| Re: [GMCnet] Vapor Lock (yes, again) [message #88261] |
Sat, 12 June 2010 15:26  |
James Moore
Messages: 71
Registered: January 2004
Karma: 0
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Member |
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Jim,
My GMC has always run with no vapor lock on today's gas including gas with
methanol in it.
The 78 Blazer just ran from Portland Oregon to San Diego with no fuel
related problems using the carb that came on it from the factory.
Only confirmed problems I know of concerning current gasoline is the
methanol will damage some of the original elastomers used in carbs 30 yrs
ago. All carb overhaul kits now have elastomers that aren't damaged by
methanol. It will also pickup moisture out of the air and form compounds
that will damage fuel system metals. For that reason, I always try to fill
my tanks before storing and do not use vented fuel caps on my GMC. I use
Stabil in my home generator and lawn mowers when I store them. I am
thinking about putting it in the GMC but don't know how to insure it gets
into both tanks.
The fuel pumps on new cars are located in the fuel tanks for two reasons.
The gas in the tank cools them and they are located with baffles and in a
sump to keep them from running dry. If you want to ruin a EFI fuel pump,
operate it dry.
Jim Moore
> [Original Message]
> From: Jim Kanomata <jimkanomata@gmail.com>
> To: <gmclist@temp.gmcnet.org>
> Date: 6/12/2010 12:08:03 PM
> Subject: Re: [GMCnet] Vapor Lock (yes, again)
>
> Jim,
The fuel blend is considerably different than 30 years ago.
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| Re: [GMCnet] Vapor Lock (yes, again) [message #88275 is a reply to message #88261] |
Sat, 12 June 2010 17:57  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Blazers are higher off the ground and the tank is not shaped like ours
and the heat output and load is considerably less.
Were taking about a 35 year old tank with dirty sock filters, flat
fuel tank that s about 15" off the pavement.
Assuming everything is clean, maybe you'll get by, but most have the
dirty sock filters that restrict flow enough to where aux pump is
needed.
On Sat, Jun 12, 2010 at 1:26 PM, James Moore <j.moore.jr@mindspring.com> wrote:
> Jim,
> My GMC has always run with no vapor lock on today's gas including gas with
> methanol in it.
>
> The 78 Blazer just ran from Portland Oregon to San Diego with no fuel
> related problems using the carb that came on it from the factory.
>
> Only confirmed problems I know of concerning current gasoline is the
> methanol will damage some of the original elastomers used in carbs 30 yrs
> ago. All carb overhaul kits now have elastomers that aren't damaged by
> methanol. It will also pickup moisture out of the air and form compounds
> that will damage fuel system metals. For that reason, I always try to fill
> my tanks before storing and do not use vented fuel caps on my GMC. I use
> Stabil in my home generator and lawn mowers when I store them. I am
> thinking about putting it in the GMC but don't know how to insure it gets
> into both tanks.
>
> The fuel pumps on new cars are located in the fuel tanks for two reasons.
> The gas in the tank cools them and they are located with baffles and in a
> sump to keep them from running dry. If you want to ruin a EFI fuel pump,
> operate it dry.
>
> Jim Moore
>
>
>> [Original Message]
>> From: Jim Kanomata <jimkanomata@gmail.com>
>> To: <gmclist@temp.gmcnet.org>
>> Date: 6/12/2010 12:08:03 PM
>> Subject: Re: [GMCnet] Vapor Lock (yes, again)
>>
>> Jim,
> The fuel blend is considerably different than 30 years ago.
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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