2000 Jeep Cherokee
4.0 L

well this morning i was doing a checkup on my jeep, checking things here and there ya know. i start it and let it run for a minute or so, then did what i was doing, after i finished that i started walking around the jeep and noticed the water that dripped from the exhaust looked really dark, so i rubbing my finger inside the exhaust and it came out like pitch fricken black. it didnt smell like oil or anything. so i was thinking of seafoaming the engine to see if that fixes it, like maybe the motor is really dirty inside or something? but money is tight so i wanted to see what you guys have to say first. also, will seafoaming help ,me get better mpg? i only get about 12-14 with 30" tires. thanks in advance guys.

 

thats carbon and condensation no worries

 

ok so the seafoaming should help correct?

 

cant answer that one ive read to many pros and con post on that stuff carbon is usually a sign of running rich ,or alot of short trips when driving the motr never get to operating temp so fuel/air ratio is rich all the time ,

 

ok good to know. i dont usually make many short trips though, so i guess shes probably running a bit rich.

 

some black in tail pipe can be expected when was the last time you gave a good stomp to the skinny pedal to clean it out a little

 

ha i drive pretty fast, but never really stomp it that much. i baby it a little.

 

every once in a while you gotta clear out her pipes, let it get into high gear and step on it so it down shift look in the rear view see if theres some gray or black coming out the tp

 

went out and did this a couple times on my way to get seafoam. didn't notice any smoke though...

 

thats good means its clean

 

Seafoam has good results, unless you have a tired old engine. But I agree, when you get on the interstate, hammer down and let her rev a bit, if you follow people going up steep hills like we have around here. You can see when they downshift and you can smell it.

 

Ok cool, thanks guys for the advice