SV6 fuel problem????

[BUSTER1]

My 2005 sv 6 is useing lot of fuel but it also seems to have more power could it be the oxygen sensors is there any way to test them ,the car has done 85000km and I have not changed the spark plugs but I have changed the fuel and air filters ,thank for any suggestions,
Cheers Garry

 

[wassaby]

i have same prob, replaced the two front o2 sensors, air filter, fuel filter, spark plugs, cleaned maf sensor and still using too much fuel, run some injector cleaner through the tank and same thing, now i am getting black soot on the exuast tip, so i think im going to have to take it to a shop

 

[1FATVZ]

just out of curiosity, whats your L/100KM?

 

[wassaby]

mines 16l/100k

 

[BUSTER1]

I'm getting 16l to17l/100k as well

 

[devil_87]

i am also getting 19l/100k ..recently done fuel injection cleaning and replaced the air filter. i use 95 octane . please advise . i use the a.c all the time. i have auto transmission cheverolet lumina 2005

 

[doms1]

Try resetting your distance to empty trip meter see if the kms per litre improves?

 

[wassaby]

how do u do this

 

[devil_87]

hey..i actually reset it wenever i refuel my car !! is it the spark plugs ??

 

[Hotblack]

I have an Sv6 with about 143K on the clock and get around 12-13lt/100k, in city driving and when i do a trip at Highway sppeds of 100k get between 8.5-9.5/100km so i would say u may have a prob somewhere, maybe a blocked injector or two, have them removed and cleaned or replace the...Mick