Recently I replaced my O2 sensor on the passenger side up front since I was getting the P0153 code and I noticed a slight dip in mileage. Well, mileage improved but the code still won't go away. It still appears, but less often. In addition, I've been noticing the smell of raw gas while driving, especially today. Now, I have a busted cat on one side so I've been use to this smell but today it was much worse than usual. I'm thinking I may have a bad injector (already checked the MAF and will check for leaks this weekend when I'm doing the clutch). So, can someone explain to me how I would confirm if I had a bad injector?

 

Well I know an injector that is stuck open will read a diffrent ohm than the rest.

A dripping/bleeding injector.....not sure. I've been told some Autoparts stores can check for that. I was told NAPA.

I've also been told to replace O2's with factory stock and not the aftermarkets that are not the same brand as whitch came out.

Hope this helps

 

Well, I got the O2 from Randy but considering my mileage was improved slightly, I don't think that's the problem. However, I will check the resistances of the injectors to see what the deal is. Thanks.