i have recently swapped a d16z6 head on a d15z1 block. i have removed the oil jet but still no oil. i have also replaced the vtec solenoid with a known good one. i checked the oil pick up for any sludge and none. this is the second head this has done this to and the first one siezed the camshaft into head and snapped it in half. im confused on why i have no oil or low oil pressure. need oil