Medium and Heavy Trucks
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Hi my name is***** will be glad to help. If an EGR engine it could be the EGR cooler but in both EGR and non EGR engines it could be an injector cup leaking, cracked head or head gasket problem, cylinder liner leaking ( would have coolant in the crankcase oil). Let me know
Since yours is a 99 I believe the EGR engines did not start until 99. You will need to pressure test your cooling system to find the leaks with the injectors removed but only at a pow pressure not to cause a leak and inspect the injector cups.
That was a typo... EGR was 04/05 and later engines
Sorry about that....So your problem will likely be in the head or injector cups
Hi, Did you get this resolved?
Hi, did you get this resolved?