b18apwr

I've got a 91 CRX w/ a D16A6 and am using the Greddy kit for an EG on my car. I have recently had oil start coming out around the valve cover bolts and around the oil filler cap. I have a breather filter on the valve cover, so there is a pressure release from the valve cover. All the bolts are torqued to spec. About the same time this started, I started throwing code 1. On my car, that's the O2 sensor. I replace the O2 sensor and about a month later I foul another one. I'm using a 12:1 FMU now. I've tried going 10:1 and 8:1, but the problem still happens. If there's anyone with any insight into either problem, please let me know.

Engine Mods are as follows:
TD04H turbo w/ built on wastegate
Vortech 12:1 FMU
Missing Link
MSD SCI
Blaster SS Coil
MSD Plug Wires
NGK BCPR6E-11 Plugs
MSD Distributor Cap

rioninja

Your fouling 02 sensors because of your FMU setup most likely. As for the oil, your likely to get a small amount of oil out of the breather due to crankcase pressure. If your getting a lot of blowby, then expect a LOT of oil.

civbeater90

make sure you use honda o2 sensor.aftermarket tend to go bad real quick.

technine

Did you ever try to reset the ECU and see how long it takes to come back? Did you check your wiring for the O2 sensor to make sure it's all nice and connected? How is the car running? Is there any problems while driving? Did you check your plugs? What do they look like? What is your timing at also?

b18apwr

Thanks guys. I'm gonna replace my O2 sensor today. I'm trying to get some 450cc injectors from a friend with a TSi, but he's not ready to let go of them yet. Hopefully if I get those and an SMC, some of this will go away.

RGAZ

Dude, change your PCV valve it may be faulty and pressurizing the crankcase.

The 450's and SMC will fix the O2 issue unless you are burning serious oil due to pressurized crankcase.

Randy