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Feul Light

gts4

By gts4,
in General Maintenance

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JimX Grand Master

JimX

Posted
Posted

Of all the globes that would burn out in the dash, I would think the fuel light would be least likely :) On the R33 it only comes on when your fuel is just about on the empty line, which usually means you have about 10-15 litres left

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HER-R33 Contributor

HER-R33

Posted
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JimX is right. Except i thought they came on when you have even less petrol than that left - like less than 15 kms to go.

My advice (and my mechanics) don't wait for it to come on - by the time it does you've already sucked all the shit from the bottom of your tank into the engine. Not Good!

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JimX Grand Master

JimX

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Ah, the good old "bottom of the tank" thing again :) Here are my ideas on it:

(1) Your fuel pickup is already at the bottom of the tank. It doesn't float on top of the fuel or anything. If there is any shit down there to be sucked up, it will be sucking it up constantly!

(2) When you fill up your tank, any "shit" that is supposedly in the bottom of the tank will be swirled around and thus mixed in with the rest of the good fuel. It may settle down eventually, but not by the time you drive away from the servo.

(3) There is a fuel sock on the pump, and on some Bosch pumps an extra screen in the pump. These filter out big particles pretty well. After the pump is a fuel filter which filters out finer particles.

(4) I had a good look down the bottom of my tank when I was changing my fuel pump, and it looked clean as a whistle! Not that I had a perfect view, but with a torch it all looked pretty good from what I could tell.

So I think this thing about not letting your fuel run low is a complete myth! If someone has proof of otherwise then please tell. I think the biggest thing is number (1) above though.

The *only* thing I would be wary of is running out of fuel completely, IF you have a cheap pump. Some of these cheap pumps require the fuel to keep them cool. Once you run out of fuel, there is no more cooling happening and they burn out completely within a couple of seconds.

But Skyline pumps are pretty good, I've not heard of one dying in this manner yet. And any good quality aftermarket pump (Bosch for example) will also be ok. Kia is the biggest offender I have heard of with pumps dying by running out of fuel, and it probably applies to a lot of other cheap small cars.

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wrxhoon Grand Master

wrxhoon

Posted
Posted

that would vary from car to car , ive done up to 50 km on the gtr and havent run out yet or surge for that matter .

jimx , if u got rubish in the tank they always float around and u r more likely to pick up if u has a very small amount of fuel in the tank cause there is les fuel in there not because they are on the bottom . u r right in saying that u have a filter in the pick up and a fuel filter in the engine bay as well so if u have rubish in the tank u r going to pick some up . most will be blocked by the strainer in the tank , some very fine will escape but the fuel filter will them pick up .

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