Old Gas in Fuel Line

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USMC_Spike
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Old Gas in Fuel Line

Post by USMC_Spike » Sun Aug 26, 2012 8:23 pm

Question,

What do you do with old gas in the fuel line?

My mechanic friend says to just blow it out with
the air compressor. Car sat with plugged lines since 1992.

We did, blew it out, attached the fuel filter and a new
carb, got the motor running.

Problem with the carb and idle problems got me to pull the
cab for return to mfg but I found some goop on the butterfly
along where the screws attach to it.

I'm thinking since I installed another carb and replace the fuel filter
that there is still some crap in the fuel line.

I really want to blow through the fuel line with ether/starting
fluid to clean it out, but Mechanic says it will be fine.

Thoughts are appreciated,

Spike
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Re: Old Gas in Fuel Line

Post by justahoby » Sun Aug 26, 2012 11:45 pm

How much crap was in the tank?..
As I'm approaching 40,I still think I'm 20. What the hell is wrong with me?

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Re: Old Gas in Fuel Line

Post by USMC_Spike » Mon Aug 27, 2012 1:11 am

The tank was great. I removed it and had it cleaned 15 years ago.
At the time I coated the inside of the tank and it sat removed
and stored.

I also (or so I though) I blew out the fuel lines before I capped their ends too.
The whole thing sat in the garage for 15 years up on block stands.

What surprised me was that when installing the tank again, and before
adding the new fuel hose and new sending unit, we blew out the lines.
A bunch of yellow crappy looking fuel came out. I forgot to clean the
lines out with ether before starting it up.

I had a new carb one on it for a week before I realized how crappy it ran.
Talking with the manufacturer they were adamant that I get their right
carb for the street (carb one was a circle track racing carb). The tech
support guy told me I should have never had that carb and that I can't run
it on the street.

Then when I pulled the carb off to return it, I was amazed at the brown goowie
crap that was affixed to the throttle plates.

I would guess about 7 gallons of premium ran through it in total.

Now, with carb two a normal street strip carb it idled pretty good.

havent taken it out for a drive yet. But I'm concerned that the old fuel
reminants will gum up the new carb two.
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Dave Koehler
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Re: Old Gas in Fuel Line

Post by Dave Koehler » Mon Aug 27, 2012 6:36 am

Cap 1 end of the line and fill it with carb cleaner, let soak, blow it out, repeat, sleep well....or put in some new tubing.
Still in doubt then check the filter repeatedly until satisfied.
Dave Koehler - Koehler Injection
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http://www.koehlerinjection.com
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Re: Old Gas in Fuel Line

Post by headshop57 » Mon Aug 27, 2012 12:41 pm

Another problem with old gas, it can gum up intake valve stems/ guides, this can be a serious problem.

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Re: Old Gas in Fuel Line

Post by USMC_Spike » Mon Sep 24, 2012 11:04 am

By George, I think i've got it all cleaned out.

Thank you for the assistance.

Spike
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Re: Old Gas in Fuel Line

Post by Horndog » Fri Nov 16, 2012 12:15 pm

Hopefully you replaced all the old rubber lines.
Jim Horner

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Re: Old Gas in Fuel Line

Post by USMC_Spike » Fri Nov 23, 2012 7:53 am

Horndog wrote:Hopefully you replaced all the old rubber lines.
You old horn dog...

Yeah, that was the first thing I did.
The second should have been to clean
the steel line but "we" ended up just blowing it
out as the mechanic said that is all that was needed.

Then started to think about it and notice
some small globs of stuff.

Two Fuel filters later and
a spray with ether later it is running pretty well.

At the other end (from the carb) some would
say arse, but in reality it is the nose (really).

I started thinking (always a challenge) and thought
I'd attach some filters to the new fuel breather lines.

I've installed some fuel filters, mounted backwards
(they suck, they don't blow) on these breather lines.
Looks kind of hokey but what the hell, should work
fine. I taped them together so they wont rattle around
and also wire tied them so they won't rattle or get sqquashed.

Thinking, I replaced the old line from steet to pump to carb
with NOS rubber fuel line. Now that I've cleaned it up might
as well put NEW New Stock goodyear rubber fuel line there now.

Thanks for getting me thinking about this horndog!

Cheers,

Spike
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