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You are watching: 2011 honda crv spark plug gap

Owner of a 2008 Honda CRV EX having actually 76k. Since the acquisition the car had the majority of ups and downs on mileage fronts. Originally this vehicle noted on a avg 24-25 mpg for regular gas. Live in CT area and also use mobil or shell 87 grade. Recently when the car touched 70k, made decision to carry out the service myself. It had actually OEM denso spark plugs and was argued to acquisition NGK iridium plugs because that it. The was discussed its pre gapped to manufacturing facility standards. Replaced the plugs, waiting filter and also did a throttle body and MAF sensor. Automatically the mpg freaking dropped prefer hell. That dropped to roughly 17-19 mpg. The was yes, really frustrating as whole tank that gas listed me roughly 250 come 260 miles. Visited stores and got the initial OEM thick plugs and replaced it with NGK, yet even climate no luck. Burnt approximately 6-8 tanks of gas, yet no improvement. I was yes, really frustrated and got all the fluids checked and replaced, however no luck. Lastly I determined to take it garage to gain the ECM module reset. The whole reset job costed me $250 and also when checked the plugs were clean. Burnt about 2-3 tanks that gas yet no luck. No human being or computer listed information on any kind of issues with the vehicle. This was yes, really frustrating.Finally was reading through some articles and also some professional had mentioned that plug which come pre gapped to factory settings sometimes can not it is in correct. Honda recommends because that CRV having actually plug gaps to 0.4 come 0.44mm. The plugs I acquired was 0.42mm. The had also mentioned the close space reduces mileage and also readjusting come larger void sometimes have improved usage in few vehicles. Acquisition this a hunch i regapped the plugs come 0.45mm. Go a hand-operated reset of the ECM by disconnecting the battery terminals and shorting the wires to clear any type of charge retained. Reinstalled the plugs and also connected everything. Began the vehicle and let it idle to relearn everything for 15-20 mins. After ~ warming increase shut the automobile to save the learned parameters and also then started again to take it a check drive. Remarkable thing to be the vehicle was yes, really really smooth and also was gliding. It was quite surprising and filled the automobile with a whole tank of gas. It began averaging come 24-25 mpg again and also freaking ride is smooth choose hell. I am yes, really awestruck how every one of a sudden this distinction is do to rise the mileage when it is regapped come 0.45mm. Periodically it even gives me 26mpg. Deserve to someone who is expert aid me prize this an enig when no computer system or expert mechanics to be able to find any kind of issues prior to on the mpg mystery. Jeez currently constantly i am gaining avg 25 mpg. Yes!! its strange yet yet true.

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