Originally Posted by HillsdaleHHR

FYI on the DI: direct injection fuel system operate at very high fuel pressures. A direct injection fuel system produces a rapid clicking and ticking sound that can be heard from the engine compartment. The sound is more evident when outside around the vehicle or when the hood is open. The sound is more noticeable during idle and is more frequent during a cold start, but lessens once the engine is warm. The rapid ticking noise on cold start up is the fuel pump building up high fuel pressure. When the engine warm-up is completed, the high pressure fuel pump will continue to tick at a lower rate of approximately one tick per second during idle. The clicking sound is the fuel injectors pulsing on and off under higher fuel pressures. These sounds are the results of a normal direct injection fuel system operating properly.

As for Agent O. and I, we made it through the funeral yesterday only to have my poor cousin get called from the nursing home that his mom is in to say they life flighted her to Borgess Hospital. Needless to say, Agent O. and I transported my mom and two of her sisters up to Kalamazoo where we waited half the night.