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Old 09-04-2017, 08:09 AM
txoutback txoutback is offline
Learning to use the forums
 
Join Date: Jul 2013
Posts: 12
Default Re: Running extremely rough after being driven.

Mine is still starting and running smooth after 6 months. My problem was the donut gasket between the EGR tube and the upper intake manifold.

On mine (4.0) it's kind of hard to see, but there's a metal tube that pokes up into the intake manifold from below on the driver's side. The tube is covered loosely with a braided insulating jacket.

When you have a rough idle, try spraying some starter fluid up into that hole and if you get an idle surge that's your problem.

Last edited by txoutback; 09-04-2017 at 08:12 AM.
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