Jake Shake!

[GM0406]

Getting back to this miss shake problem, they are going to check the jakes to see if they are causing exhaust valves to hang open.  I would be very interested if anyone here has run into similar problems.  Bill T.

[GM0406]

The jakes have been checked and are not the cause of the vibration or miss.  I have not heard the coach run yet, but Bay City DD shop tells me that the injectors got rid of the miss, but not the vibration which is pronounced at 1,400 RPM.  They have found that there is 0.024 endplay in the crank.  It should only be 0.014 max.  They see the flywheel moving back and forth, but the rainout on the flywheel is in spec.  Numa, the mechanic that is working on it, says we need to drop the pan and go in and replace the mains to avoid likely future damage.  They will also check to see if there are any other problems when they have the pan off.  If we still have a problem after this work is done, then the trans will have to come out for further checking.

Bill