Sr20det running rich

[steele_fresh]

Hey guys I just rebuilt my sr20det and I have about 800 miles on it and I had to park it last week because it started running very rich even at idle according to my wideband which is brand new. So I drive it home and it done fine seem like it wasn't even running rich then I check all my plugs and they all look normal except cylinder #1 is looked like it just came out of the box and the piston was a shiny bronze..and clean and I'm not sure what to think of this? Is my injector bad or my coil? Havient checked fire yet but will today.

[ultimateirving]

Could be either one. I would turn the ignition on and engine off, spin the cas to see if the number 1 injector is squirting fuel.

Then you can test the coil pack with a screw driver and grounding it to the head. Spinning the cas should also produce a spark.

[steele_fresh]

I have fire so I ain't sure what's going on?? #1 piston looks washed but plug is white and oil smells like gas but car still runs fine wideband just reads rich

[steve shadows]

Are you just running a stock ECU or have any EMS etc? thanks

[steele_fresh]

Stock ecu with a apexi safc 2 and a z32 maf also had it tuned by fastech in Knoxville a few weeks before this problem accured