VR4 MAD
14-01-2008, 03:32 AM
Firstly, a question, where inside the fuel tank is the fuel pump pick-up, central within the tank or towards one end? The position within the tank obviously impacts on how effectively the last few litres can be accessed.
I seem to remember reading a post here by one of our esteemed UK members that he managed to fill his tank with 57 litres after running for sometime with the orange low fuel light on. That may mean he had only about 3l left in the tank. :speechles
Now I don't know how he filled up and whether he squeezed every last bit into the tank that it would take, but I use the 'automatic shut-off' feature most pumps have, as a reference to get some sort of consistency for how full the tank is each time I fill up. This is so I can more accurately gauge fuel mileage and consumption figures. Rather anal, I know but........:inquisiti
Everyone seated for a good story now.................. well here's the thing, yesterdays travells ended with me covering some 60kms approximately from the time the orange warning light first started to wink intermittently till I filled up. This distance included a quite major mountain climb to a pass and down the other side over narrow twisty mountain roads, so wasn't exactly all motorway cruising, though there was some of that too.
The horses weren't spared, so to speak either, but nor was this a twisty mountain road thrash. Towards the end the warning light was showing continuously and brightly. Ha I thought, this will be a good test to see how much was left in the tank when I get home and fill up.
But climbing the last fairly steep hill, not far from home, and with the engine under only moderate load and not revving its ring off, she suddenly and briefly hesitated and misfired a couple of times as I breasted (oh how I love that word.......sorry I digress) the top of the hill. From that point to the petrol station was about a further 10kms, either down hill or on the flat and there was no further rough running at all.
So I filled up and got exactly 53 litres in using my normal filling method mentioned above. Now this would mean that I had approximately 7l still in the tank.
Question then..............has anyone else had this sort of misfiring thing when climbing hills with the tank low and the warning light ablaze............:inquisiti
My worry is this would indicate to me that maybe those last 10l are only reliably accessible if travelling on the flat or down hill.
High engine load, up hill could be asking for ........... big trouble. Leaning out through fuel starvation can't be good, right. Big bang time maybe?
Can the ECU step in to help in these situations or not?
What say you guys.............
/toycar
I seem to remember reading a post here by one of our esteemed UK members that he managed to fill his tank with 57 litres after running for sometime with the orange low fuel light on. That may mean he had only about 3l left in the tank. :speechles
Now I don't know how he filled up and whether he squeezed every last bit into the tank that it would take, but I use the 'automatic shut-off' feature most pumps have, as a reference to get some sort of consistency for how full the tank is each time I fill up. This is so I can more accurately gauge fuel mileage and consumption figures. Rather anal, I know but........:inquisiti
Everyone seated for a good story now.................. well here's the thing, yesterdays travells ended with me covering some 60kms approximately from the time the orange warning light first started to wink intermittently till I filled up. This distance included a quite major mountain climb to a pass and down the other side over narrow twisty mountain roads, so wasn't exactly all motorway cruising, though there was some of that too.
The horses weren't spared, so to speak either, but nor was this a twisty mountain road thrash. Towards the end the warning light was showing continuously and brightly. Ha I thought, this will be a good test to see how much was left in the tank when I get home and fill up.
But climbing the last fairly steep hill, not far from home, and with the engine under only moderate load and not revving its ring off, she suddenly and briefly hesitated and misfired a couple of times as I breasted (oh how I love that word.......sorry I digress) the top of the hill. From that point to the petrol station was about a further 10kms, either down hill or on the flat and there was no further rough running at all.
So I filled up and got exactly 53 litres in using my normal filling method mentioned above. Now this would mean that I had approximately 7l still in the tank.
Question then..............has anyone else had this sort of misfiring thing when climbing hills with the tank low and the warning light ablaze............:inquisiti
My worry is this would indicate to me that maybe those last 10l are only reliably accessible if travelling on the flat or down hill.
High engine load, up hill could be asking for ........... big trouble. Leaning out through fuel starvation can't be good, right. Big bang time maybe?
Can the ECU step in to help in these situations or not?
What say you guys.............
/toycar