1952 Packard timing

Posted by 29tons On 2020/5/16 4:39:56

According to the book i have the timing should be set 6 degrees before top dead center. When I put the timing there using a timing light the engine pings a lot. The brass adaptor between the carb and vacuum line was missing so I installed a new 1. The vacuum advance works when I put vacuum to it. The mechanical advance in the distributor works when I move it by hand and it returns as it should. The car is a 1952 Mayfair.There was a broken vacuum line from intake to fuel pump so I replaced it. The engine idles very smooth like a Packard should. When I got the car it pinged bad on acceleration. When I checked the timing it was no where near the marks. Thanks for any replies