Thread Title: Discussion: Injection Pump Pressure Control Valve and Varying Amounts of Electronic Control
This thread is a breakaway discussion of a subject that came up in another topic. Instead of hijacking the other thread
(Exhaust leak, loosing boost) we have moved the posts pertaining to this side topic into its own thread.
Here we pick up the beginnings of the discussion:
Quote:
Originally Posted by v8volvo
And one other thing to not forget about is the internal pressure relief valve, screwed into the pump at the drive end from the top... No big deal to fix it, you just carefully rescue all the pieces from the hole and reassemble the valve (being careful to let no dirt inside!) and reinstall. If the basic checks don't give you any progress I would check this next.
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Isn't a pressure gauge (and a way to plumb it in before the OUT bolt restrictor orifice) required to reset the internal pressure to spec?
IIRC, it's the IP internal pressure (that this PRV manages) that controls the IP dynamic timing advance.