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drinking 7cdti fuel 1

1.7cdti drinking fuel
#1
Hi guys I have a 1.7cdti ecoflex, occasionally rough idle, got told maybe injectors but the main question is I've spent £230 and only got 1000miles out of it, is that normal for a vauxhall? Could it be the injectors ?

I do drive mixed and mpg averages goes from 40-45mpg but surely this don't add up right.

Any advice/help would be appreciated

Sent from my GM1913 using Tapatalk
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#2
It could be anything there are so many things.

I've noticed on mine it seems to drink fuel (or so the gauge says) but when I fill it up it's not taking as much to fill.
Astra-J 2.0 CDTI S/S
Retrofitted AFL, TPMS, Navi950, BT, DAB, Rear Camera, Infinity sound system, Towbar, Flexfloor & more.
I can do programming and retrofits using genuine GM MDI and Dealer software.
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#3
To and from work I can average between 40 to 47mpg, on a long distances (200+miles) i can get up to 60mpg depending what speed i do.
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