fuel injector check

[mss5413]

I have a 93 240sx. I can smell fuel fumes, I think from the exhaust when I pull underneath my carport. It is pretty bad especially if I have been racing it just before I get home. I have a good O2 sensor, good MAF sensor, and good Throttle Position Sensor. Is this a sign of a bad injector O-Ring or just a bad injector? Thanks. Oh, and the car has 120K miles.

[navysnail]

sounds like the injectors are leaking, you can try replacing the seals but if that doesnt work, you will need to replace the injectors

also, when replacing the seals, make sure you push the injector straight in, not at an angle and put a little oil on the seals when you do it

[fatboy]

check around the injectors right after running it. you dont wanna have to tear it down then see the leak isnt at the injector. the injector o-rings are pretty cheap and are an easy swap though if that is your problem

[mss5413]

Does anybody know what the pressure drop should be on injectors. All four of mine are at about a 14 psi drop. It is a 93 240sx.