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When headgaskets, EGR, injectors go bad

2K views 4 replies 3 participants last post by  dhanna6powerstroke 
#1 ·
Question.....When headgaskets, EGR, injectors, etc. go bad or fail.....other than physical/visual signs, does any warning light (like a check engine light) come on? :dunno:

Just wondering.
 
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