using more fuel than normal any checks i can do?

1. Morgiee Established Member Joined: Dec 2008 Middlesbrough Posts: 2267 Past: Citroen Saxo Forte W reg posi blue Now: H

   #1 1st June 2012, 09:43

   Hi guys recently iv'e noticed im using more fuel than normal, i apprishiate fuel prices are higher now and that would contribute to how much is in the tank for your money but an example is 3 days ago i put £20 in which got me roughly 14ltr and on the dial that put me to just over half a tank. Three days on and baring in mind i only really drive to work and back which is approx 30min drive away and occationally to my town and back im down to just under a quarter. The needle also has a habit sometimes were when accelerating lightly or crusing at 30 will drag the needle down more than if crusing at 70! in fact crusing at 70 the needle gradually moved back up lol. So apart from the usual checks which im going to do is check the backbox and exhaust pipe isnt blowing check the mani connections as i put a 4-2-1 on earlier and couldnt fit the last two bolts in but whenfeeling over the gaps i cant feel no fumes escape. Pumped up the tires, had a engine service about a month back with full oil flush out and refilled with top grade oil and new fuel filter.
   
   What over things can i check for?
   
   Thanks guys
2. jones91 Established Member Joined: Jun 2011 Bridgnorth (Shropshire) Posts: 2001 Jdm Dc2 Integra

   #2 1st June 2012, 09:59

   Check the lambda sensors
3. manic Regular Poster Joined: Jan 2012 hemel Hempstead Posts: 413 l200 worrior saxo vtr stock hatch Seat leon 20v

   #3 1st June 2012, 10:07

   Check MAF sencer on the bulkhead near drivers side strut. or the rubber pipe that connects it to the manifold
   
   manic
4. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #4 1st June 2012, 10:16

   Take your top lambda sensor off if its a sooty black colour then your overfueling.
5. devilsadvocate Saxperience Post Whore Joined: Dec 2006 Maidstone Posts: 8210 Golf TDI

   #5 1st June 2012, 12:33

   You need to work out how many miles you are getting to X amount of litres to calculate the MPG. Only then can you work out if you have an issue e.g. overfueling.
6. Morgiee Established Member Joined: Dec 2008 Middlesbrough Posts: 2267 Past: Citroen Saxo Forte W reg posi blue Now: H

   #6 1st June 2012, 15:14

   Thanks guys so let it run right down on fuel then fuel up to get a better measurment. Af for lamba sensor ive just had one replaced about 4 months ago. ill still check it but but dout it is. also about 4 months ago i used a full battle of redx to clear the system.
   
   Ill do then test first once im down to empty and as soon as ive done it will post back to you.
7. jasonmayall Established Member Joined: Mar 2011 Birmingham Posts: 2148 Rover BRM, Rover 800 Coupe, Mk6 golf.

   #7 1st June 2012, 15:21

   i think the best way to measure fuel is to brim it (1click) use it for a hundred miles or so and them brim it again (also 1 click). that way you get a more accurate reading rather than guessing where the line is on the fuel guage.
8. Morgiee Established Member Joined: Dec 2008 Middlesbrough Posts: 2267 Past: Citroen Saxo Forte W reg posi blue Now: H

   #8 15th June 2012, 00:07

   ok so did test and based on £20 of fuel which was priced at £1.31 per ltr giving me approx 15.26ltr i got 172.6 on the spedo dials. based the test on filling from empty and got just over half a tank and the miles set back to 0 streight after refuel.
   
   So is that ok or worth looking into?
   
   Thanks
9. user_55309 Infrequent Poster Joined: Oct 2011 milton keynes Posts: 164 saxo vtr (mk 2)

   #9 15th June 2012, 03:27

   damn your car is good on juice
10. mlawlan69 Saxperience Forum Bum Joined: Sep 2010 leeds Posts: 4389 MCS R53 S/C 16v furiooo

    #10 15th June 2012, 03:29

    brilliant!!!
    
    i get 100 to £20 lmao
    
    overfuelling like a cunt tho
11. DreamEater Established Member Joined: Jun 2011 Hertfordshire Posts: 1574 '07 Saab 93 Vector Sport - '79 Citroën Dyane

    #11 15th June 2012, 03:48

    Quote:

    Originally Posted by Morgiee ok so did test and based on £20 of fuel which was priced at £1.31 per ltr giving me approx 15.26ltr i got 172.6 on the spedo dials. based the test on filling from empty and got just over half a tank and the miles set back to 0 streight after refuel. So is that ok or worth looking into? Thanks

    our real-world MPG average is 51.75, covering 172.6 miles using 3.34 gallons of fuel.
    http://www.fuel-economy.co.uk/calc.shtml
    
    Either your car is very very good on fuel or you didn't fill it up from empty...my diesel Saab does around 55mpg at 62mph on cruise control over 40 miles...
    
    I would suggest (as someone else has) filling your tank to the brim, then driving for 100 miles, then filling it again and take the amount of litres put in the second time and work out the mpg from that, then you'll get a true figure, and it would be best to do this a few times. But don't drive any differently, you'll only be lying to yourself...
12. user_55309 Infrequent Poster Joined: Oct 2011 milton keynes Posts: 164 saxo vtr (mk 2)

    #12 15th June 2012, 03:49

    no cat overfuelling and im lucky to get 70 to £20 lol
13. Gareth_R Established Member Joined: Mar 2010 Basildon, Essex Posts: 1042 Citroen AX VTS

    #13 15th June 2012, 07:34

    £15 gets me about 30-40 miles
    
    

    1 user thanked this post: Sophia_Bush
14. Sophia_Bush Saxperience Post Whore Joined: Jan 2007 Shropshire Posts: 9994 Moonstone Blue 106 GTi

    #14 15th June 2012, 07:36

    i know in the VTR full tank which was £55 @ 130.9 got me between 350-400 miles depending how much I drove into higher speeds
15. BertieG Established Member Joined: Oct 2009 exeter, devon Posts: 1224 Clio 172

    #15 15th June 2012, 08:02

    Quote:

    Originally Posted by Gareth_R £15 gets me about 30-40 miles

    join the club! cant believe he is complaining about 51mpg when i struggle to reach 30 half the time
16. AlexBp West Midlands Joined: Dec 2007 West mids Posts: 23149 Supra,civic GL

    #16 15th June 2012, 08:18

    are you enjoying the noise if your new manifold setup and accelerating harder?
    
    sounds silly but people dont realise they do it
    i didnt in my 106 till i found myself doing it in the skoda and being like awww no noise

    1 user thanked this post: user_34323
17. user_29491 Saxperience Forum Bum Joined: Dec 2008 Lancs Posts: 4124 JP4S'd R.

    #17 15th June 2012, 11:40

    Sound's like normal fuel consumption..
    
    The in tank float / gauge might of come loose, hence why it 'went up' when going 70mph.
    
    Stop watching the gauge so much
18. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

    #18 15th June 2012, 11:42

    Lol, don't worry about it man, mine is random also... The faster I go the more fuel I have looll