James Allen
New member
okay I just found out I cant get a valve job done on my 1990 buick riviera because the car have hydraulic valves. The problem is when I turn the car or on press the gas you could hear a tapping noise. I aslo been told it could be a gasket leak but what kind of gasket. The car oil pressure have been dropping low after driving it for a while so could that be the problem. I have a 1990 buick riviera 3.8