Timing would b first ththing id check. Try turning. It down a lil.
When the carb was put on did you use the bakelite spacer which is about one quarter in thick. This keeps the heat from the carburetor and is much more efficient than the thin paper gasket. If there is a bakelite spacer be sure there is a paper gasket installed on each side.
SOURCE: 2000 Tacoma leaking fuel from evap canister
check your fuel vapor canistor for restricted vent line there could be a possible orfice valve inline towards tank wich would not let the tank breathe causing vapor lock
SOURCE: engine shut down after 15miles then won't start for half hour
Check the ignition coil, olso what year is the car
SOURCE: 1967 ford mustang 289, 4bbl
hesitating when from a standing start, then running well can be caused by having too big a jet size. I dropped the size of the jets on my Holley 4V, and it solved that part of the problem. The accelerator pump will push in too much gas, momentarily "drowning"the engine til you get enuff air to mix with the gas.
SOURCE: vacuum hose diagram for a 1979 ford 460 engine
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