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flexfuel

 
fredwarner5
New User
Posts: 1
Joined: 12/12
Posted: 12/10/12 02:55 PM

My friend put about 15 gal of flexfuel in my 2006 Duramax, thinking it was B20 diesel.  It was run about 1 mile before clouds of white smoke poured out.  I drained it as best I could without dropping tank, refilled with diesel.  It sputtered for about 10 miles and then seems OK.  Did it seriously hurt the engine?  

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Richies Truck and Auto
Enthusiast
Posts: 362
Joined: 05/08
Posted: 12/12/12 08:39 AM

Theoretically, yes it could have damaged the hi pressure related components such as the cp3 and ofcourse the injectors. Only time will tell the severity of the damage. Depending how diluted the e85 was with the diesel already in the tank. The ethanol will burn hotter and faster than diesel if it was of high concentration. If that is the case than its possible to have sustained piston or valve damage. But in most accidental gasoline cases I have repaired, so long as mileage was low, u should b ok.  
Rich
05 GMC 3500HD CC/LB LLY
Fully built!
06 GMC 2500HD CC/SB LBZ:
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5toMidnight
User
Posts: 167
Joined: 03/12
Posted: 12/13/12 10:02 PM

Yes, you damaged the injection system. Expect a very large repair bill soon.  

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allenmarton
New User
Posts: 2
Joined: 01/13
Posted: 01/29/13 12:40 AM

nice posts,thanks for the info...  
allen

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