Softronic Alternatives

[JFP in PA]

Because it is on both banks, it has to be somewhere in the intake. Check your vacuum level at the oil fill cap, should not be more than 5 inches of water;with the engine fully warmed up. If it is higher, your AOS is leaking vacuum.

[mnracing]

Originally Posted by JFP in PA

Because it is on both banks, it has to be somewhere in the intake. Check your vacuum level at the oil fill cap, should not be more than 5 inches of water;with the engine fully warmed up. If it is higher, your AOS is leaking vacuum.

Thanks, Normally I find these things with a smoke test. I have been avoiding the AOS wrestling match. I have a new one sitting here so that's an option.

I'm not a fan of throwing parts at problems, so I usually diagnose a far as possible.

[JFP in PA]

Originally Posted by mnracing

Thanks, Normally I find these things with a smoke test. I have been avoiding the AOS wrestling match. I have a new one sitting here so that's an option.

I'm not a fan of throwing parts at problems, so I usually diagnose a far as possible.

You can accurately test the AOS by measuring the case vacuum at the oil fil cap. An old oil cap, a barbed bulkhead fitting, a short length of vacuum line, and a digital manometer off Amazon creates a tool that will tell you what's what in about 5 min. without mussing your hair, and then you can test it anytime you want.

[Phat Hippy]

+1
Built my manometer set up soon after car purchase just to keep a eye out for the AOS. Better to catch it before it fails completely. Also used to catch a intake clamp out of position.