Hi folks, I am not much of a mechanic. I'm a rock Drummer. Unfortunately that means usually broke so Fixing ain't a choice. And to be honest beating the hell out of stuff with sticks and mechanics don't really mix Lol...
Anyway to the topic at hand. A friend called me for help cause he has a 1999 T444E international cube Truck and he has an interesting problem. He called me cause International is offering their Servicemaxx software free so I ordered a cable to enable me to make changes to governor and cruise in an IH bus I use for the band.
On to his problem it's a 99 T444E manual tranny. It start good. it idles well. No codes. Did the sensor test and injector test. all looks good. But when you accelerate hard parked or driving. It seems to accelerate good to about 12 to 1500 RPM then it begins to sputter and blow a large cloud of white blueish smoke up to about 2000 RPM Then accelerates to the governor and sits there just fine. This sputtering and white smoke only happens through the center, during acceleration, under load. I watched and compared the desired injector pressure and actual injector pressure through acceleration and it matches. There is variance but it's higher or lower sputters the same either way.
Odd **** I did find Is the engine temp has to get to 80 degrees Celsius to run the KOER tests. It took a little long to get there and after the test it had dropped back into the 78 range. After idling over an hour, the software was showing 80 degrees and I verified that by easily holding my hand on the valve cover and the rad hose. Even Driving it the temp never got above 92. another odd thing was voltage never got higher than 13.2V and that was only during deceleration or idling. Voltage actually drops to as low as 12.4v during acceleration and sits at about 12.6 12.7 volts at cruising.
I may be wrong but I assume the temp is a leaky or stuck open thermostat and I'm guessing it probably needs a new alternator. But neither increasing the temp during the drive or the lowest voltage being at the top end when the engine was through the sputtering phase seems to correspond with the issue. We also cracked the drain on the fuel filter and found no trace of water in the fuel. It also isn't going through antifreeze. This is an issue that has been going on for a long time,
Anyone have an idea cause I'm out of em. I'm not a mechanic so my assumptions are no more than useless opinion.