I¹m not sure I have the plumbing parts to connect to the input of the
combination valve. I¹m certain I¹m testing the same line. The output of
the MC and combination valve for the rear brakes is a 9/16 connection. I
guess the line may have an issue from the MC to the valve but does not
seem likely.
On 7/19/15, 1:31 PM, "Gmclist on behalf of A."
wrote:
> Neil Fonville wrote on Sun, 19 July 2015 12:32
>> 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.
> --
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> Upper Alabama
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