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What could make a 2002 Dodge neon run rough at idle and also have bad miss at high RPMs even after replacing plugs wires and coil pack?
Wiki User
∙ 14y ago
intake manifold leak. carefully spray gumout around the engine while its running where the intake manifold is attached. if there is a gasket leak the gumout will be sucked in and will make the idle smooth out for a few seconds. do this test quickly and spray as little as possible preferably on a "cold" engine.. you dont want any flash fires from hosing down a hot engine with solvent.
Wiki User
∙ 14y ago
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