so first off i am new here and i have a 1987 runner ...with a 92 22re engine...so my issue is that my vents are blowing out white smoke stuff and i think its the heatercore going out....and antifreeze leaks on my passenger floorboard...also when im driving my truck starts to jump alot like its sucking in to much air(vacum leak) or is it common for the intake gaskets on these to go bad and the maf senson is not compensating the extra air coming in ...thanks in advance all