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valve cover gasket

  1. 2005 STS Oil and Air Leaks GALORE

    Cadillac STS Forum 2005 through 2012
    My wife has a 2005 STS with the Northstar V8. The car started losing a lot of oil, I had a good diagnostic mechanic check it out. Here's what I have: Both valve cover gaskets are leaking small leak at the oil filter adapter PCV valve hose needs to be replaced variable valve timer solenoid needs...
  2. 03 cts changed valve cover gasket now hissing noise

    Cadillac CTS First Generation Forum - 2003 - 2007
    Initially it started to idol rough. Checked the error code and was a spark plug miss fire at 3. Decided it would be best to replace both coil packs and all six spark plugs. When I pulled up the coil pack the spark plugs were full of oil on both sides. So I figured valve cover gasket. Replaced...