Fresh rebuild on SR power cuts out when I mash it.

[Grambos13]

I just got my Redtop SR back in the car after rebuilding it. It will idle fine when I first start it up but after it gets a little warm 30 sec or so it starts ti bounce arround from like 300-900. It drives somewhat smooth if I only let it have about 15-30% throttle but as soon as I try to mash on it at all it just starts to loose power when it starts to build more the 3-4lbs of boost. I've had a vac leake before and it does not buck like a vac leak. It just seems like it is starving for fuel or something. When it starts idleing bad a little black smoke comes out and the plugs are BLACK and wet. I've checked all potential vac leaks, o2 sensor, timing and I still cant find anything wrong. I'm running out of ideas and am starting to wonder about my ecu...It worked fine before the rebuild. Any ideas would be awsome!

[ILikeMy240sx]

Black smoke + black and wet plugs means your are running pig rich...

If you checked all the sensors like TPS, O2, Timing, etc, etc I would check to make sure you are getting sparks on all plugs and test to see if your injector rings are still fine.

[JNM240]

If it starts fine and idles fine when cold but starts giving problems once warmed up, i would check your coolant temp sensor. Seems like it isnt letting the ECU know that the car is warmed and is still dumping gas like its cold.

[Grambos13]

I'm going to check all this stuff today. I'll let you know how it goes. Any more ideas would be great.

[Grambos13]

timing was retarded 1 tooth on both cams....

[Grambos13]

I still think I need a new coolant temp sensor cause My idle is still pretty sh*tty and it is still running way ritch...I should probably get an adjustable fpr. Thanks for the help

[Grambos13]

coolant temp sensor made my car run a lot better! Best 17$ I've ever spent

[JNM240]

Awesome!