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Message: <blockquote data-quote="Bign" data-source="post: 64376" data-attributes="member: 36356">Howdy folks new here. I’ve got a 1998 gmc jimmy 4.3 vortex. Ran great for 5 years now it’s got hard start rough idle an random  miss fire. Take about 5 seconds to start idles up to about 1000rpm the spits sputters an dies. Second crank it stays running but very rough idle an exhaust smell weird. Has new computer,icm,cam n crank sensor, coil, idle air control, and distributor cap plugs an wires also. It’s burning a full tank every 180-200 miles. At high way speed it seems to clear up though. I have a code for o2 sensor an high voltage at icm. What direction do I go now ? Injectors ? It was just running like a new truck 4 months ago I drive it to an from work about 30 miles a day. Any help would be great thanks folks</blockquote>