I plugged the hose into the #1 spark plug hole rolled the car til both int.&ex.we're closed plugged the gauge in ...and it went to 0, what did i do wrong?do i need a different gauge than the one i set the hi-speed and barrel valve with?:help:

[TQ29m]

You need to know that you are on TDC. It has to be, or when you start putting in the air, it'll either run over you, or back over you. If you can get someone to hold the brake, it makes it easier. Open the butterflys, so you can listen in the intake, as well as the exhaust, and take off one of your breathers, so you can tell where the air is leaking. If it hasn't been run for a while, there may be enough fuzz on the valves to hold them open, that's the reason to open up everything, so you can tell where it is leaking, even if it's only 5%, it's nice to know where!. If youre not getting any pressure on the line side of the gauge, listen to it, it may only be a "fuzzy" valve, which you can ck, by a light tap on the rocker, which ever is leaking. Some guys get worried at 20%, I worry at anything over 5%, but shouldn't, I won't tear one down to find it, but I'll watch it. Good luck! Bob

Just one little tip that is a help...if you are leaking down a motor with some time on it or even a new one put a piece of tape over the 3/5 and the 4/6 exhaust port when you do the one next to it and if the tape blows you have a bad head gasket. Just a little way to check the head gasket at the same time.:thumb you need to have the rockers backed off to do this though