xyoung:
Just wondering why this is happening.

though 2 months ago, i noticed after buying fuel from a particular filling station close to my house, it doesnt last. i stopped buying from them. i also realized whenever my brake pad is getting to iron-iron stage, my fuel finish faster and thirdly my O2 sensor also played a part in running my tank empty.

But i just changed brake pad and O2 sensor 3 weeks ago. Why is it still running dry so fast?

kollysnut:
Oga, drop details of ur car,
No name, no model, no year.... u won't get reply from guru help. Help us will help u.

xyoung:

ok so sorry i forgot to mention details of my car
it is toyota camry 2005 aka Big daddy

kollysnut:


Engine capacity pls.....r u driving a V6 or 4 cylinder.

nurey:
so if my fuel finish compared to before, its time to start diagnosis and try to pinpoint what the issue is

-my first point of call would be to confirm the fuel tank isn't leaking
-Then i move next to the real calculation, if my calculation is more than +2L to manufacturer quoted stats, then i am not satisfied i move next to another diagnosis
- I confirm i am running the recommended tyre and pressure, using the right oil weight and not heavy on the foot. if all these checks out and still no improvement, then i go deeper
- First deeper steps is to run a scan if no codes then
- Service maintenance have i changed the spark plug, is it the recommended one? Has the air filter been changed, have i cleaned the throttle body thoroughly if after all these i am not satisfied
- A high level diagnosis is involved and an updated technician, he has to check the engine condition, once an engine has ran so many miles and alot of work has been done, it loses its agility, just like we humans, the older we get, the more we cant perform some Youngy work. All these combined will pinpoint the issue.

nurey:
so if my fuel finish compared to before, its time to start diagnosis and try to pinpoint what the issue is

-my first point of call would be to confirm the fuel tank isn't leaking
-Then i move next to the real calculation, if my calculation is more than +2L to manufacturer quoted stats, then i am not satisfied i move next to another diagnosis
- I confirm i am running the recommended tyre and pressure, using the right oil weight and not heavy on the foot. if all these checks out and still no improvement, then i go deeper
- First deeper steps is to run a scan if no codes then
- Service maintenance have i changed the spark plug, is it the recommended one? Has the air filter been changed, have i cleaned the throttle body thoroughly if after all these i am not satisfied
- A high level diagnosis is involved and an updated technician, he has to check the engine condition, once an engine has ran so many miles and alot of work has been done, it loses its agility, just like we humans, the older we get, the more we cant perform some Youngy work. All these combined will pinpoint the issue.

xyoung:


the recommended tyre size online is P205/65R15 but i am using P205/70R15. What is the effect of this difference?

nurey:


i dont think that is the result of your fuel consumption, this will only affect speedometer reading the fuel effect is highly negligible. Start with the calculation first to determine what you running for every 100km, also do you have your check engine light on?

xyoung:

Yes Engine Check light sign is ON

and i am wondering how i will do this calculation. How do i get the exact fuel capacity lost in litres for every 100km covered? My gauge is the analogue pointer type, not digital

xyoung:


the recommended tyre size online is P205/65R15 but i am using P205/70R15. What is the effect of this difference?

nurey:


i dont think that is the result of your fuel consumption, this will only affect speedometer reading the fuel effect is highly negligible. Start with the calculation first to determine what you running for every 100km, also do you have your check engine light on?

NLOwner:




Bro please explain the bolded..

I would like to learn, how do car tyre size affect speedometer reading?

nurey:


here you go

http://auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/speedometer4.htm

Gracias

xyoung:


though 2 months ago, i noticed after buying fuel from a particular filling station close to my house, it doesnt last.