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DOHC (Double Overhead Camshaft)

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What Does "Twin-Cam" Mean?
Twin-cam engines use two camshafts to operate the intake and exhaust valves. DOHC engines often have better power and efficiency than SOHC engines.
Symptoms of a Bad or Failing Camshaft Seal
Visible signs of oil leakage and smoke coming from the engine bay can point to a failing camshaft seal.

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What Is a Twin-Cam Engine?
Engines that are considered twin camshaft engines will have individual separate camshafts for the exhaust and intake valves on a cylinder head instead of a single camshaft to operate both the intake and exhaust valves in a cylinder head. The...
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Hi there. Turn the engine over by hand until the timing marks are aligned up. If they are facing up and the lobes are slightly facing down, then turn the timing chain a little bit until one of the camshaft...
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How costly is a rocker arm replacement on a 2008 Buick Lacrosse?
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