doodski

i have a n 86 300E manual trans. i am having problem w/ starting. i brought it to 2 garages. 1st guy did a major tune up. replaces all the plugs wires and even the injectors. that didnt solve the problem. so i brought to the next garage they change the overload relay and another valve that didnt solve the problem. and somebody told me that it might be the airflow meter. but i dont want to spend anymore money until iam pretty sure thats the real problem. thats why iam asking your expertise.any info will be appreciated.