Still lots of problems in Maxx Force software ,sometimes I cant get into ECM at all. Note I use Nexiq connector on Maxx Force engins I use 1939 protocol on all others I use 1708. If # 2 come up good on manual compression test valve cover has to come off ,check rockers & valve springs if all ok probley getting into bad /pluged injector. When you have a bad cylinder say #2 all it means is that cylinder is not working proper.ĭo Relative Compression test if # 2 comes up low, you will have to do manual compression test ( could be bad valves,piston /rings etc. some will do auto injector test, some you have to do it manualy 1 cylinder at time (it kills fuel to the cylinder you are checking.
When checking cylinders you can perform injector disable test, engine running ,temp obove 160.
