I am rebuilding my 250 l6 ('77; integrated head) engine from my chevy
truck. It is my first rebuild. It has been more than two years since it was
running. everything has been done as explained in the manual, but it won't
spark plugs are firing
we pour fuel in from the top of the carb
carb overhauled (rochester varajet II)
all vacuum hoses are disconnected
no smell of fuel at spark plugs after intensive trying
One other thing:
What is the purpose of the threaded hole in the head between the 3rd and
fourth (counting from the front) spark plug. It seems to have direct
connection to a combustion chamber.
tnx for replying!