Question about Chevrolet Blazer
EGR need to be clean/replace.
Over time carbon can built up on the under side of the EGR valve and EGR air passage tube,
V6-262 4.3L engine?
Take off the EGR valve and spray WD40 or PB Blaster to help remove carbon.
A 22 rifle cleaning rod will help clean the EGR air passage tube.
Use a shop vac to clean off any carbon inside the tube and egr base.
MAKE SURE you use a NEW erg valve gasket to prevent exhaust leak.
Reconnect sensor connector.
You will see smoke when you start the engine. It's the remainder of the wd-40 cleaner.
Posted on Aug 06, 2010
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Posted on Jan 02, 2017
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