Popping noise coming from air cleaner. Not sure what its

615822

{"text":"A couple of months ago had new injectors installed. Was running a little rough and stumbling randomly at freeway speeds. Ran great at 55 mph. Yesterday developed a popping noise coming from air cleaner like a dead hole. Trucks no longer stumbling and is running great but popping noise is there. Seems to be running too good for a bad valve. Need some help please.","pics":"[]","canComment":true}