I copied this from ficmrepair.com
** WARNING**
If you are working on the high pressure oil system (dummy plugs, standpipes, HPOPs, injectors, etc) as part of this exchange or in the future, remember to *always* hook up a battery charger and remove the FICM relay prior to using the key to engage the starter to purge the air. After you have seen the 500psi necessary of injection control pressure, allow the batteries to regain their charge, re-install the FICM relay, and start the truck as normal. This will save your FICM from certain stress and possible death.
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98 3500 QC 4X4 Flatbed HE351CW over Bullseye S475/87/1.25, L19 studs, PDD 5x14's, 4gsk, 025 DV's,ATS mani, build still in process
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