Thread: bog/backfire

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dennyw<> the timing is at 36 total and around 16 initial if i come off that any it really runs bad . it backfires worse when it is cold then when you warm it up it mainly bogs but it will sometime give a spit, but definatly worse when cold. havent checked fuel press yet but it has new holly 80gph pump. floats are set to where if you rock truck a little it wil run out,(bottom of threads).distributor has 12.42 volts(not running) i have it wired to toggle switch(i bypassed column keyswitch.)and using a pushbutton start.also i took the truck to good mechanic friend and he switched vac hose to manifold i had it on ported,he set timing at 36total (he says)and readjusted air fuel it runs better but still does the bog thing.ordered new intake performer eps see if that helps