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Join Date: Nov 2012
Location: Yuba City
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15psi is good but there is more to the test then just not exceeding the 16psi limit. most likely your HG are good but.....
1. why did you test them in first place?
2. did the pressure build really fast? or slow gradual rise--fast rise is bad but requires more testing- you want a slow and gradual rise.
3. once you built your pressure pull over and slowly release all the pressure and the fluid will expand and then tighten your cap and drive back home etc... once parked again see if any more pressure built up after the initial pressure release: little to no more pressure should of built up...
p.s. the test is only really accurate when your coolant is above 190 and your thermostat and gauges are working correctly.
currently-1999 F250 SBRB 4X4 7.3, 6.0 trans cooler, 08 mirrors, AIS Intake.
-2004 F350 CCLB 4x4: Sinister Race solutions kit, CAT ELC Edge CS, SCT SF3, PHP Ficm programmer, Procomp, Rough country, and Nitto goodies.
-2004 excursion, banks exhaust, 03 turbo, aem intake.
-2006 f350 king ranch, aem intake, 10 in fabtech, 40in tires, sct tunes.
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