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How To Troubleshoot HEUI Systems and IAP faults. 164 Faults. 3126, C7, and C9 Cat Engines.
Have a small truck, small bus, or an RV with a Cat Engine in it? Then the odds are you have a HEUI system. These systems, while fairly simple, can be confusing to someone not familiar with the components. This video talks about the basic components, troubleshooting, and repair process of a HEUI system. Questions can be left in the comment ...
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