My 1986 Mazda B2000 has been intermittently hesitating and stumbling during periods of acceleration. This is especially apparent when it is cold but it also does it when it is warm. Any tips?
...a tankful of crap. Happened to me once, long ago... close examination revealed pinhead-size drops of water suspended in the 'gas'...draining the tank was insufficient; had to tear down the carb to get it all...
Could also be numerous other things--like clogged main jet(s) or emulsion tube(s)-- or a combination.