged a big flat head screwdriver under the throttle and used my garden hose. unsure of the amount of water, but it was a lot. I made a video and it was about 5 mins long start to finish. it turns out the engine was running at about 4000 rpm most of the time. I kept spraying water until it stopped smoking black. I simply removed the air intake hose from the tb and sprayed it straight in.

this was prompted by a misfire which was caused by a piece if carbon actually getting stuck on a spark plug tip. big chunk. so I did the ethnic cleansing and put new plugs in it. no probs since.

Originally Posted by carbuff

Ive been avoiding the seafoam thing on my 2000 for this very reason. With the 2 extra cats and o2 sensors I dont want to f### things up. Ive done it before with single cat motors but the last thing I need is to have to replace cats and a bunch of sensors. I know these motors are really sensitive in that dept.

Originally Posted by HS00XJ

i done it on my 2000 (water) and i got a engine light.i never checked it i just removed neg cable and all is good.

Originally Posted by s346k

I'm guessing the engine would die from lack of ignition before hydrolocking. I didn't spray the hose wide open into the tb. I've done this before on other engines. the source of water isn't the issue, it's how well metered it is. the hose just made it easy to do the job in one sitting.

a lot of junk came out. there was a bunch of crap on the ground behind my jeep. I'm no rookie to engines, I just take different approaches than most.

Originally Posted by SeriousOffroad

Another Seafoam fan here.