hey everyone i never thought id need to make a post on here becuase this website has been extremely helpful. but here i am asking for advice.
i recently encountered a broken oil filter housing diaphragm so i replaced the whole housing. previously it was whistling, i knew immediately it was the issue. after replacing it and starting it up test drive all was well. after about a 20m ride, the whistle came back on the new housing.
my vacuum when pulling out dipstick or taking off the oil cap is excellent.
so my question for advice i have is, where should i check next? i dont want to risk damaging the engine by continuing to drive but i have noi choice as this is my daily driver.