When i look at the intake manifold on side of motor it doesnt have coolant hose running to it like a v6 or v8. Is the intake manifold part of the head or am i not seeing it right. On a v6 you can just take off the manifold without touching removing the heads. I know the intake that the throttle body is connected to bolts to the head i can see that, but what am i missing here,do you have to pull the head to change the manifold gasket on a inline? How else would coolant be getting in cylinders?