Tank Capacity

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Tank Capacity

Postby giles.holland » Fri 09.03.2012, 02:14

Whats the petrol tank capacity?

And is 220 miles to a full tank without much boost normal? Or could I have a fuel leak somewhere?

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Re: Tank Capacity

Postby dunnlor » Fri 09.03.2012, 03:34

Don't know the capacity, but have exceeded over 300 miles between fill-ups.

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Re: Tank Capacity

Postby Peter_W » Fri 09.03.2012, 06:15

I just re-filled with 11.4 US gallons after a 330 mile mostly freeway trip at 70 to 80mph, which is 28.9 miles per US gallon.

A US gallon = 0.8327 Imperial gallons, which would be 9.5 Imperial gallons, for 34.7 miles per Imperial gallon.

220 miles to a full tank is very low, so some thoughts: does that include a lot of stop and go driving? How is the car running? Perhaps a possible fuel gauge/light issue indicating the need for a re-fuel while there is more fuel in the tank than indicated?
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Re: Tank Capacity

Postby HJ2 » Fri 09.03.2012, 09:04

Hmmzzz... How black is your exhaust?
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Re: Tank Capacity

Postby Rambo » Fri 09.03.2012, 10:05

You don't get much of a picture on just one measurement. You need to do several tankloads to build up an idea of what's happening.

After over 8 years of mixed driving - motorways at high speed :burnout: , country roads at high speed with lots of gear changes :burnout: , and slow town traffic :( I average 29.6 mpg. That's for over 33,000 miles and 1126 galls of premium petrol

Sounds like your only getting about 22mpg but you could've been stuck in slow moving traffic or you could've been thrashing it ????
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Re: Tank Capacity

Postby Rambo » Fri 09.03.2012, 10:07

Forgot to say...............

For petrol tank capacity check the back of the handbook.
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Re: Tank Capacity

Postby rip » Fri 09.03.2012, 15:05

10.2 UK gallons IIRC.
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Re: Tank Capacity

Postby Rambo » Sat 10.03.2012, 22:16

rip wrote:10.2 UK gallons IIRC.


I think your correct Rip. That's what I was basing my 22 mpg on anyway
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Re: Tank Capacity

Postby cliff » Sat 10.03.2012, 23:25

When I bought mine, first drive was Stroud to Frankfurt. I was horrified to find that it used more fuel than my 4.7 V8 Jeep on the same run! :shock:

Found out that the throttle position sensor wiring was damaged and fuel was being poured into the car by the ECU. Had a similar problem on the Jeep when the O2 sensor failed, ECU saw shown a lean mixture so it pours fuel in to compensate.

Run Elanscan to be sure everything is OK.

Don't forget new car/new mod syndrome though, driving around in a new car or after a performance mod, there is a basic need to use it - hard. I couldn't help myself in the Elan after the piper was fitted. Just been to Berlin & back in the Alfa GT diesel, 1200 km with pretty poor mpg - 200kph + cruising will do that though! :lol:
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Re: Tank Capacity

Postby racerstev » Sun 11.03.2012, 02:19

Does you car have a O2 sensor? I hear it makes a big differance in MPG. Mine is in the
30mpg range most of the time. Makes my buddy with the Jenson Intercepter crazy and I can
still outrun him! LOL

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Re: Tank Capacity

Postby giles.holland » Mon 12.03.2012, 00:20

I can smell the exhaust is a bit richer than I'm used to in other cars.

Don't thrash it, although I do a lot of town driving. Did 280miles on the motorways.

Fuel gauge seems ok as the light went on, I refuelled and got 45litres in it. (which answers my own question, must have a 50litre tank)

I have no idea if it has an O2 sensor. No idea what it is or what it does.

Just put Shell V-power fuel in it so I'll see what happens now....

Exhaust is a normal light grey, but there's ALOT OF IT and even more when I boost. I'm guessing that the turbo is on its way out and so oil is passing through the turbo and burning. Could be a cause for extra fuel being burnt???? Hense exhaust smelling rich?

Only filled it up twice sence I've bought it, 280 miles coming back on motorway and 192miles town driving, short trips.

192 miles on a full tank!!!!!!????? :shock:
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Re: Tank Capacity

Postby Coupeboy » Wed 21.03.2012, 22:40

If your car is a UK SE it's unlikely the car has an O2 sensor. Check to the left of the turbo heat shield. There will either be a large bolt head (no sensor) or a sensor clearly fitted into the exhaust manifold. Without an O2 sensor the car will simply fuel to meet cold start and throttle demands. You're right that these cars can and do smell very strongly of unburnt petrol (fuel tank filler neck cracking aside). With an O2 sensor fitted (wiring loom already installed in the car!) and after the warm-up cycle of approximately 2 minutes, fuel metering will also take into account the O2 sensor feedback. Before installation I was getting around 28mpg, after the mod it will do 34mpg quite easily and on a steady motorway run @70 mph around 37mpg. The O2 sensor install will eventually pay for itself. The sensor and ECU chip required and fitting tales of woe are covered elsewhere on here and should come to £100 for both or more if you want to up the boost. Another reason for overfuelling may be a fault with the coolant temp sensor indicating cold all the time and thus the ECU overfuels believing the engine is always cold. Have you checked for fault codes?
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Re: Tank Capacity

Postby JonT » Mon 26.03.2012, 15:51

You can see my comments about searching for O2 sensors around this time last year on the Wiki here:
http://wikilec.9600.org/index.php/Oxyge ... %29_sensor
You can also see an engine bay pic here which you can just about see the O2 sensor:
http://wikilec.9600.org/index.php/Image:Boost_leak2.JPG
(white thing sticking up at about 45 degrees on the LHS (as you look at the picture) of the turbo heat shield.)
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Re: Tank Capacity

Postby epipete » Mon 26.03.2012, 16:52

JonT

Thanks for this, very useful albeit that its still difficult working out what sensor & from where :bonk:

Can you advise in regard to the ECU upgrade please?

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Re: Tank Capacity

Postby Coupeboy » Tue 27.03.2012, 13:07

Please review all the info on the O2 sensor and ECU ugrade in the appropriate areas. I was just giving some background info to improve mpg.
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Re: Tank Capacity

Postby JonT » Tue 10.04.2012, 11:31

epipete wrote:JonT

Thanks for this, very useful albeit that its still difficult working out what sensor & from where :bonk:

Can you advise in regard to the ECU upgrade please?

Part number I bought was:
0258005701
Chucking this at ebay finds:
http://www.ebay.co.uk/itm/0258005701-Bo ... 512wt_1195
I don't think it was them I bought mine from last year, but can't find the details off hand.

As for the ECU upgrade, see the Mountain Chips link at the top of the forum:
http://ealanach.co.uk/elanchips/

I've got sockets the right size for removing the O2 bung and fitting the O2 sensor if you want to borrow them (I'm in north Bristol).

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