A few months ago I first started noticing my A3 had trouble starting sometimes. It would need to crank a few turns before firing up. Initially I thought it was a tired fuel pump, so I bought a Sytec replacement/upgrade from B5. Since fitting that, the problem sort of comes and goes.
Recently, I did an engine flush and inflated the tyres to a higher pressure (2.8 bar, which is 40-41psi). After doing this, my l/100km (metric mpg) improved from 8.3 to 7.5 on the dash. The amount of km's done at any given position of the fuel gauge was higher than it used to be, too. This was after the first 300km of a full tank of 98.
In the last 300km of that same tank of fuel, the reading on the dash went back up to 8.1. The car also felt slower, but I wasn't sure of that. The actual l/100km reading on the dash also showed higher numbers at any given speed, than it did during the first 300km.
So I concluded that all the improvements were just in my mind, even though the facts supported them. Then I filled the tank full of 98 again. And the power was back, the fuel economy was back to where it was after the engine flush.
Can this be caused by a bad FPR? or a poorly installed pump? I did do that job myself after all...
Recently, I did an engine flush and inflated the tyres to a higher pressure (2.8 bar, which is 40-41psi). After doing this, my l/100km (metric mpg) improved from 8.3 to 7.5 on the dash. The amount of km's done at any given position of the fuel gauge was higher than it used to be, too. This was after the first 300km of a full tank of 98.
In the last 300km of that same tank of fuel, the reading on the dash went back up to 8.1. The car also felt slower, but I wasn't sure of that. The actual l/100km reading on the dash also showed higher numbers at any given speed, than it did during the first 300km.
So I concluded that all the improvements were just in my mind, even though the facts supported them. Then I filled the tank full of 98 again. And the power was back, the fuel economy was back to where it was after the engine flush.
Can this be caused by a bad FPR? or a poorly installed pump? I did do that job myself after all...