Car starts up instantly, maybe alittle rough idle but does not hesitate in anyway when reving up stationary. Took it for a test drive and when under load it’s keeps cutting out. It hasn’t stalled but seems like it’s not getting any fuel under load! Could my injection pump be weak? Is this a sign that it is out of adjustment? I just purchased this car and there is a few loose wire not hooked to anything around injection pump area, could a unplugged wire be the issue? Please help!