km/tank majorly dropped
23-Jan-2007, 08:00 PM
#5
Originally posted by kIeRaN
well, he does have a point, but really it shouldnt be making that drastic of a change
well, he does have a point, but really it shouldnt be making that drastic of a change
23-Jan-2007, 08:12 PM
#6
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Re: km/tank majorly dropped
Originally posted by Fr0z3N
I went from getting 500-600km to the tank to getting 300km... barely half. What's wrong!?!?
I went from getting 500-600km to the tank to getting 300km... barely half. What's wrong!?!?
who knows.
bad alignment, weak tire pressures, tune up, timing is off, could be anything
24-Jan-2007, 09:13 AM
#8
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Hancook crap tires same ones I had on before, timing hasn't been changed since I was getting good mileage, I had an alignment done, I check my tire pressures every 1,000km, just changed my spark plugs I have a vacuum leak but I don't think that would kill my mileage by 200-300km...
24-Jan-2007, 09:47 AM
#10
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If you have a vacuum leak somewhere, get that checked. You are letting unwanted air entering engine when air should only entre via throttle body or a carburetor. This will distrub the balance of air/fuel mixture. Ideling could be rough (if the leak gets bigger) and car could die at idel.
Your ECU is dumping more fuel to compensate the extra unwanted air. I wouldnt' be surprised if that is the case.
Your ECU is dumping more fuel to compensate the extra unwanted air. I wouldnt' be surprised if that is the case.
24-Jan-2007, 09:50 AM
#11
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I have also been experiencing the same problem lately. My car went from 700KM/tank to roughly about 350KM/tank last week. I do know that my car is losing coolant, but I don't know if that will have such a big effect on gas economy.
24-Jan-2007, 10:04 AM
#14
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Originally posted by Nova_Dust
If you have a vacuum leak somewhere, get that checked. You are letting unwanted air entering engine when air should only entre via throttle body or a carburetor. This will distrub the balance of air/fuel mixture. Ideling could be rough (if the leak gets bigger) and car could die at idel.
Your ECU is dumping more fuel to compensate the extra unwanted air. I wouldnt' be surprised if that is the case.
If you have a vacuum leak somewhere, get that checked. You are letting unwanted air entering engine when air should only entre via throttle body or a carburetor. This will distrub the balance of air/fuel mixture. Ideling could be rough (if the leak gets bigger) and car could die at idel.
Your ECU is dumping more fuel to compensate the extra unwanted air. I wouldnt' be surprised if that is the case.
I can check for a leak using my boost gauge or is there a better way and do you know which lines are vacuum lines? so far I've checked the only one I know and its fine. Also yes sometimes I have a rough idle which is why I knew I had a vacuum leak lol it also gets me a lot of wierd looks when I'm sitting at a red light going from 1,000rpm to 2,000rpm repeatedly
24-Jan-2007, 10:12 AM
#15
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Fix that vaccuum leak....thats probably whats causing your fuel mileage problems...
My record is 700km's to a tank...right now I'm getting average 450-500km/tank....and avg 500-600 in the summer. (b16a2)
So there is deffinately something wrong. Should only be 50-100 maybe 150 kms/tank max difference from summer to winter driving....
Idle your car with the hood open and listen for a hissing sound and feel around all the small vaccuum lines and hoses to feel where it's coming from....check the pcv valve and piping, check all the vaccuum line running to the im.
hope that helps....good luck.
My record is 700km's to a tank...right now I'm getting average 450-500km/tank....and avg 500-600 in the summer. (b16a2)
So there is deffinately something wrong. Should only be 50-100 maybe 150 kms/tank max difference from summer to winter driving....
Idle your car with the hood open and listen for a hissing sound and feel around all the small vaccuum lines and hoses to feel where it's coming from....check the pcv valve and piping, check all the vaccuum line running to the im.
hope that helps....good luck.
24-Jan-2007, 10:23 AM
#16
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There is a vacuum going from intake manifold to the brake booster, also a line from PCV to the intake tube. I am not sure about other ones. But I think that's it.
Grab a thin strip of paper, place it near the tube and watch for air flow. Some people uses propane stick, I don't know much about that one.
Grab a thin strip of paper, place it near the tube and watch for air flow. Some people uses propane stick, I don't know much about that one.
24-Jan-2007, 02:03 PM
#20
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Originally posted by Nova_Dust
There is a vacuum going from intake manifold to the brake booster, also a line from PCV to the intake tube. I am not sure about other ones. But I think that's it.
.
There is a vacuum going from intake manifold to the brake booster, also a line from PCV to the intake tube. I am not sure about other ones. But I think that's it.
.
