The car had po304 code and fuel in the oil. It has new coil, wires and plugs. I bought 4 cheep eBay injectors and replace #2 and #4 injectors. A fey days later po304 came back so I thought why did I buy cheep injectors. I replaced #4 with another one of the eBay injectors. A few days later #4 was bad again so I replaced #2 and #4 with new Denso injectors. Again po304 a few days later. This time I confirmed a bad injector by swapping #2 and #4 and got po302.The injector ohms at 30. If the top fuel line is supply and the bottom is return #4 is the first to get fuel. It has an in tank fuel filter so I am thinking of adding a fuel filter under the hood. What do you think???