low fuel = low power

[psychy]

rightio,

had the 1.2 for couple of years now, just thought ill ask this:

"does your car have less power when the petrol tank aint full?? (i.e. 1/2 or 1/4 full)."

Mine doesnt feel as fast as it is when full.......this normal?? (albeit it aint fast to begin with)

 

[Clio_romford]

always found my car fasta wen low petrol... due to weight i think

 

[Chad]

should be the other way round mate

my old 956cc R5 was loads slower with a full tank because of the extra weight.

 

[Clio_MTV]

A full tank of petrol must weigh a fair bit.

 

[Daz]

Funny, I know its mad.. but my 1.2 always seemed to be more economical with a full tank..

Maybe the guage moved differently at the top.. like, half a tank at the top of the guage is more than half a tank at the bottom..

 

[Mondial172]

Might be down to full pressure in some cars. My Escort always went better with a full tank

 

[psychy]

so, i guess this is normal then right??

although it dont sound it..........

 

[McBunny]

there was something on briskoda about this and it was down to crap fuel pumps iirc

 

[black kro]

Should be quicker when nearly empty (weight) - running below empty on fumes will pick up sh*t in the tank and could make it a run bit worse.

WEIGHT - 1 Litre approx 1 kilo, so 50kg is about 5% of kerb weight on a new one, about 7% on a 950cc Reno 5!!

usually pessimisitic guages - if I fill up on first flash of Orange Light I only get 42 litres in - it will hold 50 but have only ran to 48 ish (750 miles on dCi)

if you fill it to the brim, it will read overful to guage (full approx 2 litres less than capacity) so will read full for prolly 50 miles hence appears to go down quicker when half or quarter full.

also fuel sloshing around near empty makes guages less accurate

 

[Lunner]

The feul tank is an odd shape, so the guage moves slower at the top, and quicker at the bottem.

My car always seems to take a while to start with a nearly empty tank, guess its due to lack of pressure

 

[Liam_Dynamique]

ive noticed the same thing psychy, and ive always put it down to it lowering the fuel pressure, and as someone has said, showing up a crap fuel pump.

 

[psychy]

so, i guess its normal then.

anything i can do to rectify it??