2.3 turbo Problems
Okay I have been reading this forum and a few other trying to figure out some answers to my problems. So here's the story, I have a 1986 SVO motor i put into my sand rail, I had MSII installed and tuned by a local shop, Everything was running fine for a week or so, but then it started running rough. I started with plugs and wires, no change. Moved on to the cap and router, still no change. I drained the fuel changed the pump to a new 225gph inline pump, fuel pressure is 40psi at idle. Also I checked the timing and set it at 10#, the MSII says 18# advanced timing? im not familiar with MS. I changed the manifold gasket and turbo gasket. well now it idles smooth well atleast better than it was but it wont rev past 3800-4000 rpm. So i thought that it might have been the ignition module, changed that no change. So after all this changing and swapping of parts it still doesnt run right. It will build 10psi of boost(supposed to be 20psi) and then cuts out and backfires and shudders at 3800 rpm, where should i look next?