New answers tagged fuel-consumption
In this particular case replacing the EVAP check-valve didn't make a measurable difference to fuel economy. It seems that the amount of fuel vapour involved is very small and only really of interest from an emissions point of view. Unfortunately, I never to got the crude estimate that I was originally after. The real reason for the horrible fuel consumption ...
The answer is complicated. Lets say we have two conditions - low revs and high injector times, and twice the revs and half the injector times. In both cases the fuel burned will be the same. This is normal - we need work done and this comes from the fuel. We have to account something else - when engine turns there is friction - the more revolutions will ...
Lets say your car is upto date with its servicing, and maintenance too. Your car is now older and more worn then it was when you first got it. It can only be less efficient in itself. Now you can either spend money on changing all manner of bits and pieces on your car or spend your money on a new fuel efficient car.
If you have an air leak on the EVAP system then the MAP sensor will not be able to determine the air density, and the MAF sensor will not be able to determine the volume of air, entering the engine correctly. This will lead to an over fuelling situation AND an under fuelling situation depending on the size of the air leak and engine operating speeds and ...
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