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N14 idling rough, a little white smoke and dies randomly

6K views 2 replies 2 participants last post by  cdwood388 
#1 ·
I have a freightliner with a 370 n14 celect. If it idles for about 15 mins it starts to idle rough and smoke a little white, rev it up and it clears up, every now and again it will just die and when you turn the key off and then back on it starts back up and idles rough and smokes a little white but once it's going down the road it seems fine, any ideas on this one?
 
#2 ·
It sounds like its getting air into the fuel system.It could be from the supply but it also could have a injector to head leaking compression back into the fuel around the injector airing up all of the injectors.You can use a sight glass to prove it and do that when its hot as you can get it or return the fuel return hose back into a bucket of fuel and watch the bubbles.When its this way you in most cases have black carbon in the fuel tank and filter.
 
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