my 1992 ford e-150 5.0 302
im geting blow by exhust coming out the oil fill tube
i had took it ford they told thats not good thats whats couseing my pinging but that can;t be to to i took all plugs out i found two with
oil 6 cyl & 4 cyl it only has 78k on it im hoping its the valve stem seal
i hope then i will a compression test on all cylinders and let you know
whats what and allso i have a ratle of the timeing chain may be that is caouseing the pinging but not sure any help please