Bad Fuel Pressure Regulator

[fixkick]

p0300, random misfire,
or 301,302,303,304 mixed and wild>
no other dtc codes?
egr sticking open as you come to stop is real comon. and low rpm and stumbling.
key off
cold,
cycle egr main. push finger in , it, clunk it closes,. fully, repeat , thunk thunk, hum sounds good...

then remove top hose, of egr at TB ported vac port, at end of hose VSV >>>>>>port at vsv end of hose insert a golf tee.
egr is now dead. as a door nail., and hand closed, per above.
start engine
idles ok hot rpm 800? steady, regulated?
drive, run ok now,,, bingo egr bad. (more tests)
ir still bad , injection issues
chevron injector cleaner (the best. is Benzene, the best is that)
ok now? im not a snake oil guy but , removing injectors is pain.

i need to know all times its stumbles. (and if bogging or misfiriing, bogging is weak power, misfire is violent
hesitations
bogs
hard violent misfires
when? on hills only.?
and all DTC codes, need them all.
good luck