So - found the issue. At least I'm pretty sure this is the issue.
One of the hoses is disconnected. Unfortunately, looks like a piece / part may be missing because the two ends of the hose in this pic do not go together - image is attached.
Anyone know what part may be missing or how I can get these 2 hoses connected again (I dont think just removing the remaining black part in the other end of the hose and finding a straight pipe connector would work).