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  1. High pitched noise after replacing upper plenum gasket

    1st Gen Hangout
    I have a 2004 Nissan Frontier 4X4, original owner, 240,00 miles, and running very good. In order to replace the valve cover gaskets I had to remove the upper plenum. I used a Fel-Pro gasket for the plenum. After completing everything I noticed a high pitched (almost electronic) whine coming...
  2. Troublesome VQ40DE

    Performance Mods
    Hi All, Hope this is the right forum/thread to post this, as there isn't really a great fit out there and this forum seems to be quite active with knowledgeable folk, so here it goes. Its a Navara, in oz, 2008 Spanish build 4.0 V6 petrol auto...its been around, with a healthy 355,000 odd km on...
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