Question#4 cylinder not working. Acts like fuel shuts off after motor gets warm. plug is firing, new wire, new coil pack, new plug, new injector, compression 170, but after it starts missing you pull the plug its dry. even swapped the computer and still having same problem. the cylinder before and after are working and it is a rail injector system.
Answerfirst, the bad news. you have an Isuzu.
this is a constant miss?
seems you have it covered, but you need to get a noid light to plug into that injector harness. there could be a broken wire in the harness, or the driver in the ecu could be acting up.
also, if that is a dual cam, the heads have issues with cracking. we did one about 6 months ago. although it doesnt seem likely here, figured i would tell you the extreme possibility.
John
