I got my injectors replaced at 26368 miles and I now have 27604miles. Just noticed a ticking noice anytime the engine is running. I checked under the hood and found a silver device on the passenger side of the truck down by the front passenger side wheel. The noise seems to be coming from that device. Can somebody advise what it might be. Its loud enough that even my wife can hear it over the radio while we drive. Thanks in advance.