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my 1992 ford e-150 van 5.0 302 eng
did compression test on left bank #5 6# # 7 #8 150 all four ok
right bank#1 #2 # 3 # 4 o compression needle moves when cranking then it goes back down does not hold im woundering could it be a blown
head gasket this only has 78k miles on it that is impositble
or valve i allso have a ratling timeing chaine timeing mark fluctues not steady i wounder if this playes in the key roll
plus im geting blow back from oil cap could this be the reasion why
one half of the cylinder