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Cuts Out, Misses
DEFINITION: Steady pulsation or jerking that follows engine speed, usually more pronounced as engine load increases. The exhaust has a steady spitting sound at idle or low speed.^ Using Scan tool, check for a misfiring cylinder.
^ Check secondary voltage components for corrosion of EI module coil towers and spark wire ends.
^ Check spark plugs for cracks, broken insulator or improper gap.
^ Check wires for chafes or cuts.
^ Check for low fuel pressure and fuel quality.
^ Perform Injector Balance test to test for clogged injector(s).
^ Check for proper valve timing, broken valve springs or sticking valves. Perform Compression test.