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Old 03-21-2015, 02:25 PM   #41
Cool Hand Lurker
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Default Re: Fuel line shield to prevent vapor lock?

Anybody who says there is no such thing as vapor lock simply has never had it happen to them. Yet.

I used to say that cholesterol did not cause heart attacks. My family had high cholesterol and no heart attacks, we all died of cancer. That was proof.
Then I had a heart attack.

Skeptics are not necessarily always wrong, they are just inexperienced.
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Old 03-21-2015, 04:31 PM   #42
C26Pinelake
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Default Re: Fuel line shield to prevent vapor lock?

Now there is a pyscological response if I have ever heard one ! Good answer !
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Old 03-22-2015, 10:27 AM   #43
Chris Haynes
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Default Re: Fuel line shield to prevent vapor lock?

Install an electric fuel pump and the problem will dissappear.
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Old 03-22-2015, 11:15 AM   #44
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Default Re: Fuel line shield to prevent vapor lock?

Quote:
Originally Posted by Y-Blockhead View Post
Seriously, Just a couple of weeks ago my Town Sedan started acting up after a short stop, missin' and belchin'. Ran fine all other times. Had me scratching my head because if I babied it (running at low RPM and short shifting) it would sort itself out and run fine again.
Well I believe I might have been creating my own problem. Usually when I stop and go into a store or whatever I shut of the engine and let the engine idle a bit, a habit I started while parking for the night.

Yesterday I ran to O'Reilly's to get some MMO and didn't shut off the gas. Came, started the car and everything was fine. Hmmmm. When I got home I went through my usual routine, shut off gas, etc. Waited a few minutes and started it up, poppin' and belchin'

Repeated this a few times and can't get it to miss when I leave the gas on.

Sooo, I guess I shouldn't be shutting the gas off for short intervals. Except when parked overnight when everything cools down

Actually when I first got the car ~7 months ago I never shut the gas off, even overnight, because it never leaked. But having read on The Barn about people's tank draining, I started shutting it off as a "safe" thing to do.

Last edited by Y-Blockhead; 03-22-2015 at 11:26 AM. Reason: Grammer
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Old 03-22-2015, 11:39 AM   #45
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Default Re: Fuel line shield to prevent vapor lock?

Royce,
I had a 36 HP VW engine that had a fresh rebuilt engine and the #3 exhaust valve would stick. I'd pull over a use a screw driver to pull it closed. I complained to my boss the mechanic that rebuilt it and he said use MMO. It never stuck again and that engine, 30 years later is still in the car.

I Also had a VW type two and always used MMO. When I eventually sold it the guy buying asked how it could even compression? The oil cooler blocks air to #3, so it was always a problem..

Does it work? I don't know but I'll keep using it.
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Old 03-22-2015, 04:04 PM   #46
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Default Re: Fuel line shield to prevent vapor lock?

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There must be many theories as to why some suffer with vapor lock or its symptoms, heat for sure is the biggest enemy, heat and carburetors don't go to well together, even fuel injected engines can be affected.

As we mostly are concerned with carburetors that work well enough that are as sophisticated as a flush toilet, with the vaporizer just above, heat shields and phenolic spacers worked well on my engine.

In the picture my heat shield faces directly at the exhaust manifold reducing the radiant heat to the cast iron of the carburetor, all the shields I have seen thru the years are this way, the phenolic spacer slows down the heat traveling back to the carburetor after shut down.

This reduced the carburetor temperature from 160* to 120*, another benefit was increased engine performance and perfect hot starts , I do have to admit that prior to this I never had any symptoms of vapor lock, --Go figure.
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File Type: jpg HEAT SHIELD AND SPACER.JPG (129.6 KB, 47 views)
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Last edited by Brian T; 03-22-2015 at 04:16 PM.
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