I am looking for some information and help on where to begin my troubleshooting. Please read ALL before answering:
2005 Jeep liberty Sport, 3.7l V6 4WD
diagnostics codes:
p0300 (multiple misfire)
p0306 (misfire Cyl. no. 6)
p0304 (misfire Cyl. No. 4)
p0138 (O2 sensor circuit, high voltage (bank 1, sensor 2)
Whats been done so far:
May 2016: water pump and thermostat replaced
September 2016:changed coil packs and spark plugs, new PCV valve and lines, October 2016: brand new radiator installed along with new heater core ($$$$$$$),:favorites68:
October 2016: swapped out coil packs for known good ones, no change.
Spark plug No. 6 has GREEN CORROSION on the electrode (, No. 4 now has oil on electrode)
issues: misfiring on multiple cylinders both before and after spark plugs and coil packs replaced. (plugs gapped to factory .040), after PCV and lines to throttle body were replaced and I, now, have extreme sludge build up in PCV line to throttle body indicating excessive moisture in system. visible white smoke coming from tail pipe along with excessive water dripping from muffler. Engine does not overheat and never has. Absolutely NO Coolant in the crank case or Oil in the coolant (just sludge in PCV and lines to throttle body). I went to start the vehicle 2 days ago and when it fired up, I heard a clank noise. now it sounds as though a lifter is ticking bad as well as something trying to open and close but failing.
I am completely stumped on this and am in need of some serious direction on where to start. From what i understand based on some research i've done, is the intake manifold could be cracked leaking the moisture into the system and causing the misfire. But overall, everything is pointing to head gasket issues. Waiting on my endoscope to arrive so i can inspect between Cyl. No. 4 and 6.
I am really hoping this is not a head gasket.
2005 Jeep liberty Sport, 3.7l V6 4WD
diagnostics codes:
p0300 (multiple misfire)
p0306 (misfire Cyl. no. 6)
p0304 (misfire Cyl. No. 4)
p0138 (O2 sensor circuit, high voltage (bank 1, sensor 2)
Whats been done so far:
May 2016: water pump and thermostat replaced
September 2016:changed coil packs and spark plugs, new PCV valve and lines, October 2016: brand new radiator installed along with new heater core ($$$$$$$),:favorites68:
October 2016: swapped out coil packs for known good ones, no change.
Spark plug No. 6 has GREEN CORROSION on the electrode (, No. 4 now has oil on electrode)
issues: misfiring on multiple cylinders both before and after spark plugs and coil packs replaced. (plugs gapped to factory .040), after PCV and lines to throttle body were replaced and I, now, have extreme sludge build up in PCV line to throttle body indicating excessive moisture in system. visible white smoke coming from tail pipe along with excessive water dripping from muffler. Engine does not overheat and never has. Absolutely NO Coolant in the crank case or Oil in the coolant (just sludge in PCV and lines to throttle body). I went to start the vehicle 2 days ago and when it fired up, I heard a clank noise. now it sounds as though a lifter is ticking bad as well as something trying to open and close but failing.
I am completely stumped on this and am in need of some serious direction on where to start. From what i understand based on some research i've done, is the intake manifold could be cracked leaking the moisture into the system and causing the misfire. But overall, everything is pointing to head gasket issues. Waiting on my endoscope to arrive so i can inspect between Cyl. No. 4 and 6.
I am really hoping this is not a head gasket.