Originally Posted by dadouglas

Mine: 2005 Frontier CC V6 4x2 6 Sp Manual with 1600 miles.

Noise coming from engine anytime RPMs reach 2100. Sounds like marbles in the engine, pinging, etc. Another owner mentioned their dealer said it was caused by a bad plenum. It is really annoying. Took to my dealer who didn't want to do anything until a history was built up, and issue has been identified as systemic. I really want to love my new truck, but it's hard right now with this noise.

Help me to love this truck!