I recently installed a cam, headers, AFPR, and a few other things associated with a cam swap (springs,timing chain and gears,etc.). I also put in 24# SVO injectors, I thought it would run at least until I could get a PROM burned or do one myself. But it is just way to much fuel, the plugs foul out within just a few miles of driving and there is a lot of fuel in the oil. Obviously I dont drive it like this, so I dont think I could have caused any damage to the engine. I am not ready to burn my own PROM yet, or want to pay $350 for basicly a fuel inj. constant change. So, I put the original 22# injectors back in, cleaned the plugs off and changed the oil. When I started the car there was still some black smoke coming from the exhaust and after a short drive it started running like crap and backfiring like it was doing when the plugs were being fouled by the 24#'s. I didnt pull a plug yet because I have to go to work, but I am sure I will find them fouled. There was quite a bit of fuel in the oil, do you think maybe I just need to change the oil again. Could a bad 02 sensor cause the plugs to foul?
BTW,it is a 1990 5.7 TPI.
Thanks for any help.

 

whats your afpr set at?

 

About 43 psi.

 

I checked the oil and it still smells like fuel. Should I use engine flush or just change the oil a couple of times to get the fuel out? Would a heated O2 sensor help keep it from running rich?