Is there any credibility to this? Asphaltene

[Batman68]

(11-03-2017 )Rawze Wrote:  So I can only assume it is a common rail engine. you did not mention the year or the truck of model engine.

As far as the pressure relief valve or injectors go, it is as simple test. here it is...\
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Sorry about that. The engine is in a 2010 T660 Kenworth. No DEF. I am assuming it is a common rail system.