Hey everyone we have a conundrum and wanted to see if someone more knowledgeable than myself had any ideas. The car will intermittently run rough and it burns through coolant supposedly it had used about 4 gallons in 2 weeks. When you coolant pressure test it the pressure does not hold and it will smoke like a freight train once started after doing the pressure test. Crazy thing is with a boriscope in the cylinders we cannot see any coolant and any of the charge pipes for the turbo I can't see coolant there as well. As much as it smokes out of the exhaust when pressure tested and then started up after the pressure test is performed you would think we would see coolant somewhere. Does anyone have any ideas or possible causes of this issue?