Misfire, losing coolant, and smoking
Hello and happy holidays. I am second owner of '99 1500 5.9l with 113,000, i bought it with 65,000 in '06. A year ago a code for a misfire on 8 came with no notice of performance problems, has maybe came up 4 times in that year. I did a tune up plugs, wires, cap and rotor as well as reroute the wires a few months before the code and replaced plugs after the code. A few months ago i replaced the water pump, due to a coolant leak and last week i replaced the coils and shocks.
Christmas at 4 am my cel starts flashing, a first. I stoped and checked oil and added a quart. The light remained on but stoped flashing. Symptoms were a rough idle, loss of heater. My temperature gauge is always at 1/4, in between the lowest temp and the 210 middle mark. That night and since it will fluctuate between that 1/4 and 210, never over. I have never seen my truck run at 210 though, ever.
I got home and had 3 codes p0300, 304, 308. Random/multiple misifre, misfire 3 and 8 cylinders. I replaced cap, rotor, plugs, and thermostat. Nothing was fixed including temperature and heater, which i was thinking was a seprate issue. She has started smoking at startup, blowing excesive amounts of white smoke. It looks just like a typical cold winter white smoke but too much for too long, but it does stop. Im losing coolant with no visible leak and my oil is brown.
Head gasket leaking coolant into cylinder causing misfire and white smoke? I am very amateur, and this is assumption on research. I dont even know what the head is. Sorry for long post id appreciate some thoughts.
Cliffs: Misfire, white smoke, brown oil, losing coolant, heater doesnt work