Quote:
Originally Posted by 97-civic-ex
On thing that really affects mpgs on Honda lean burn is EGR system condition. Are you getting any check engine lights? Make sure the check engine might comes on for a few seconds at start up to verify the bulb is functional. The main issue with the EGR system is clogged passages and sticky/faulty EGR valve.
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No check engine light at all. I figured that I would clean it out since I've read that it helps out with mpg. I just sea foamed the car and I've notice little improvements, especially with the idle. If someone thinks I shouldn't clean the egr passage ways please let me know.