Engine smokes and rough Idle on start up
#1
Engine smokes and rough Idle on start up
I have a 2007 ram3500 w/5.9 and 6spd trans with 131000 miles on it. I bought the trk used and for the last couple weeks when the engine is cold and cranked up for the first time, it smokes and runs rough, and it smells like diesel when doing so. when the trk gets warmed up it quits. any ideas on what to look for.
#2
i would do a compression test, min spec is 350psi but an engine in good shape will be around 500psi, if it has a broken ring then its going to be at 150psi or less on that cylinder
if the test shows all good then since you would have the injectors out at that point i would have them flow tested
if the test shows all good then since you would have the injectors out at that point i would have them flow tested
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it dosnt have glow plugs
we have had more then one truck that has came in with a similar problem and they all cleared up after the engine was up to operating temp, they would white smoke on start up but as engine temp would rise they would run better and at operating temp they cleared up
it could also be an injector thats overfueling i was just saying that if your going to pull the injectors out i'd run a compressoin test while they are out, it has become standard practice for our shop, only takes about 30min and we dont charge for it, gives the customer peace of mind if they all come back good and if a problem cylinder is caught early enough it can be fixed with the block in the frame
also if i did happen to fail the compression test you would still need to have the injectors tested because an overfueling injector can cause higher cylinder temp in that cylinder and result in the broken ring, so you dont want to fix the symptom and not fix the cause if ya know what i mean
we have had more then one truck that has came in with a similar problem and they all cleared up after the engine was up to operating temp, they would white smoke on start up but as engine temp would rise they would run better and at operating temp they cleared up
it could also be an injector thats overfueling i was just saying that if your going to pull the injectors out i'd run a compressoin test while they are out, it has become standard practice for our shop, only takes about 30min and we dont charge for it, gives the customer peace of mind if they all come back good and if a problem cylinder is caught early enough it can be fixed with the block in the frame
also if i did happen to fail the compression test you would still need to have the injectors tested because an overfueling injector can cause higher cylinder temp in that cylinder and result in the broken ring, so you dont want to fix the symptom and not fix the cause if ya know what i mean