Engine turns over but will not start unless u hold the gas, on 1995 Mazda Protege

changed filter screen on fuel pump,new fuel filter,new distributor cap and rotor,new wires and plugs,at my wits end also voltage regulator replaced,please help

by in Axton, VA on September 03, 2011
1 answer 1 comment
ANSWER by on September 03, 2011
Clean the mass airflow sensor.
COMMENT by on September 04, 2011
Thank U so much,is this the only thing that could cause it to act like this.