1993 4.0, unkown problem
I have a 1993 Ranger with the 4.0. I have never had a problem with it until a few days ago. The truck seems to start over fueling after it runs for a minute or two. It seems like there is oil mixed in but it smells mainly like fuel. It is smoking horribly with a white smoke after it has been running for a minute. IT is so bad that when I tried to drive it down the road it looked like I was fogging the area (it was at 7am so hopefully none of the neighbors realized it was me!). I normally pride myself on being able to fix my cars but this one has me stumped.
Here is what I know for sure:
The truck has 198,000 miles on it and this is the first major issue
It has been sitting for about 6 months without being started (I bought another truck and
was driving it.)
I did a compression check and all 6 cylinders are at 140 psi.
When I pulled the plugs there were a few that looked like they were ashy in color.
I replaced the plugs with new iridium plugs
There is water coming out the tailpipe when it runs (not coolant)
I replace the PCV Valve
There is no coolant in the oil
I did notice oil in the plenum but there was no oil in the PVC valve hose or the hose that
leads off the oil fill neck.
When I test drove it down the road it was lacking power
The check engine light is not coming on but does work
I am thinking about replacing the intake and plenum gaskets but wanted to make sure there isn't something else I need to be looking at before I go and put everything back together. I don't want to start replacing random parts so I am hoping someone has seen this before. Figures when I decide to start driving it to work again, something finally breaks.