2000 Mustang 3.8L New Eng barely Runs
My 2000 Mustang 3.8L threw a rod a few weeks ago. Got a Ford test engine and swapped it out. Didn't want to run at all at first so I put fuel into the intake via the vac hose and it ran...not well but she fired up. Subsequently, I went and QC'd everything and reseated all connectors. The engine fires up but runs terribly, hardly idles and "chugging". I don't know if they clean the injectors on these test engines or exactly what they do after testing to sell them. I was told that it is a 2000 3.8L with about 500 miles on it ( it is clean as a whistle) and if that is the case, it has been shelved for a decade! I went through the entire engine, new plugs, oil, etc. and transferred ignition coil & other misc parts. This engine is internally balanced and the old engine was externally balanced. I used the flywheel that it came with as the old one has counter balance weight welded to it. I suspect bad/malf/clogged injectors. Maybe the computer is different? Not sure exactly which direction to go in. Any insight would be appreciated. I figured it would be plug n play but it's not. I swapped the crank pos sensor with the old engine, no difference, idle motor swapped, no difference. I've been trying to avoid intake removal & playing with the injectors but may have to. Please, Help......THANKS!