E85 fuel

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Doug - 01 Mar 2005 02:20 GMT

Well doesn't seem anybody knows much about using E85 fuel in a 99 Chevy
Silverado. E85 is 15% gas and 85% alcohol. I understand the principles of
operation. What I don't understand is why it wouldn't be good to use it in
my truck. Somebody please give me a mechanics reason why I can't do this and
what modifications I would have to perform to make this work.
Thanks

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Steve W. - 01 Mar 2005 02:54 GMT

Well the easy reason is, it would be illegal. That engine, computer, and
emissions system is NOT designed to run on it. It would be the same as
running real leaded gas in an unleaded fuel vehicle. As it sits it won't
even run on E85. To make it run on E 85 means you need the E85 computer,
injectors at least. Good luck with that. Oh and you probably will want
to replace ALL the steel fuel lines with stainless. Might end up
replacing the tank as well if it has any rust in it.

You do know that you will lose almost half the fuel mileage as well?

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Steve Williams

> Well doesn't seem anybody knows much about using E85 fuel in a 99 Chevy
> Silverado. E85 is 15% gas and 85% alcohol. I understand the principles of
> operation. What I don't understand is why it wouldn't be good to use it in
> my truck. Somebody please give me a mechanics reason why I can't do this and
> what modifications I would have to perform to make this work.
> Thanks

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Mad Dog - 01 Mar 2005 04:16 GMT

alcohol has less BTU's than gasoline and would require major
rejetting/calibration of the fuel metering system to run correctly.
A fuel mixture combined of 15% gas/85% alcohol would destroy every component
it touches that is made out of rubber.
Motors that run on alcohol (racing engines) are designed from the ground up
to do so........nuff said
Still wanna run E85...?

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Mad-Dog
'79 Chevy K-10
Slightly modified
pictures can be found here:
http://mad-dog16.tripod.com/
--

> Well doesn't seem anybody knows much about using E85 fuel in a 99 Chevy
> Silverado. E85 is 15% gas and 85% alcohol. I understand the principles of
[quoted text clipped - 3 lines]
> what modifications I would have to perform to make this work.
> Thanks

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