How to test for a restricted exhaust (catalytic converter)

Описание: 2003 Impala 3400 V-6.
How to perform an exhaust back-pressure test.

Symptoms:
very low power (could not accelerate past 30 mph)
pinging and detonation
Fix:
replace the restricted catalytic converter
Testing methods shown:
O2 sensor reading at wide open throttle (shows fuel delivery and direction for our low power complaint)
exhaust backpressure test using a gauge installed in the upstream O2 port
Tools used:
Snap-on Solus Pro
exhaust back-pressure gauge
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Playlist:
(Chapter 1) Misfire ID, Compression Test, Vacuum Leaks, Fuel Trim, Head Gasket, Restricted Exhaust, Low Power, DVOM
   • (Chapter 1) Misfire ID, Compression Tests,...  

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