ok i have an 85 efi toyota 4x4 i have completly rebuilt the engine rings pistons rods injectores had the head redone. it was runnin on three cylenders before i did the injectors when i got them in the truck ran perfect i took it for a spin to see how it goes, then it started runnin like crap lost all power i cant even hit 70 now, i used to be able to hit ninty on the three any suggestions on wat my problem is???