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running rough until warm


Steve_RI
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Truck sat for a couple weeks....when I started her up, ran rough (like missing a cylinder), but went away after warm up.  Ran some Sea Foam for good measure, but this weekend it was running rough again until warmed up then,  poof - runs fine....like flipping a switch.   Anything obvious I should look for?

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Check your EGR valve, ive seen them hang open just slightly and cause this issue. Maybe a vacuum leak at the intake manifold, doubt that, but it is possible. Check your spark plugs, ive seen them have carbon tracing that would show similar symptoms.

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  • 4 weeks later...

Everything looked fine.  Then I went back to the recent issues I had with the fusible links.  I replaced them recently and changed the connection at the battery post.

 

jyVy0pK.jpg

 

I don't think II was getting a good connection the way I had it set up in the pic.  I fixed that and truck is running fine.  Don't know if this was the issue, but it may have contributed? 

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