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Home >> Chevrolet >> 2019 >> Spark ACTIV, Standard Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 1.0L (L5Q) Or 1.4L (LV7) - Repair Instructions - Off Vehicle >> Repair Instructions - Off Vehicle >> Engine Block Cleaning and Inspection >> Engine Block Deck Flatness Inspection

Engine Block Deck Flatness Inspection

  1. GM3620965Courtesy of GENERAL MOTORS COMPANY

    Ensure the engine block deck surface is clean and free of gasket material.

  2. Inspect the surface for any imperfections or scratches that could inhibit proper cylinder head gasket sealing.
  3. Using a straight-edge placed diagonally across the deck surface, measure the engine block - cylinder head deck surface for flatness using a feeler gauge. Refer to Engine Mechanical Specifications (L5Q) , or Engine Mechanical Specifications (LV7) .
  4. If the cylinder head deck surface flatness is more than the specified amount, replace the engine.
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