The End

The end of the week at least, the end of winter? Maybe . . . only next week will tell. As of right now, Koppenberg is a go, but they will tell us more by 2:00 PM tomorrow afternoon. They (the Christians) have canceled their race for the weekend, but maybe Sunday will be an open date and they can reschedule.

Took the truck back in for an emissions retest and probably introduced a variable or two too many. We replaced the EGR valve, the Throttle Position Sensor, the Idle Control Motor, the fuel filter, and a couple other things. The last test showed high levels of NOx emissions which is indicative of EGR problems (and possibly timing issues, but that doesn't seem to be a factor). Instead of just running back through with all the new parts, we decided to bypass the EGR solenoid which is how the computer tells the system what it should be doing with the though being open EGR = cooler combustion temp = lower NOx. Yeah, that part worked, but the truck failed for hydrocarbon emissions being too high.

I did some fiddling this afternoon, shook some chicken bones over the engine and didn't come up with much except that we need to check the operation of the EGR solenoid to see if it is doing anything. It didn't seem like there was any vacuum at the EGR valve. If anything can be determined, we might go for a re-test in the near future or we might put the truck in more capable hands that have ways . . .