Hi all, ive just got my ski out after storing it in my garage over the winter, i re fitted the battery, started the engine and connected the hose pipe, all seemed fine but i noticed hardly any water is coming from the front side drains/exhausts, then it slowly kept raising the revs until it got to about 3k revs, then the temperature buzzer started to go off, i quickly disconnected the hose and turned off the engine, i thought it may have had a clog in one of the pipes to the side drains so took off the pipes and blew through them, then tried again but its just the same, any ideas please?