Horrible Gas mileage D SERIES!
#1
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Horrible Gas mileage D SERIES!
okay i swapped in a d16Y7 into my 1995 honda civic cx, The motor is a 99 with 80k on it new t belt,waterpump,oil pump. but anyways i have had it in my car running as a dd for about two months and on a full tank i get about 140-180 miles. What is wrong with it? i also put a d16z6 IM on it before i swapped it in. i would think this d series would get over 250 miles off a full tank!? but i have tried adding injector cleaner stuff in the gas,seafom etc...nothing works. what should i look into replacing? fuel filter? fuel pump?injectors? etc... LMK what i should do you guys i baby this motor too get the most out of it but still the same and motor just passed emissions yesterday so its not running rich or anything. i did notice my i believe Co2/CO was high limit is 20.00 i got 18.888. thanks for reading any help will be appreciated.
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Re: Horrible Gas mileage D SERIES! (CivicUtah)
damn that is pretty bad, i get close to 400 miles per tank on my y8. Check yar fuel system to make sure you have no leaks of any sort, check the seal under the seat where the fuel pump is, and any leaks in the lines??
#7
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i had the same exact problem
20 mpg and truthfully i still havent figured it out. I just swapped it out for a y8 this weekend. Upon swapping i noticed my pcv valve is fubared
so go and get that changed and see if that works its a 5 dollar part. My friend said it was that when we were swapping motors.
20 mpg and truthfully i still havent figured it out. I just swapped it out for a y8 this weekend. Upon swapping i noticed my pcv valve is fubared
so go and get that changed and see if that works its a 5 dollar part. My friend said it was that when we were swapping motors.
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#12
check the pcv....no one ever changes them since most are a bitch and are under the intake manifold....its a cheap little part...was like 9 bucks for my hx....but for a cheap part if yours isnt working right it will make a world of difference in mpgs and idling
#19
Re: (-HONDA-)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by -HONDA- »</TD></TR><TR><TD CLASS="quote">NO NOT REALLY I HAVE REPLACED THE FOLLOWING: O2 SENSOR,fpg,PCV,OIL,INJECTORS,FUEL FILTER,FUEL PUMP, STILL GETTING 150MPG</TD></TR></TABLE>
EXPLETIVE, man! what else is there to change??
BTW, How are your driving habits? Lead foot? Hilly area? also, is that city, or HWY? (I forget)
EXPLETIVE, man! what else is there to change??
BTW, How are your driving habits? Lead foot? Hilly area? also, is that city, or HWY? (I forget)
#20
Honda-Tech Member
in my y8, i get roughly 300 per fill up and resulting in around 28-30 mpg.
How are you calculating mileage?
Do you:
A) just look at the tripometer and just call it or B) reset to zero at the last fill up and then do total mileage ran since then divided by the number of gallons filled up the next time?
Maybe a bad ECU?
How are you calculating mileage?
Do you:
A) just look at the tripometer and just call it or B) reset to zero at the last fill up and then do total mileage ran since then divided by the number of gallons filled up the next time?
Maybe a bad ECU?
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