911uk

Car over fuelling on idle?

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YOUR RESEARCHCar over fuelling on idle?

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Run i will get around 27 mpg

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Suggestion · Original poster
Well on a decent run i will get around 27 mpg which seems fairly realistic, but around town its much closer to 12 mpg which I think is a little shocking.
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Car over fuelling on idle?

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Leading evidence: 'Run i will get around 27 mpg' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run i will get around 27 mpg' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Run i will get around 27 mpg

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion · Original poster
Well on a decent run i will get around 27 mpg which seems fairly realistic, but around town its much closer to 12 mpg which I think is a little shocking.
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Car over fuelling on idle?

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8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

911uk: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

Right guys I have now had my 1998 996 C2 for just over a month and am completely over the moon with it and now have many jealous mates. How ever it's drinking fuel at an alarming rate around town and when the car is just on idle there is a really strong smell of fuel coming from the exhausts. So I'm assuming it is over fuelling, the question is why or what could be causing it? Any thoughts or suggestions would be great. Andy

POST 2Original post

What do you get 20mpg or worse. My Commute (15 miles country roads average speed about 35mph) to work I see 22mpg. Long motorway drive cruise set at 75 - 28mpg

POST 3Original post

What sort of MPG are you getting? Does it improve when on a proper run? First step, get it along to a garage and have the emmissions analysed, maybe the MAF sensor is giving the engine the wrong reading, hence the mixture's wrong. Either way, get it looked at quick as unburned fuel in the exhaust will knacker the catalysts.

POST 4 / ORIGINAL POSTEROriginal post

Well on a decent run i will get around 27 mpg which seems fairly realistic, but around town its much closer to 12 mpg which I think is a little shocking. My old man has an emmisions tester knocking around his garage some where, does anybody have a clue what sort of levels they should be at? Cheers Andy

POST 5Original post

12mpg is v. bad, that's not right at all. if you drive it normally around town and keep it below 4000rpm,you'll get about 20-21mpg worse case.

POST 6Original post

Could this be a MAF fault? Any problems accelerating?

POST 7Original post

Maybe the variocam activator? I'm surprised theres no Check Engine light showing. Get it checked out by a tech.

POST 8Original post

I commute every day, 50% of it through NW london, in my 996 and I average 26mpg

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