Medium and Heavy Trucks
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Hi my name is***** will be glad to help. What is your complete engine model and serial number? Are you getting any fault codes?
thanks for the info. If the EGR cooler did not correct the issue you likely have either leaking injector cups or a head gasket issue. Is there coolant in the crankcase oil?
Look for white ash deposits at the exhaust ports to identify a problem cylinder. You can also remove and inspect the injectors but keep them in the same location for reassembly... Look for signs of coolants corrosion and damaged o rings on the injectors and inspect the cups with the cooling system pressure tested. For head gasket you can use a block tester to check for combustion gases in the cooling system. They can be bought at most auto parts stores. Let me know
Try doing an injector test..... Cut out all cylinders except the one you are testing.... The engine should stumble before stalling on a good injector. Instant stall means a weak/faulty injector.
Cummins recomends replacing them every 500,000
Thanks for the update. Yes that means the injectors pass. A weak injector will not continue to run
Question. If the EGR cooler was changed is the white smoke coming from unburnt coolant etc that is in the catylist and muffler? Or is the engine itself still producing white smoke?
If coolant were burning in a cylinder it would likely show up white deposits in the exhaust ports....
That is definitely a possible cause.... sounds like you are on the right track
Great news and thanks for the update. Hope you have a great weekend!