I'm putting my top swap together. With the 1.9 rockers it sometimes doesn't seem to want to do the compression check. I can see some air bubbling up around the intake valve.
Here's what's weird. I put a stock rocker on the #1 intake valve. Turned the crank into it and let it sit. Held pressure about a minute before it started dropping. Without moving the crank, I pulled the rocker (since the valve is closed). I put the 1.9 on that same spot and look in and immediately I see the valve open quite a bit. I pull the crank back a bit, then go forward and the valve seems to be closed. Now it seems to pass the compression check.
I don't get much reading on the gauge, but what it does go up it seems to now hold. Is this inconsistency something to do with hydraulic lifters?
Thanks!
Also, can someone tell me what I should see on a good pressure check?
