When you do injectors & all the oil drains into the cylinders, where is the oil coming from? The HPOP, right? could that be low & causing this?
Yeah, the oil that ends up in the cylinders when you do an injector change does come from the HPO system, but remember the HPOP is continually replenished by the LPOP. Keep in mind that the oil spouts on the injectors drain into the head galley and that runs down into the crank, hence the LPOP is always pumping up to the HPO reservoir. If all you have is 50 miles on the new squirters you need to give it some more time.......... and miles............. go wear out a set of rear tires and have some fun.