1999 Blazer no start, P0339 code

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#41

12-31-2022, 02:18 PM

GeorgeLG

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Join Date: Jan 2007

Location: Florida

Posts: 4,137

Video boroscope and iphone.

George

#42

12-31-2022, 03:23 PM

FtgSteve

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Join Date: Jun 2022

Posts: 22

Looking down each port under the plenum?

#43

12-31-2022, 03:34 PM

GeorgeLG

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Join Date: Jan 2007

Location: Florida

Posts: 4,137

I don’t remember what the visibility is like down the ports from the intake manifold side, I’m going to ask Les for an assist on this one, he has more recent engine building activity.

George

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