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Old 05-19-2018, 11:10 PM   #1
curtisvitoria
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Default Shovelhead super E, fuel filter can't keep up

Super E on cone shovel, runs perfect, however the fuel drains from the inline fuel filter faster than it should. Wants to run out of fuel. Can't figure it out.
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Old 05-20-2018, 02:41 AM   #2
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Default Re: Shovelhead super E, fuel filter can't keep up

if it's a new problem and no changes had been made check the filler cap is venting properly, check carb float / valve are not sticking / blocked , if that is not an issue ditch / change fuel filter.

Last edited by Thunderbird; 05-20-2018 at 02:43 AM. Reason: cuz i can
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Old 05-20-2018, 11:00 AM   #3
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Default Re: Shovelhead super E, fuel filter can't keep up

As long as your screen is present in the 'cock, toss it.....I never run one for this reason.

I have heard that Pingel makes on that suffices. Never ran one, so I can't say whether it is for real or not.
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Old 05-20-2018, 11:06 AM   #4
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Default Re: Shovelhead super E, fuel filter can't keep up

Flow rate chart courtesy o' Pingel

http://www.pingelonline.com/prodcat/fuel-valves.asp

Filters from same (I might try one now that I see what they are)

http://www.pingelonline.com/prodcat/fuel-filters.asp
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Old 05-22-2018, 07:00 AM   #5
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Default Re: Shovelhead super E, fuel filter can't keep up

yeah ...I ran glass in-line fuel filter on my pan for a while ...nothing but problems .... vapor locks .
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Old 05-22-2018, 11:37 AM   #6
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Default Re: Shovelhead super E, fuel filter can't keep up

Pingle say's
Don't Let Your Stock OEM Petcock Be Your Carburetor's Main Jet
I call bullshit. While there would be truth in this on alcohol or nitro on gas I know of no examples of this happening. Including my own feeble attempts at wasting fuel.
I would like some feed back on this if anyone has traced back to this happening and the how were and when. Only way I could see this going down is BIG engine on the flats.

If you run a filter, use a small automotive filter (made to support a larger engine) and mount it as far out as you can. Never near or between the cylinders as it will vapor lock. Also keep the hose off the engine. Some will remember the factory wire double loop brackets to hold the fuel line off the engine that mounted to the carb studs and the plastic sleeves that many original bikes used to run the line threw. Those are still good ideas that smarter people than us came up with.
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Old 05-22-2018, 11:51 AM   #7
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Default Re: Shovelhead super E, fuel filter can't keep up

Reposition that petcock. You're asking that fuel to go up, then down. Once it's flowing head pressure at the tank SHOULD fix that, but I've had the same problem you are having, and it has to do with air that locks up. Get yourself one straight shot going down, and I bet that petcock behaves just fine. (Looks like a Pingel?)
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Old 05-26-2018, 09:02 AM   #8
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Default Re: Shovelhead super E, fuel filter can't keep up

get a metal filter at any autoparts store for a 1975 Ford Pinto....problem solved. been running them for years, never a problem at all, and, they are only like 5 bucks
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Old 05-26-2018, 12:34 PM   #9
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Default Re: Shovelhead super E, fuel filter can't keep up

Aint it threaded on one end? How do you intall it and where exactly? In all seriousness, I would like to know this one..
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Old 05-26-2018, 01:29 PM   #10
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Default Re: Shovelhead super E, fuel filter can't keep up

https://www.ebay.com/p/Fuel-Filter-W...189?rmvSB=true
there is a shorter one but I don't no the number off hand.
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Old 05-28-2018, 06:32 PM   #11
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Default

Sorry late reply, it ended up being the filter, was too dense and caused a vacuum. Drained the filter faster than the carb could keep up.
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Old 05-29-2018, 04:39 AM   #12
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Default Re: Shovelhead super E, fuel filter can't keep up

Quote:
Originally Posted by blewcrab View Post
yeah ...I ran glass in-line fuel filter on my pan for a while ...nothing but problems .... vapor locks .
Yep, dealing with the same issue now.
Ditched the glass for a K&N.
Im gunna try and "bleed" the line as well, as there always seems to be a pocket of air there that cant escape.
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