The Main nozzle and easiest accoutrement

[zjautoparts Lee]

Moroso makes zjautoparts added busy aluminum analysis accoutrement (PN 62295) that places the adeptness valve in a alcove bankrupt with an O-ring. On top of the alcove is a baby nipple that can be affiliated to a exhaustion source.

Note that you can see the animation loaded valve (arrow) in the cut-out allocation of the tester. This way, you can use a active engine as a exhaustion source. If the spring-loaded valve stays abandoned (up), the valve is good. If the valve stays down, the adeptness valve is bad and should be discarded.

We’ve apparent that even new adeptness valves are sometimes bad, so be abiding to analysis your new valve as well. If application any tester, accomplish abiding it works properly. If you analysis 10 valves and they’re all “bad,” doubtable that your tester has a leak.

The best way to analysis a Holley adeptness valve is to administer exhaustion to the valve and see if the valve charcoal closed. If it holds vacuum, the valve is good. If exhaustion will not cull the valve closed, the valve is bad and accept to be replaced.

 The Main nozzle and easiest accoutrement we’ve activate to analysis Holley adeptness valves is the Mity-Vac exhaustion pump and the baby elastic assimilation cup that’s included with it. Wet the cup with saliva, abode the adeptness valve on the assimilation cup, and angle the Mity-Vac to the assimilation cup.