***** how it is possible to get worse MPG with new spark plugs ?
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***** how it is possible to get worse MPG with new spark plugs ?
<FONT COLOR="green">Car: 2000 civic ex sedan MT
Mods: NONE - bone stock
Miles: 69,000
Driven: like a granny, shifting 60% at 2500rpm, 40% at 3,200 rpms
Clutch: stock still grabs okay
Spark Plugs: NGK at autozone... pregapped
Air Filter: OEM replacement
TESTED: full 10.5 to 11 gallons to almost bone dry.... have been doing this test almost every time I fill up
Weather: I'm in MN... weather does not seem to affect it very much at all
</FONT>
Okay I got this car 1yrs ago(new spark plugs)...right when I got it I always seem to get <FONT COLOR="blue"> 290-315mpg on full tank (hwy/city)</FONT>.... after driving 15K on the same spark plugs; the past 2 months I've been getting <FONT COLOR="red">350-370mpg on full tank.</FONT>
Last week I change spark plugs and they were fairly bad. BLACK & basically worn down to the crown. The motor did have better throttle response but nothing to get excited about...... BUT I instanly saw change in MPG after 1-2days of driving it.
WTF? I bought my civic to get good gas milage....
290-315 MPG on 11gals IMHO is not all that great
Any thoughts?
Mods: NONE - bone stock
Miles: 69,000
Driven: like a granny, shifting 60% at 2500rpm, 40% at 3,200 rpms
Clutch: stock still grabs okay
Spark Plugs: NGK at autozone... pregapped
Air Filter: OEM replacement
TESTED: full 10.5 to 11 gallons to almost bone dry.... have been doing this test almost every time I fill up
Weather: I'm in MN... weather does not seem to affect it very much at all
</FONT>
Okay I got this car 1yrs ago(new spark plugs)...right when I got it I always seem to get <FONT COLOR="blue"> 290-315mpg on full tank (hwy/city)</FONT>.... after driving 15K on the same spark plugs; the past 2 months I've been getting <FONT COLOR="red">350-370mpg on full tank.</FONT>
Last week I change spark plugs and they were fairly bad. BLACK & basically worn down to the crown. The motor did have better throttle response but nothing to get excited about...... BUT I instanly saw change in MPG after 1-2days of driving it.
WTF? I bought my civic to get good gas milage....
290-315 MPG on 11gals IMHO is not all that great
Any thoughts?
#2
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yeah not sure what happened, but thats shitty milage, thats like wat 28mpg.... o2 should be fine at 60k miles....sure you didnt get a bad batch of gas??
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Re: (DecentCivicZ6)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DecentCivicZ6 »</TD></TR><TR><TD CLASS="quote">sure you didnt get a bad batch of gas??</TD></TR></TABLE>
99% sure I did not get batch of bad gas.
I've tested MPG every time I fill up since the day i got the civic (yeah I'm pharanoid like that)
<FONT COLOR="orange">
It's as if my car hates new spark plugs or something...
When I got the car it had new plugs...... 290-310mpg
with 15K on spark plugs it gets ......350-370mpg
</FONT>
99% sure I did not get batch of bad gas.
I've tested MPG every time I fill up since the day i got the civic (yeah I'm pharanoid like that)
<FONT COLOR="orange">
It's as if my car hates new spark plugs or something...
When I got the car it had new plugs...... 290-310mpg
with 15K on spark plugs it gets ......350-370mpg
</FONT>
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Re: (Charlie Moua)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Charlie Moua »</TD></TR><TR><TD CLASS="quote">
WTF? I bought my civic to get good gas milage....
290-315 MPG on 11gals IMHO is not all that great
Any thoughts?
</TD></TR></TABLE>
my thought is if your getting 290 - 315 miles per gallon then your getting incredible gas mileage
WTF? I bought my civic to get good gas milage....
290-315 MPG on 11gals IMHO is not all that great
Any thoughts?
</TD></TR></TABLE>
my thought is if your getting 290 - 315 miles per gallon then your getting incredible gas mileage
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Re: ***** how it is possible to get worse MPG with new spark plugs ? (Charlie Moua)
Please do not rely on the pre-gap. I would check the gap again.
I just regapped my plug's and noticed better MPG and smoother rev's.
I am seeing 280 to 300 on 9 gal fill up. You got me beat.
I just regapped my plug's and noticed better MPG and smoother rev's.
I am seeing 280 to 300 on 9 gal fill up. You got me beat.
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Re: ***** how it is possible to get worse MPG with new spark plugs ? (thesmogman)
I'd definately check the gap out on the plugs. You'd be surprised at the number of little things that can make them close close up.
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