4.9 valve clatter
#1
4.9 valve clatter
Hey all, '94 e150 with a 4.9l 6, 190k. Doesn't use any oil and mostly runs ok. The valves don't make any noise at idle, while accelerating or decelerating. But when going down a hill (especially at highway speed), and the van "catches up with the engine" so there's no load, there's a godawful clattering until I either let off a bit or give it enough gas to put a load on the engine again. Any idea what would cause that? Thanks!
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