I’ve noticed my diesel truck has been losing power, idling rough, and producing more black smoke than usual. After doing some research, it seems these could all point to failing diesel injectors. I’m curious what warning signs everyone else experienced before replacing or repairing their injectors. Did cleaning solve the issue, or was replacement the only option? I’d also appreciate recommendations for preventing injector problems in heavy-duty diesel trucks. I found this guide while researching and thought it explained the causes and repair options well: https://texastruck.repair/ best truck shop