Gas Problem? Ideas? See video. Please help.

[PepeLoco]

Originally Posted by frank55a

Two suggestions:
1. Check how far the gas line extends past the farrel into the carb. This should only be a short amount, if to far the gas line will butt up against the filter in the carb and restrict your gas flow. You might first simply remove the filter in the carb and see if this helps.
2. Try about 4 oz Marvel Mystrey oil in a tank of gas. I always add it for a fill up. Drove back from Oshkosh in 95-100 degree temps across IL, IN, OH, and PA thru the mountains in western PA with no problems.

Frank, I thought the same thing and took it out long ago in this process.
I thought of the oil too, but we hear of reputable guys say they have never had nor seen vapor lock. This may not be vapor lock and not associated with the heat. I was going to take it for a spin after work and try to quantify the amount of air in that line during different engine and carb temps.

Thanks for the input.

[PepeLoco]

Sturgis,
I thought the cap might be an issue too, so I removed the cap during the testing.

Any other thoughts are hugely appreciated.

[BILL WILLIAMSON]

Someone posted recently that a ferrule fitted too deep at the sediment bowl can touch a "wall" inside & cause restricted flow?? Gotta' check that before I put on my new fuel line.
On my '30 that I sold, with standpipe filter in tank, cast iron sediment bowl, Zenith-2 carb, using only "Bad Bud's" crap gas, driving 200 miles + a week, I never had running problems or gum or goo or anything!! When draining cast iron sediment bowl, never got more than 2 or 3 water drops in a small baby food glass jar. Go figure that, I don't know either??? Before starting, I always pray, "Lord keep me safe & stopping well on this errand." Maybe that covers running well too????? Bill W.

[Kurt in NJ]

I am in the category of no visible "bubbles" in my fuel system, there has been a time that I thought I had "vapor lock", but it went away after I adjusted the points, although my car is near stock it has modified itself to give more carb heat to better vaporize fuel, and to compensate it has added more bowl vents in the form of a torn carb gasket ---with winter gas on a 95 degree day, long parade--idle speed for 1 hour ---then perhaps it is a little slow to get up to speed for a few seconds --then normal, the crack has exhaust blowing directly on the carb--you can feel it, i don't know what the carb temp is but you sure can't hold your hand on it.

the fuel pipe has had the burr removed from the end where the pipe was cut, the screens are original ,jets,float valve,float also original---cast iron sediment bowl (prove that it has a bubble in it)---nothing to worry about, no bubbles to see --therefor no problem

Yes I probably have gas boiling in the carb sometimes, but the car drives through it.

Have you tried having everything stock with original ford parts ---no modifications ???

I built the car stock, very few modifications ( B cam, diode cutout, Quartz Halogen headlight bulbs), since then it has thrived on neglect and been very reliable--other than for the halogen headlight bulbs it's the same as it got the blue ribbon in the 80s

have you tried the original fuel line routing using steel pipe, no low spots, gentle slope in horizontal runs ---no inline filter ( it is interesting, am working on a BMW Isetta the parts place for them warned me that I should never use a paper filter, that it would cause "vapor lock", this car also has a gravity system.) ---the stock screens won't pass anything large enough to easily clog a jet, too fine of a filter can restrict flow.

[BILL WILLIAMSON]

Has anyone ran with no hood for a long length of time when weather is extremely hot? Bill W.

[sturgis 39]

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[QUOTE=BILL WILLIAMSON;470866]Has anyone ran with no hood for a long length of time when weather is extremely hot? Bill W.[/QUOT


The first or second thing my brother and I did was to remove the hood. That was about ten years ago. The hood has not been on the car since we removed it. The car always over heated until we installed a new Brass Works Radiator. I never had a so called "Vapor Lock". We had a lot of plugged fuel filters. The gas tank was cleaned several times by a radiator shop. There are baffles in the tank that prevent the removal of all the rust flakes. We installed a stand pipe in the gas shut off valve and that seems to keep the big chunks out of the filters. We installed a see through filter between the shut off valve and the sediment bowl on the fire wall. It catches a lot of junk. The sediment bowl seems to collect some moisture. The little filter on the carburetor fuel inlet is always clean.

I think the car runs cooler without the hood. I run a two bladed fan because they look cool.

[Brobrian]

Wow, I love the heat shield. I was revving my motor at a stop light in 100+ heat the other day and told myself I would have to make just such a thing. And I'm goin to try to shield the floorboard while I'm at it.
Just saying, I like your enginuity!