hello brother in toyotarians,anybody here know what is the inlet size for vacuum hose for 20v engine?is it 3mm or 4mm or 5mm? I suspect there is a leak with my hose vacuum cos when i off my engine there will be shhhh sound coming from the engine bay for bout 5-8 seconds, so im planning to buy a new vacuum hose,wht bout the spare tank hose? is it 6mm? thks for the helps guys