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Poor Mpg On 1.4 Spi


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5 replies to this topic

#1
ishan

ishan
  • Drivers
  • 35 posts
Joined: 24 Feb 2004
  • Location:Redhill, Surrey
For a while now my 60k 1993 205 GTX 1.4 has been suffering with really poor fuel economy. I'm getting roughly just about 100 miles to 20 of 1/litre 95 ron, which is just about the same as my Civic VTI and my mates 306 GTI-6!!

I've done a service on it (oil+filter, plugs, leads, air+fuel filter) and i've given the throttle body a good squirt with carb cleaner, which hasn't really changed anything.

It idles bang on 1k, doesnt have any flat spots in the rev range and drives as normal albeit drinking like a V6!!

What should I be looking for/replacing to sure my problem. I am looking to get 40-50mpg like my old 120k 1.4 309 did.

Any help appricated!!

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#2
bren_1.3

bren_1.3
  • Drivers
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Joined: 19 Apr 2004
  • Location:Blackpool @ home. Manchester @ uni
how are the plugs looking? overfuelling? does it run a lambda sensor at all?

what are exhaust emmissions looking like?

#3
swordfish210

swordfish210
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Joined: 02 Jan 2007
  • Name:Mark
  • Location:Bath
The lambda sensor may have had it. Or maybe the ECU is stuck in it's "open loop" setting. That'd certanly bugger the fuel consumption up

Edited by swordfish210, 06 November 2008 - 08:48 PM.


#4
ishan

ishan
  • Drivers
  • 35 posts
Joined: 24 Feb 2004
  • Location:Redhill, Surrey

how are the plugs looking? overfuelling? does it run a lambda sensor at all?

what are exhaust emmissions looking like?


It does have a Lambda sensor, and it passed MOT about 3 weeks ago with no problems, although I have misplaced the emmisions printout.
The plugs were just sooty when i replaced them.

#5
Toddy

Toddy
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  • 468 posts
Joined: 08 Jan 2004
  • Location:Peak District
Check the valve clearances

#6
BERTMAN

BERTMAN
  • Drivers+
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Joined: 05 May 2006
  • Name:Liam
  • Location:Sandbach, Cheshire
Garage View Garage
nothing todo with the problems, but them wheels look awesome on your car... think ill be gettin some!!

Edited by BERTMAN, 10 November 2008 - 02:45 PM.