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Faunsdale, AL | Unless they have been changed, injectors are likely beginning to fail. What looks like oil is most likely carbon mixed with unburned fuel.
I bought one like that but just the cloudy smoke. Got a friend of mine with the tool to remove the injectors and the tester to check them to take on the project of finding the bad ones. Turns out it was one. I had an engine I had pulled out of an older 9600 that we had been running before. He went through all 6 injectors from that engine before he found one good enough to put in. Both engines had something over 5000 hours.
You may save some time identifying the bad one by cracking the injector lines loose one at a time. It will have a more obvious effect when engine is cold before it gets warmed up. Once cylinders get good and hot a marginal injector won’t have as much of an effect.
Edited by ccjersey 10/12/2025 09:23
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9600 combine with 7.6 blowing blue smoke
