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if it is a vortec, there is a fuel line under the upper intake that goes from the manifold to the injector. check it for cracks and leaking or the injector itself.

EGR Valve

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โˆ™ 2015-07-16 18:21:21
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Q: If a 1992 Chevy S10 4.3L feels rough when idling what could it be?
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