WE are missionaries in Guatemala and have a 1997 GMC
Jimmy, we never had a problem with it starting until we had the brake Master cylinder and Brake Booster changed (new from the USA) the day after they were put on we could not get the car to start. If the mechanic
poured gas in the carb. it started but only then. A new fuel pump was put on (also from the USA) and it only started 3 days in a row..( not well). We have had it back to the Guatemalan mechanic
he said the pressure measurement is around 50psi....he thinks the fuel pump that is new from the USA is bad...however we still think it has something to do with when they changed the brake cylinder and brake booster. We need help, our car has been at the mechanic for over 2 weeks...he has tried lots of things..he really does not know..we are frustrated to say the least...If we pour gas in the carb in the a.m. the car will start right up and start again if restarted within a few hours but by morning it just will not start...they have put in a new in line fuel filter, new fuel pump, cleaned the fuel injectors.....any helpful ideas....