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Thread: Gasoline in my 6.6 Duramax

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  1. 05-20-2020, 22:26 #1
    Dgause
    Dgause is offline Newbie
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    Angry Gas in my 6.6 duramax

    So I need allite help here.
    So my fuel light came on with range of 64 miles. Stopped and BP talking to my wife, grabbed the green handle and started filling my truck up. My truck was still on, I ended up putting 24 gallons of gas in my truck that's when I noticed it wasn't diesel. I shut off my truck after about 2-3 minutes of idling and got towed to the dealership.
    Im curious if anyone knows how much fuel is burned at idle, should I be worried the engine is damaged? The truck was running just fine before I shut it off. Any help would be appreciated.
    Thanks Dustin
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  2. 05-21-2020, 10:42 #2
    Yukon6.2
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    Drain the tank and filter replace with fresh diesel and some 2 cycle oil.
    Start the truck and use it the way you have in the past.
    Gasoline will not damage the engine,if the gas concentration gets to high the engine will stop running because it wasn't designed to run on gas.
    About the only damage that could happen would be to the pumps and injectors from the gas being very dry.But for the short amount of time the gas would have been in the system,don't worry about it.
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews
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  3. 05-21-2020, 11:15 #3
    DmaxMaverick's Avatar
    DmaxMaverick
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    Quote Originally Posted by Dgause View Post
    So I need allite help here.
    So my fuel light came on with range of 64 miles. Stopped and BP talking to my wife, grabbed the green handle and started filling my truck up. My truck was still on, I ended up putting 24 gallons of gas in my truck that's when I noticed it wasn't diesel. I shut off my truck after about 2-3 minutes of idling and got towed to the dealership.
    Im curious if anyone knows how much fuel is burned at idle, should I be worried the engine is damaged? The truck was running just fine before I shut it off. Any help would be appreciated.
    Thanks Dustin
    Welcome aboard!

    It doesn't sound like anything to worry about. Let the dealer flush the system and run the diagnostics. They have a procedure for just that. If you didn't hear/see/smell anything remarkable or catastrophic, it likely wasn't an issue. While the fuel system does cycle a lot more fuel than it burns, it isn't really much at idle. It's entirely possible the gas never made it to the pump, or not enough to cause a problem. The key is getting it flushed out and replaced with some fresh #2.

    Also, if you have comprehensive insurance coverage, it will almost always cover the expense.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
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