Check the hoses and fittings for leaks, my soft lines were really worn down and the main line needed to be wraped to get it to stop leaking. Best method is a small bottle of soapy water, shake to snot out of it and put the resulting foam on the suspect areas. If there's a leak it will suck the bubbles into the leak.

1956 GMC 370 dump " 'Tater "
1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI

I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P