Has this happened to you before?

1. ChrisBR Newbie Joined: May 2010 Posts: 16

   #1 18th June 2010, 12:53

   Whenever im below half a tank of petrol the car has trouble starting... I was told fuel pump is lacking power but i had that changed last year second hand part... Is it deffinately the fuel pump or can something else be causing the lack of power?
   
   Thanks
2. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

   #2 18th June 2010, 13:01

   When you remove the fuel filler cap do you get a 'sucking' sound...?
   
   If so there's a problem with the fuel tank breather valve thingy. What's happening is as the fuel is going down you're creating a vacuum inside which counters the pressure applied through the fuel pump, causing engine running problems.
3. ChrisBR Newbie Joined: May 2010 Posts: 16

   #3 18th June 2010, 14:19

   I'll have a look mate - ive just changed my fuel filter didnt notice anything
4. user_25897 Saxperience Forum Bum Joined: Jul 2008 preston lancashire Posts: 3210 1999 mango west coast!!!!!!!!!!!!!!

   #4 18th June 2010, 17:49

   i have this same sort of problem but my car runs really sluggy (no power) when i have more than quarter of a tank of petrol....
   
   anything under quarter of tank and it runs like a dream
   
   if u find an answer to this can you let me know
5. dankzy Established Member Joined: May 2009 Middlesbrough Posts: 1143 citroen saxo 1.1 forte orange mango :)

   #5 18th June 2010, 17:52

   could be the fuel pump packing in, i would have bought one new then you would no if it was that or not
6. ChrisBR Newbie Joined: May 2010 Posts: 16

   #6 24th June 2010, 13:17

   Hey - thanks for the input... I had a listen to see if I could hear a sucking noise and can't hear anything...
   
   This is really confusing me as last year a replaced it (I know it was a second hand part) but is there anything else that could be causing the problem or do you think I should just replace with a new fuel pump?
   
   Thanks