Jeep wrangler black soot from tail pipe - Wrangler Jeep Cars & Trucks

SOURCE: runs rough, black smoke, computer bank 1 burning too lean

Sounds like bad injectors, bad O2 sensors, and or too much fuel psi. Check the fuel psi against what the service manual says. If the fuel psi is too high, your regulator is bad. If the fuel psi checks out ok, you likely have a bad O2 or bad fuel injector(s).

SOURCE: Jaguar has black smoke coming out of the tail pipe

hello, my name is thedon052001 and i just pruchased the 1993 jaguar xj6 and there are some problems to it, the main problem is that the security system needs to be reset or taking out and i need an exhaust system and fuel pump what is the best thing for me to do

SOURCE: 1998 Jeep Wrangler Sport tail lights don't work.

if the bulbs are good, the only thing left is the headlight switch, or wires. black/yellow wires from the switch all the way back to bulbs. ck power to the bulbs first. if no power, then ck power at switch.

SOURCE: have a '89 jeep wrangler 4 cyl. manual.trans.

Your problem is fuel related. There is too much fuel entering the engine. If your vehicle has a carburetor, check the float level and needle valve for leaks.(also make sure the float actually floats...some develop leaks or foam type sometimes become saturated and sink) If injected, make sure that the throttle position sensor, map sensor and pressure regulator are working correctly and that the temperature sensor is also good.Last, check any vapor recovery system used...they sometimes can fill with fuel and allow raw fuel to re-enter the airstream and richen up the mixture. After finding the problem, replace the spark plugs as likely by now they are fouled.
As there are a number of items to look at, I can't give you an exact "fix" but if the vehicle was here, those aqre the items I'd look at first.
good luck

SOURCE: grand jeep cherokee 1997 white smoke /tail pipe

It is most likely your head gasket. Check for antifreeze in your oil and oil in your antifreeze. Or it could also be your intake gasket. Whatever you do. DO NOT put any kind of products like that into your motor. Those are strictly last resort options. Take the Jeep to a garage for an estimate and repairs. Only add those products if you are planning on changing the whole motor out for a new one!