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Old 03-19-2012, 05:47 PM
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Idle ruff after a hot restart

Having a issue only when its hot outside when I drive jeep for a while and shut it off and try to restart within 5-10 min os shutting it off it ideas ruff for 10-15 seconds then clears it up no engine light or any other issues help please
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Old 03-19-2012, 06:27 PM   #2
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We were just talking about that this past weekend. As I understand it the #3 injector is close to the exhaust manifold and when you shut the engine off it heat soaks the fuel in the injector, which causes the engine to run rough at startup. After a few seconds of running the injector gets fresh fuel and it runs fine.

Mine did it when I stopped for gas on a trip down an interstate Sunday, FWIW.

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Old 03-19-2012, 06:33 PM   #3
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i put the factory heat tubes around my injectors ... it helped put still does it every once and awhile... the tubes are available at your local dealership... it comes as one tube and if you cut it right you can have enough to do 3 injectors and if i remember right it cost around 5 bucks ..
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Old 03-19-2012, 07:01 PM
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Will it hurt anything or is it just a pain in the butt
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Old 03-19-2012, 07:14 PM   #5
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Won't hurt anything. It happens every time you shut the engine off, you only notice it when you start it back up quickly because if it sits very long it cools off and doesn't happen. If you can live with it I wouldn't worry about it.
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