My uncle blew up the 5.0 engine in my '93 F-250.
While I'm buying a replacement engine, I decided to get one from a 2000 explorer since it has better heads & intake /makes slightly more power.
Now that it's all in and mostly hooked up, I come to realize that the engine the truck came with has a different firing order than the engine I bought. If I put the plug wires on to match the old engine, which doesn't seem like it should work at all, it will start and idle with rough but steady missing. If I put the plug wires on in the firing order the engine is supposed to want, it doesn't start at all. Obviously the injectors are still firing in the wrong order in both scenarios. I'm confused as to why it runs when spark and timing are in sync(though wrong), but not when spark is correct and the fuel is off.
How should I solve this? It seems like I should be able to extend the injector wires and put them in the right order so everything will be fine. Alternately, the 5.8 liter engines in 1993 had the firing order of the later 5.0 I installed, so maybe I could just swap ECU's?
What's weird to me, is it runs on the wrong firing order, as long as the injectors and spark are happening at the same time. But it won't even start if the spark timing is correct, but the fuel timing is still off. I feel like I'm chasing my tail.
