So my coolant system is having some issues guys. I’ve had to flush it several time due to rust. But besides that the system keeps pressurizing the reservoir tank usually while cold. Well I finally got the thermostat to open and that stopped for the most part. But now the coolant level sucks down into the engine when I hit the accelerator. I’ve done hydrocarbon tests and pressure tested the system and both came back how ya want em. Any info would be greatly appreciated.