So I went back out again today to collect a bit more info. So I put the pressure gauge on the output of the combination valve. I got a consistent reading of 500psi.
My procedure was engine running, pump 5 times and hold for 1 min. Gauge went to 500 with every press and held at 500 without fluctuation. When I did this same procedure on the MC got 800-900psi. So do I have a clog in the combination valve?
Thanks for the input
Neil
You definitely have something strange happening between those two test points. Call me a nag if you want, but it sure seems like you are testing two different lines.
To verify it is the combination valve, repeat the test with the gauge on the input side of the combination valve.