I have twin volvo penta diesel d3-160 with 300 hrs.
One engine is overheating at 3200 rpm (100 celsius) but not loosing coolant.
We have detected combustion leak in cooling system with combustion leak fluid tester, (fluid changed colour from blue to green), taken engine apart, pressure tested head and exhaust mainfold, changed all gaskets, and it is still overheating.
Could it be that there is some very small leak in exhaust mainfold which pressure test couldnt find? Or could engine block been porous, but not loosing coolant?
Thanks for answers, Josip
One engine is overheating at 3200 rpm (100 celsius) but not loosing coolant.
We have detected combustion leak in cooling system with combustion leak fluid tester, (fluid changed colour from blue to green), taken engine apart, pressure tested head and exhaust mainfold, changed all gaskets, and it is still overheating.
Could it be that there is some very small leak in exhaust mainfold which pressure test couldnt find? Or could engine block been porous, but not loosing coolant?
Thanks for answers, Josip