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a buddy of mine is having an issue, he has like a 94 mercedes not sure which model. Anyway the problem is that the car wont run...Ive narrowed it down to fuel, theres spark, and i assume there is air. He thought it was a fuel pump. I told him to save some money and check the fuel filter, also the relay or fuse or whatver for the pump. and then lastly do the fuel pump. My question is if there is anything i might be overlooking. I guess I would also check the injectors. Thanks you any help