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Leaking Fuel?

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Old Aug 23, 2013 | 09:18 PM
  #21  
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Originally Posted by slvr bulit
If you had a leak you would smell it. If your that worried about mpg you should trade it in for a prius.
Ha! I really don't worry about the mileage, I just don't like the idea of pouring gas on the ground. Both from a monetary and environmental standpoint.

Plus, I figure better safe than sorry. A gas leak can lead to a thing...what's it called...um....fire! Yeah, that's it!

Last edited by bcperry; Aug 23, 2013 at 09:20 PM.
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Old Aug 23, 2013 | 09:19 PM
  #22  
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Originally Posted by Marine One
I also think that if you had a leak of this magnitude you would definitely smell it.
I'm thinking you've got the fuel sending unit sulfur issue. Try some Techron and see what happens.
I ran two bottles of Techron through the last tank, and nothing. Would the fuel sending unit cause the DIC to read really high?
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Old Aug 23, 2013 | 10:46 PM
  #23  
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Originally Posted by bcperry
Would the fuel sending unit cause the DIC to read really high?
Not if I believe the FSM: the 'Average MPG' readout is calculated from the amount of gas actually used by the engine, not the amount of gas left in the tank. Otherwise, the readout would spike to some insane value after a fill-up if you didn't reset it.

But a bad sending unit would affect the 'Range' calculation.

Last edited by Lee DeRaud; Aug 23, 2013 at 10:48 PM.
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Old Aug 24, 2013 | 09:39 AM
  #24  
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Originally Posted by 8VETTE7
Were these the large (20 Oz) bottles or the small ones????
They were the small ones.

Originally Posted by 8VETTE7
It also make a difference how you add the Techron. Less than half full tank, add a large bottle and fill the tanks works well.
I didn't know that, but it does make sense. I'll try that this time.
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Old Aug 24, 2013 | 09:45 AM
  #25  
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Originally Posted by Lee DeRaud
Not if I believe the FSM: the 'Average MPG' readout is calculated from the amount of gas actually used by the engine...
Exactly. This is why I am suspicious of a leak. The DIC is accurate over short trips, but on a whole tank, it gets WAY off. Six mpg or more off. if it was that the DIC was calculating incorrectly, it should be off no matter how much I drive on the tank of gas.

Like i've said before, I don't care if the DIC is off (It's a Vette, I'd be very pleased with 20 mpg), I just don't want to be pouring gas on the ground if I can help it at all.
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