its a 1990 z71 with a 350 throttle body
theres a lifter in my 1990 z71 it will make noise then it will stop after awhile whats the
problem i was told the oil was ad it would fix it if i changed but it still does it
Most likely the lifter has a varnish build up, you could put a quart of Marvel Mystery oil and run it for a while to see if it will come out of it. But you most likely wind up doing a lifter job.
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