hey guys is anyone else had or experiencing the same problem as we are it happens as mentioned going up a long slow incline generally losing power to the point where it shakes and then stops so far mechanics 3 of them have suggested from lifters (replacing them), to oil flushes @ $150 each (did 3 of these, now flushing the oil ourselves when the problem increases) we have replaced fuel filter, fuel pressure regulator (most improvement so far), spent $$$ on oil flushes (mechanics suggest this the problem, although it fixes it short term it has never been a permanent resolve we have come to the conclusion it is definately fuel related and at this point we are considering replacing the fuel injector o rings and the insulator on the underside of the caps
please if anyone has any suggestions we would love to hear from you.