Q: what causes rough idle then not when engine light comes on, computer issue? on 2005 Dodge Dakota

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The code indicated is misfire cyl 5 but plug has been replaced, coil pack has been replaced, EGR valve has been replaced, have gone to 2 shops, including Dodge dealer but they cannot determine problem HELP!
(2) Answers
(3) Comments
Understand something, just because the dealer sells the model doesn't mean they know how to fix it.
What are the codes.

Customer Concern:
Engine is setting misfire codes. Has good spark and have swapped the injectors around. Compression is normal.
1. Connect a vacuum gauge. If the needle is erratic, check if an exhaust rocker arm has fallen out of place.

2. If so, carbon build-up on the valve is the likely cause.

You need to remove the valve cover which number 5 is and check valve train.
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