The owner and I have been sending emails back and forth. I received this from him
Quote: " i think that the fuel system and the lines need to be cleaned or replaced since it "misses" when it runs."

The car is a 2.2l 5spd

Is there other causes of missing . I have done searches and replacing fuel lines seems to cure the problem .

Should I be concerned of other problems? I am very mechanical inclined but funds are low at present.