Question
I just noticed today that the 8th and last station in my lawn sprinkler system is operating but with quite low pressure.  Actually the last two sprinkler heads in the line do not have enough pressure to pop up.  The other 7 stations operate normally.  On the 8th station, I can see that the pressure gradually gets lower as it gets further away from the water source.  I would say the first couple of heads operate close to normal.  I'm not even sure where to begin.  Any suggestions?

Thank you,
Greg

Answer
You either have a leak or restriction in that zone. Run the zone for say 10-15 minutes and see if you can find a leak. If you do not find a leak them start troubleshooting for a restriction in the zone after the last head where you see normal pressure. If you have anymore questions please ask and I will reply during the work week after the holiday weekend.