That can be caused by bad seals on the oil rail assembly where the ball seals into the rail.This is blowing an injector. Broke backing ring. Dead on hwy.
http://www.accuratediesel.com/shop/243.htmlThat can be caused by bad seals on the oil rail assembly where the ball seals into the rail.
Shop I deal with when Gary doesn't do my work said that low fuel pressure has caused this in several trucks that they've seen. I know my pressure is good though.