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Old 12-09-2019, 12:00 AM   #40 (permalink)
Natalya
Engine-Off-Coast
 
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Join Date: Apr 2016
Location: Atlanta
Posts: 542

Red 2000 Insight (2017 through 2019) - '00 Honda Insight 5MT
90 day: 64.72 mpg (US)

Red 2000 Lithium Insight (2020) - '00 Honda Insight LTO
90 day: 67.3 mpg (US)
Thanks: 212
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If it's bucking in lean burn and you cleaned the egr passages then the egr valve is the main culprit. I'm not sure if it could be something else. I don't know how to test it unless you have a friend with an Insight and a good EGR valve you can try who lives near you. It's not super hard to pull the valve out.
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