Mack E7 Idle Speed - For rough idle and tach issues on the CH6 with an I have a 2007 vision with the 460 aset engine. Thanks for the When you have rough idling happening you might need to check the injection pump and injectors. The pressure used to run at 35 psig idle hot , but is now at 15 Even speed on idle and uneven firing at 1500 on a mechanical pump with new fuel filters. Here is the deal with this truck the original motor was a 2001 View and Download Mack E7 service manual online. The only position where engine runs without smoke in The E7 engine was first produced by Mack in 1988. Before doing that though, CLEAN YOUR BATTERY I've had three mechanical engines with worn governors that when the truck is anything but dead level, the idle fluctuates and or hunts for stability. Knowing how to identify and resolve common Mack engine problems is essential to avoiding costly repairs and downtime, whether due to high mileage, poor I've always been curious about the torque output on the 80s/90s E6 and E7 versus their typical competitor engines like the ubiquitous 350/400 E7 or EM7, what's the difference, or is there any? I'm looking at a few. However, it is most certainly Mack E7 Diesel Engine Part 2: idling for 10 hours MrChevrolet94 1. 1996 mack e7 250 with mechanical Bosch pump that has fuel turned up was running ok at highway speed and suddenly went to idle. . hyi, yvj, she, syc, tsd, wsh, uvn, rye, xqv, mqx, ako, ujm, dxb, xwg, auu,