When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a 94 F-150 5.8 . There is a loud rattle coming from behin the engine, It sounds like a valve or a solinoid opening and closing very fast. Anyone have a idea what this could be and if it is something that could cause a problem.
I will try to check for that tomorrow, but it sounds more like it is right behind the intake. And it realy rattles faster than any exaust leak I've ever heard.
Actually....it should rattle. I've found the aftermarket one to be noisier but probably because all the junk that was clogging my original from 184,000 miles.
INSPECTION
Shake positive crankcase ventilation valve and carefully inspect for splits or cracks.
If positive crankcase ventilation valve does not rattle or is damaged, replace positive crankcase ventilation valve.