Are there any mechanics in the house!?!?!?

well this reputable mechanic aint no better than the other. im sure the box he is referring to is the air cleaner/filter box. wow he goes from saying its just the valve spring collapsed is the whole problem, now its "I think u got a bad injector" I wouldn't buy the injectors even it is a partial fix to the problem, simply bc its an electrical part and once its installed, there is NO refund for it, so by him borrowing them injectors, there aint no telling how many times they were installed and how old they are. I honestly think ur getting the run around from this supposed top notch mechanic. I don't give a damn how many recommendations he has, he aint worth the salt that drips from a donkey's bottom lip! its been what 3wk now that he has "diagnosed" it to a bad valve spring and now u need numerous other parts? I think he is full of the white speck on chicken poo, oh its chicken poo too.