Truck Repair: white smoke, cummins isx, head gasket failure

Question
i have cummins isx 2004.after idling i got lot white smoke,and loosing coolant.

Answer
Hi Novica,
It sounds like your head gasket is blown, to confirm, take a clear jug and fill it with water, place the over flow tube from the coolant exspansion tank (usually comes off the filler neck) and place it in the jug of water, make sure the hose is submerged completely. run the engine up to temperature and you should see bubbles coming out of the hose in the jug. just from what you have described it sounds like head gasket failure.

good luck,

Matt