mackey58 Posted May 4, 2020 Share Posted May 4, 2020 Hi folks .th ed 05 granite with a ai400.had the exhaust gaskets on #5and 6 then number 1 the bolts broke and was pushing the exhaust out of it and low power so our hired mechanic installed new bo li ts and gaskets .had whole right off.he was done last Wednesday I was off all week.today it acted like it lost its prime.i tried starting it and they gave it a shot of either. It started but now it misses .knocks for a min and #6 injector is ice cold. any thoughts how messed up it it Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/ Share on other sites More sharing options...
mackey58 Posted May 4, 2020 Author Share Posted May 4, 2020 300,000 miles on it Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450392 Share on other sites More sharing options...
Mack Technician Posted May 4, 2020 Share Posted May 4, 2020 Careful with ether, she could become an addict. He had lines off and got air in the system. Bleed the fuel lines inside the head and not at the EUP’s. CCRS are difficult to clear of air, more so than the good’ol E-Tech. Head bleeding means some fuel will well up in the head ports, you just have to live with it till it weeps out. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450394 Share on other sites More sharing options...
mackey58 Posted May 4, 2020 Author Share Posted May 4, 2020 Is that why it knocks for a second or two at start up Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450395 Share on other sites More sharing options...
Mack Technician Posted May 4, 2020 Share Posted May 4, 2020 🤷🏿♂️ bleed it. See if it goes away. Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450396 Share on other sites More sharing options...
mackey58 Posted May 4, 2020 Author Share Posted May 4, 2020 Ok and that's why #6 is cold air bound Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450397 Share on other sites More sharing options...
Mack Technician Posted May 4, 2020 Share Posted May 4, 2020 I’m assuming it wasn’t run until now? This is the first time you ran it after the repair? Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450398 Share on other sites More sharing options...
Mack Technician Posted May 4, 2020 Share Posted May 4, 2020 If it’s been out, and under load, it would have purged air lockup. Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450399 Share on other sites More sharing options...
mackey58 Posted May 4, 2020 Author Share Posted May 4, 2020 Yea ain't been out first start today Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450400 Share on other sites More sharing options...
mackey58 Posted May 5, 2020 Author Share Posted May 5, 2020 I ll suggest that he reads this Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-450406 Share on other sites More sharing options...
mackey58 Posted May 13, 2020 Author Share Posted May 13, 2020 Replaced # 5+6 injector fired right up.i asked my boss why didn't you just have him do all6 ur down that far and adjust the valves .got the evil look Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-451096 Share on other sites More sharing options...
Mack Technician Posted May 14, 2020 Share Posted May 14, 2020 Got’em full of dirt during exhaust manifold work? Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-451114 Share on other sites More sharing options...
mackey58 Posted May 14, 2020 Author Share Posted May 14, 2020 Yep but wouldn't that have made sense to do that when it's all open already Quote Link to comment https://www.bigmacktrucks.com/topic/62375-miss-rough-idle/#findComment-451130 Share on other sites More sharing options...
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