I deliberately didn't ask about idle timing earlier because without knowing the cam specs, it tells us nothing.
So vac leak is now off the list [ as the cause of low vac ] but many other internal problems can cause low vac. Wiped cam lobes, cam installed in retarded position etc.
So vac leak is now off the list [ as the cause of low vac ] but many other internal problems can cause low vac. Wiped cam lobes, cam installed in retarded position etc.
