Ford Explorer Loming Failure

Hello friend, I received this message this will serve you but I do not know what it is I do not see any attached file or something tells me like this. Thanks Julio

Hi, I'm among Rios I have a 95 gasoline Ford Explorer. I have the same fault as you. The fault is not constant in the beginning, it stayed as in 3 or 4 cylinders, the black smoke was laughed at the exhaust, we take it to the mechanic, the scan does not accuse any fault. Well I change the coil, cables, spark plugs, filters regulate the Sandad Lamda. Ok! Anduo a week maybe. We changed the diagnosis that was a balvele of the injection that did not return good was Iso Cleaning of injectors etc for a Marabilla month but now started again with the same.
My question is if you found a solve to the problem.

Hi, I'm among Rios I have a 95 gasoline Ford Explorer. I have the same fault as you. The fault is not constant initially, it stayed as in 3 or 4 cylinders left excessive black smoke because of the escape, the scanning is not accused of the mechanic does not accuse any fault. Well I change the coil, cables, spark plugs, filters regulate the probes Lambda. Ok! He walked a week perhaps. We changed the mechanic that was a injection valve that did not return good was IZO Cleaning of injectors etc. For a month he walked great but now he started again with the same.