sorry, left out a key fact....
Pinging #1 cause is a dead EGR
the EGR must work in this engine, if not, under load it sure can PING like mad.
but for the EGR to work the CAT must be in-place or the EGR modulator goes dead.
the EGR lowers combustion temps greatly.
it keeps exh, valve cooler too.
and better MPG. (tad)
and with full advance , more power.
the ECU is tuned perfectly for a working EGR.
all G16's ping if the EGR is dead,
under load. (event timed perfectly)
Hot.
the EGR stops that and stops the hug NOX pollution, ( in fact this is how VW just got in trouble, for fibbing on the NOX)
some version (not in USA) there may be no DTC code 51. warning you of dead EGR, so just PINGS as your clear warning..
all ours give 51, or P0400 (1996+)
and some JDM engines, have no EGR at all.. and a matching ECU.... this is the hard way to defeat EGR but is illegal here.. just saying this to be complete, EGR wise.
ping list:
EGR dead or weak. (cat mission or rod'ed out , blown out,,etc)
head milled way too much causes huge CR increases.
huge carbon build up on top of piston and or combustion chambers (caused by running in limphome mode)
Timing way off on cam or spark (usually this retards, due to cam belt slip so....?)
crank pulley marks off, (internals slipped)
engine running lean (lean likes to ping) nice ring to that. (this and mix of above)
does this help?
Pinging #1 cause is a dead EGR
the EGR must work in this engine, if not, under load it sure can PING like mad.
but for the EGR to work the CAT must be in-place or the EGR modulator goes dead.
the EGR lowers combustion temps greatly.
it keeps exh, valve cooler too.
and better MPG. (tad)
and with full advance , more power.
the ECU is tuned perfectly for a working EGR.
all G16's ping if the EGR is dead,
under load. (event timed perfectly)
Hot.
the EGR stops that and stops the hug NOX pollution, ( in fact this is how VW just got in trouble, for fibbing on the NOX)
some version (not in USA) there may be no DTC code 51. warning you of dead EGR, so just PINGS as your clear warning..
all ours give 51, or P0400 (1996+)
and some JDM engines, have no EGR at all.. and a matching ECU.... this is the hard way to defeat EGR but is illegal here.. just saying this to be complete, EGR wise.
ping list:
EGR dead or weak. (cat mission or rod'ed out , blown out,,etc)
head milled way too much causes huge CR increases.
huge carbon build up on top of piston and or combustion chambers (caused by running in limphome mode)
Timing way off on cam or spark (usually this retards, due to cam belt slip so....?)
crank pulley marks off, (internals slipped)
engine running lean (lean likes to ping) nice ring to that. (this and mix of above)
does this help?
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