Question
I'm having trouble w/ both type valves %26 it's the same on both valves. I have a 5 valve system and #2%264 are not coming up to FULL pressure. Causing the heads not to pop/come up. Each line has 4 heads. I have replaced the solenoid on the #2 valve and still the problem remains. HELP?

Answer
Make sure that the flow control for the valves is open a little more than halfway.  Also make sure that your water supply valve is fully open.  Check out the website below for a good tutorial on valve troubleshooting.

http://www.irrigationtutorials.com/faq/heads-do-not-popup.htm

http://www.irrigationtutorials.com/faq/repair-valve.htm