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10-04-2009, 12:10 PM | #1 |
Junior Member
Join Date: Feb 2009
Location: QLD australia
Car: BJII 2003 Mazda Astina
Posts: 22
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BJ Fuel Consumption
Hey guys just wondering if anyone could help me try to narrow down what is causing my Bj astina 1.8l to use so much fuel? The car is stock and i only get about 430kms around town. Could It possibly the o2 sensors or blocked injectors???
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11-04-2009, 07:11 PM | #2 |
Banned
Join Date: May 2006
Location: Brisneyland, Queensland
Car: 2002 Mazda Frankenstina
Posts: 2,868
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I have a 2.5" cat back exaust and a cold aid intake and my BJ 1.8 normally averages about 450 km per tank around town, so i think your car is performing normally. It all depends on how heavy your right foot is. My car can vary from 370-550 km per tank round town depending on how I drive it. I do remember my car being a lot more economical when i first got it, but that was pre mods and i was driving to a different job that involved a lot less stop start traffic
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11-04-2009, 07:44 PM | #3 |
Junior Member
Join Date: May 2007
Location: Syd
Car: Bj Protege 323
Posts: 62
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That is also pretty much what i get with my BJ using premium. Although I have been using Shell 98Octane for the last few weeks, and I think I am getting better mileage. Still waiting to see how i go with the current tank before I make that assumption.
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11-04-2009, 07:49 PM | #4 |
AstinaGT Regular
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i get 500 if i drive like its double demerits all the time and 600ish on freeway around town average is 450...mines a 2L btw with a cold air intake kit as only change
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2002 Mazda Astina 323 SP20 |
12-04-2009, 10:03 AM | #5 |
Banned
Join Date: May 2006
Location: Brisneyland, Queensland
Car: 2002 Mazda Frankenstina
Posts: 2,868
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I recently had my car dyno tested and the mechanic that did the test was rather surprised at how rich it was running while doing the test.
When i get my hands on a scanner I will put a copy of my dyno results up for all to laugh at. Other users have said that replacing the stock ECU with an afternarket ECU can make huge improvements in fuel consumption and give you a decent power boost as well. Personally I dont think it is possible to get the fuel consumption that they advertise it should get. Maybe if ur a grandma and never rev past 2000 you might. |
12-04-2009, 10:13 AM | #6 |
HONEYWELL REPRESENT
Join Date: Aug 2005
Location: Salisbury - Inner City
Car: 1997 BA Hardtop - Had a 2003 BJii J48 Sport20, and 2x bg SOHC astina hatches
Posts: 5,011
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i drove up to bundy the oter weekend on one of my stupid crusadies right and i got up there and back on 2/3rd's of a tank. that was 700km's too. doin about 120ish in one day. i think its just the way u drive her. plus i use 98 or 95 octane fuel too. so thats help's.
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12-04-2009, 03:57 PM | #7 |
living in the past man
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yeah its about right.... be worse if it an auto usually, unless of course your slipping the clutch, double declutching, hard acceleration....
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1997 BG5 Subaru Outback - Now with STI boost... |
13-04-2009, 02:50 PM | #8 |
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Join Date: Mar 2008
Location: Alstonville
Car: Ford Focus LV XR5
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BJ SP20 I av 7.8L to 8.1 per 100 kms with a 55L tank I get anywhere from 650 to 700 kms but I dont live in a Capitol City
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13-04-2009, 03:10 PM | #9 | |
HONEYWELL REPRESENT
Join Date: Aug 2005
Location: Salisbury - Inner City
Car: 1997 BA Hardtop - Had a 2003 BJii J48 Sport20, and 2x bg SOHC astina hatches
Posts: 5,011
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Quote:
my x lives there. but man i love the drive in from brisbane hey
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13-04-2009, 08:01 PM | #10 |
Moderator
Join Date: Oct 2005
Location: Ipswich, Queensland
Car: 2002 Mazda Astina SP20 2006 Mazda 6 GY Wagon
Posts: 9,769
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I was getting 650kms/tank over just this weekend, and that included a lot of touge runs & highway driving.
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14-04-2009, 12:45 AM | #11 |
Senior Member
Join Date: Jun 2008
Location: Auchenflower, Brisbane
Car: Blue SP20
Posts: 2,782
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If it wasnt for the awesome twisty on the way down and up dorrigo i would have got about 700-750.
Had done like 620 with 1/4 left. |
16-04-2009, 12:25 AM | #12 |
Junior Member
Join Date: Mar 2009
Location: geelong
Car: mazda astina 2000
Posts: 7
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my bj gets 320 on half a tank. i am very happy thats mixed town and highway
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19-04-2009, 08:17 AM | #13 |
Banned
Join Date: May 2006
Location: Brisneyland, Queensland
Car: 2002 Mazda Frankenstina
Posts: 2,868
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So far im over 500kms round town driving off a tank, I'd say i have another 50 km left before i have to fill it up, But I was wondering have you checked your tire pressures lately as they can cause a lot of extra fuel to be used if they are soft.
My car gets over 350 km off the first half of the tank, but the other half is a different story, gone in 100-150 km.... |
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