Haven't messed with it yet, but maybe someone may know about this. When I activate the washer switch on, I hear a click at the pump. I'm wondering if the pump can be taken apart as it may be stuck from sitting a long period, or will I need to replace this? All the hoses are fine and no air leaks. Is there a way to unjam it? The car is a 1982 with 307 engine. Thanks.