Idle fuel burn? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 11 (permalink) Old 01-24-2011, 11:25 PM Thread Starter
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Idle fuel burn?

I'm wondering what burns more fuel while idleing?... stock setting or at a modified tune (DP Tuner 80hp, Economy) Thanks
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post #2 of 11 (permalink) Old 01-25-2011, 01:31 AM
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Re: Idle fuel burn?

im curious also,
like a gph at idle

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post #3 of 11 (permalink) Old 01-25-2011, 01:37 AM Thread Starter
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Re: Idle fuel burn?

would be nice to click it to stock while running in a store or something to save some fuel if its less....
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post #4 of 11 (permalink) Old 01-25-2011, 01:55 PM
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Re: Idle fuel burn?

I don't think a tune would make any difference on the amount of fuel used. It's only turning over the engine...It's not going faster. There's only a certain amount of fuel being used to accomplish the work of maintaining a certain amount of RPM's with the amount of load from the alternator, etc.

I wanna say that it's around a third of a gallon per hour though to maintain idle.

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post #5 of 11 (permalink) Old 01-25-2011, 02:47 PM Thread Starter
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Re: Idle fuel burn?

On my gas truck I had with it all tuned up just idleing i swear u could almost watch the gauge move... it was a GMC 6.0, got 7mpg, once I tuned it differently it was alot better.. thats what got me thinking about it.. I guess I just dont fully understand what the tuner changes in the 7.3 to produce more hp... but i was thinking more hp= more fuel getting sprayed but I dont know...either way doesnt really matter cuz its so hard to keep the foot off the pedel while driving..
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post #6 of 11 (permalink) Old 01-25-2011, 07:15 PM
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Re: Idle fuel burn?

When the engine is cold the idle gph is way up over 1. Hot idle is usually around .38 for me, in park of course.

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post #7 of 11 (permalink) Old 01-26-2011, 03:06 AM
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Re: Idle fuel burn?

i know it will drink some dam fuel at idle, well mine dam sure seems to
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post #8 of 11 (permalink) Old 01-27-2011, 01:29 AM Thread Starter
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Re: Idle fuel burn?

I guess a guy could experiment and fill up, idle for a few hrs then refill.. anyone work at a gas station, could fill up and leave the truck at the pump so theres no accelorating..
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post #9 of 11 (permalink) Old 01-27-2011, 01:31 AM
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Re: Idle fuel burn?

Warm my truck takes about .4-.5 gallon an hour, cold (high idle) 1.3-1.6 gph.
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post #10 of 11 (permalink) Old 01-28-2011, 01:28 AM Thread Starter
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Re: Idle fuel burn?

stock or tuned?
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