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+--- Thread: fuel tap, wasted fuel? (/showthread.php?tid=72695)
fuel tap, wasted fuel? - Paulfzs - 29-05-15
anyone else had their tap off?
reserve port blocked (obviously the tap is unusable once on the bike)
the main hose has the little filter with about 3/4 of an inch blocked off at the bottom so in theory you end up having a lot of fuel sat at the bottom of your tank so run out sooner than you normally would.
also note the funky looking face
![[Image: LvCW4hd.jpg]](http://i.imgur.com/LvCW4hd.jpg)
Re: fuel tap, wasted fuel? - Fazerider - 29-05-15
I trimmed the bottom of the plastic filter off to gain a bit more tank range, though how much it improved things is hard to say as I didn't do any measuring.
Re: fuel tap, wasted fuel? - Paulfzs - 29-05-15
yeah i did to mine aswell, seems like such a waste considering there is no reserve
Re: fuel tap, wasted fuel? - anutz - 29-05-15
they could of at least given him a happy face......not the shocked expression he has......
Re: fuel tap, wasted fuel? - fazersharp - 29-05-15
So that explains that when I am limping around with the fuel light on and then finally go to fill up there looks the be loads in there and I need not of been so "limp wristed" after all. So if you do find yourself out on petrol it could be worth trying the slosh whats inthere over and outdown the pipe
Re: fuel tap, wasted fuel? - anutz - 29-05-15
how far can you get with what is just in full float boals.....i.e. if you forget to turn the fuel tap open again?
Re: fuel tap, wasted fuel? - limax2 - 29-05-15
With the tank stationary it takes 1.5 litres before fuel gets to the filter part of that stand up. You wont get all that by doing away with the stand pipe because there is about 0.2 litres in the depressions below the fuel tap fitting face level. Probably gain a bit over 1 litre in practice along with any water that might be in there from condensation etc. Any bits of rust ect should get caught with the in-line fuel filter and IMHO any water is probably better being burned off than staying in the tank.
(29-05-15, 10:00 PM)anutz link Wrote:how far can you get with what is just in full float boals.....i.e. if you forget to turn the fuel tap open again?Embarrassingly I can give a partial answer to this. After recently topping up with 11 litres of diesel I got about 1.5 miles before I felt a slight hesitation from the engine, quickly followed by big loss of power and clouds of smoke from the exhaust. Fortunately I was able to coast to another garage and sort it out with no ill effects. I didn't think I had done such a stupid thing until I checked my receipt. :o .
I would think with the tap turned off you might get nearly a mile. I'm sure there are a few on here who have done it.
Re: fuel tap, wasted fuel? - anutz - 29-05-15
ah ok, well i filled my laguna up with 5£ of petrol last week, got home ok and i read around the interwebs and it said with such as small ammount it is ok - not sure but we shall see as its now been fully topped up with diesel again :lol
Re: fuel tap, wasted fuel? - Paulfzs - 29-05-15
took mine down quite a bit so i will get a few more miles to the tank! i too wondered why i had a fuel light yelling at me, i drained 4 litres out earlier and i still had a bit left and the fuel light was on... seems a bit early to be warning me i need fuel in the next 50 miles!
Re: fuel tap, wasted fuel? - limax2 - 29-05-15
(29-05-15, 11:06 PM)anutz link Wrote:ah ok, well i filled my laguna up with 5£ of petrol last week, got home ok and i read around the interwebs and it said with such as small ammount it is ok - not sure but we shall see as its now been fully topped up with diesel again :lol
With older diesels a mixture up to a third of petrol was considered what you could get away with without doing damage. Common rail diesels and later are more particular, probably due to tighter clearances. You don't get much petrol for £5 so unless you were running on dregs I guess you'll be o.k.
I was actually relieved when I finally realised I had topped up with diesel as I was thinking holed piston etc.
Re: fuel tap, wasted fuel? - fazersharp - 29-05-15
It reminds me of an old c50 we used to ride in the fields back in 1980 -ish the only way to get the thing to go was to take the spark plug out and fill the head up with petrol and bump it and it would go a surprising long way before it conked out, I dont know if it kick started the system a bit or that is how far you got on a head of petrol, strange that you would think it would be flooded --- but it worked
Re: fuel tap, wasted fuel? - unfazed - 30-05-15
(29-05-15, 11:08 PM)Paulfzs link Wrote:took mine down quite a bit so i will get a few more miles to the tank! i too wondered why i had a fuel light yelling at me, i drained 4 litres out earlier and i still had a bit left and the fuel light was on... seems a bit early to be warning me i need fuel in the next 50 miles!
Not if you are touring in France off the motorways after 7pm :rolleyes
Re: fuel tap, wasted fuel? - His Dudeness - 31-05-15
(30-05-15, 10:44 PM)unfazed link Wrote:[quote author=Paulfzs link=topic=17126.msg197475#msg197475 date=1432937281]
took mine down quite a bit so i will get a few more miles to the tank! i too wondered why i had a fuel light yelling at me, i drained 4 litres out earlier and i still had a bit left and the fuel light was on... seems a bit early to be warning me i need fuel in the next 50 miles!
Not if you are touring in France off the motorways after 7pm :rolleyes
[/quote]
ah well pushing it keeps you fit and young :lol Do you really want to be using that last inch of fuel? Well maybe if you're touring in France off the motorway after 7pm and you run out :lol but other than that surely any crap that's settled in the tank will be down there and you'll be dragging it through the carbs or if there's a bit of water in the tank that'll be settled at the bottom.
Re: fuel tap, wasted fuel? - Paulfzs - 31-05-15
most of the junk will sit in the hole for the reserve and the rest wont get through because of the filter built in
Re: fuel tap, wasted fuel? - Fazerider - 31-05-15
What with a dead low fuel warning lamp that I've not got round to replacing and being in a bit of a rush, I forgot to check there was sufficient fuel for my journey this morning and the inevitable happened. While making "good progress" down the A331 the bike coughed, I realised my mistake and slowed to a more fuel efficient 45mph for a couple more miles until the bike spluttered to a halt on the off-ramp to Aldershot.
Turn ignition off and on again and shake the bike left and right and back and forth to try and slop some fuel over the intake before the pump gets bored and switches itself off. Repeat three times.
Restart and the bike gets me another half mile leaving just a 200m push to a petrol station. Which was more luck than I deserved. :o
Thanks to the lowered filter on the fuel tap and the extra hole in the filler neck to allow filling to a higher level than Yamaha originally intended, I can report a full-to-empty tank range of 269 miles and a fuel-up of some 20.5 litres… not bad for an 18 litre tank. :lol
Re: fuel tap, wasted fuel? - Paulfzs - 01-06-15
thats not bad at all!
little mods make a big difference
Re: fuel tap, wasted fuel? - paulchucky - 01-06-15
With the tank stationary it takes 1.5 litres before fuel gets to the filter part of that stand up. You wont get all that by doing away with the stand pipe because there is about 0.2 litres in the depressions below the fuel tap fitting face level. Probably gain a bit over 1 litre in practice along with any water that might be in there from condensation etc. Any bits of rust ect should get caught with the in-line fuel filter and IMHO any water is probably better being burned off than staying in the tank. [/size]
so how do we burn the water off ????
do we fill to brim so water is floating at top and then put a lighted match to it :lol :lol :lol