I had this problem last winter but it is getting worse this winter.
Engine is a 96 215 Ppump with 300k on it
Symptoms:
-Hard to start, as in coughs and sputters, rolls lots of white and blue smoke, starts on maybe 2 cyclinders,then the others come online after a few seconds of bucking, then rolls blue smoke until up to temp.
slight blue haze at idle.
-When warm and driving, sounds like a dead hole or fuel knock when loading in 4th gear over 2200 rpm
-When still cold and trying to go over 1600 rpm starts missing, popping shooting white and blue smoke out the exhaust
-Very quiet on cold start, can have a conversation right beside the engine
-Normal loud cummins clack when warm
-When warm runs quite nice, but still breaks up at about 2200 rpm when free revving. Fine below and above that rev range.
Thing that have been checked:
-Timing, set reset and rechecked, 17.5 degrees.
-Compression, cold engine, 400 psi dead on all 6 holes
-Injectors, 15 bar below spec (unknown miles) but all pop within 1 bar of each other and have good spray pattern. Tried a set of new injectors just in case, same issue
-20-25 psi fuel pressure at idle. New cummins lift pump, new torktek overflow valve
At this point I think I may have an injection pump issue. Before I take it off and just send it to a shop, I am trying to do as much diagnosis of it myself. Got an DV holder socket coming to inspect the gaskets and see if there is any damage.
Any other ideas?
Engine is a 96 215 Ppump with 300k on it
Symptoms:
-Hard to start, as in coughs and sputters, rolls lots of white and blue smoke, starts on maybe 2 cyclinders,then the others come online after a few seconds of bucking, then rolls blue smoke until up to temp.
slight blue haze at idle.
-When warm and driving, sounds like a dead hole or fuel knock when loading in 4th gear over 2200 rpm
-When still cold and trying to go over 1600 rpm starts missing, popping shooting white and blue smoke out the exhaust
-Very quiet on cold start, can have a conversation right beside the engine
-Normal loud cummins clack when warm
-When warm runs quite nice, but still breaks up at about 2200 rpm when free revving. Fine below and above that rev range.
Thing that have been checked:
-Timing, set reset and rechecked, 17.5 degrees.
-Compression, cold engine, 400 psi dead on all 6 holes
-Injectors, 15 bar below spec (unknown miles) but all pop within 1 bar of each other and have good spray pattern. Tried a set of new injectors just in case, same issue
-20-25 psi fuel pressure at idle. New cummins lift pump, new torktek overflow valve
At this point I think I may have an injection pump issue. Before I take it off and just send it to a shop, I am trying to do as much diagnosis of it myself. Got an DV holder socket coming to inspect the gaskets and see if there is any damage.
Any other ideas?