Hi guys.
Just throwing an issue out there for some thoughts.
Recently I've noticed the bottom of my RV is getting a streak of clean looking oil along the exit ramp and the general bottom of the belly is getting a little discoloured, brown oily look. I pulled the cowls (hate that job) and found the lower left internal cowl oily, the oil stain starting from the front cylinder (left side from pilots view). I noted some oil hanging off the induction tube bolts and the tube surface was oily as well. Pulled the induction tube off the engine after a run a& found some oil residue inside the tube, looked a bit oily up in the intake port as well. After shut down I hear what sounds like a pressure relief valve activating, gurgling sound around the front of the cowl opening. Cleaned it all up ran it and a after 2 hrs it's come back. I suspect a crack perhaps in the intake port somewhere or oil ring issues? No oil showing externally on the cylinder itself. Oil consumption seems to be slightly more than usual, about 8 hrs per Quart where is was usually 8.5-9 hrs per Quart.
Comps are good and the engine (IO360, 600 hrs) runs sweet.
Thoughts guys?
Just throwing an issue out there for some thoughts.
Recently I've noticed the bottom of my RV is getting a streak of clean looking oil along the exit ramp and the general bottom of the belly is getting a little discoloured, brown oily look. I pulled the cowls (hate that job) and found the lower left internal cowl oily, the oil stain starting from the front cylinder (left side from pilots view). I noted some oil hanging off the induction tube bolts and the tube surface was oily as well. Pulled the induction tube off the engine after a run a& found some oil residue inside the tube, looked a bit oily up in the intake port as well. After shut down I hear what sounds like a pressure relief valve activating, gurgling sound around the front of the cowl opening. Cleaned it all up ran it and a after 2 hrs it's come back. I suspect a crack perhaps in the intake port somewhere or oil ring issues? No oil showing externally on the cylinder itself. Oil consumption seems to be slightly more than usual, about 8 hrs per Quart where is was usually 8.5-9 hrs per Quart.
Comps are good and the engine (IO360, 600 hrs) runs sweet.
Thoughts guys?
Last edited: