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FerrariChat.com » Technical Q&A Archives » Archive - May thru December 2001 » I miss 20 lit or 5 gal of fuel in my Mondial t!? « Previous Next »

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'75 308 GT4 (Peter)
Posted on Monday, September 03, 2001 - 1:53 pm:   

With my tanks currently bone-dry empty, I'll be noting at which quantities of fuel correspond to the readings on the gauge as I fill it up.

The fuel-level sender float at the lowest position is still about 4-6 inches above the tank floor. According to my O.M. I have a reserve of 15L and my tanks are 75L in total.

So when I fill up +15L of fuel, that's when the low-level light should go out... In a perfect world... We'll see....
Steve Magnusson (91tr)
Posted on Monday, September 03, 2001 - 12:54 pm:   

Krister -- I think you're onto a very reasonable explanation (someone confusing �20 + 5� for the actual �20 total of which 5 is considered the reserve�). Can some confirm what's listed in the OM as the fuel tank spec for a Mondial QV or 2-valve for comparison?
Krister Ripstrand (Krister)
Posted on Monday, September 03, 2001 - 7:29 am:   

Steve - I should have mentioned that it seems to allow just ~76 liters after emptying it. This is why I wonder if there is some kind of reserve tank? It seems the specification is obsolete. The documentation people who wrote the instruction manual probably missinterpreted the 20 liters, 5 gallon reserve.
Aren't there any Mondial owners who wondered about the capacity spec?
Steve Magnusson (91tr)
Posted on Sunday, September 02, 2001 - 3:32 pm:   

Krister -- I'd tend to doubt the capacity specification first as my TR only has a 100 liter tank for the larger V12 (and I know the early V8s are about 70 liter -- but I have no idea about your Mondial t). When you fill up after running out how much goes back in?
HEATH VAUGHN (Heath)
Posted on Saturday, September 01, 2001 - 10:04 pm:   

WHO EVER SAID ITALIANS COULD MAKE A PROPER GAS GUAGE? MINE NEVER READS THE SAME TWICE. PARK ON A SLIGHT GRADE THE LOW FUEL LIGHT COMES ON ROLL IT TO LEVEL GROUNG IT READS 3/4 FULL. WITH TWO GAS TANKS AND ONE SENDING UNIT ITS ALL IN HOW YOU PARK OR ARE YOU MAKING MORE LEFT TURNS OR RIGHTS?
Krister Ripstrand (Krister)
Posted on Wednesday, August 29, 2001 - 2:10 am:   

Hi all, especially Mondial t owners

Several discussions have concluded that the fuel gauges in Ferraris are of a not to good construction ok? So we all drive by our odometers in order to find the time when to refuel.

To the problem: In my instruction manual it says that the capacity of the fuel tank is 96 lit or 25 gal and a 20 lit, 5 gal reserve hmm. I kind of assume that the reserve is included in the full capacity. My average fuel consumption is 1,3 lit/10 km (0,34 gal/10 km), which seems fair. For the second time i have come to the crude conclusion that I can not drive more than approximately 600 km before the tank is empty. 600 km X 1,3 lit/10 km = 78 lit.

To the questions:
Is there a missprint in the instruction manual?
Is there a secret switch, not found in the instruction manual, for the last 20 lit or 5 gal of fuel?
Somehow my missing 20 lit, 5 gal, coincides with the specification of the reserve quantity!

I do intend to check my odometer more thoroughly with a GPS some time.

In the mean time, any comments or suggestions?

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