08-17-2014, 07:41 AM
a good cat can hide a weak EGR function (three way cat does that)
but when the egr fails , this may cause the cat to overload.
make sure the 2 wire probe is clean inside its hole there in the dirty port.
i think the gasket is ok, it will tell you, as it comes off. looks ok, is.
no TB passages. no sidewinder; no mono port injection point.
all injection points x4 are in the manifold exit ports.
id check that thermoprobe first. see if its business end id clean, so it can Feel the exhuast heat directly
if its impacted clean it and see if 51s stop.
but when the egr fails , this may cause the cat to overload.
make sure the 2 wire probe is clean inside its hole there in the dirty port.
i think the gasket is ok, it will tell you, as it comes off. looks ok, is.
no TB passages. no sidewinder; no mono port injection point.
all injection points x4 are in the manifold exit ports.
id check that thermoprobe first. see if its business end id clean, so it can Feel the exhuast heat directly
if its impacted clean it and see if 51s stop.
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