I've started a post over on Rennlist but I'm hitting a brick wall with what else could be causing the problem. The problem is that the engine presents a no start until the DME temp sensor is unplugged, then the car immediately starts. I've also been chasing down a leak down problem where the rail depressurizes immediately after engine stop. The engine also runs pretty rich and cylinders 1 & 4 have had some heavy soot after running since the rebuild. In terms of diagnsotic steps this is what I've done so far:
-Checked DME temp sensor resistance with Clarks Garage (Temp sensor passes and is brand new from the rebuild)
-Checked AFM for deadspots and voltage matching Clarks Garage
-Replaced TPS as the one I had previously did not pass the resistance check from Clark's Garage. Adjusted so the click happens once the throttle begins to open and clicks off when closed.
-Replaced FPR as the fuel pressure didn't pass for idling or leak down test. After replacing the fuel pressure has been the same, never reaching over ~30psi
-Checked for injector leaks by removing the rail, putting cups under each injector and pressurizing the rail by jumping the pump. No leaks around seals or coming out of the injectors.
-Checked for Dampener leaks removing the vacuum line and pressurizing the rail the same way.
-Checked ICV for proper operation. I put a 12V power supply and saw the valve open slowly.
In terms of the pressure leak down im down to thinking it's the check valve at the fuel pump but the running rich & no start with the temp sensor plugged in really doesn't make sense. I was wondering if anyone has any ideas about diagnosing this beyond what I've done so far. The original post is here as well in case I missed anything:
https://rennlist.com/forums/924-931-944 ... oodoo.html
I appreciate any and all help!
