Bubbles in the fuel supply to carbs
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Bubbles in the fuel supply to carbs
In my 'so far futile search' for the cause of the exhaust popping in the right side exhaust, I temp'd in a clear vinyl tube from the fuel pump to the carbs. No specific reason for that tubing except it was what I had handy. While testing the engine, on the center stand, I noticed large air bubbles flowing thru the tube to the no. 3. I tightened the hose clamps on the suction side of the pump and the bubbles stopped and so did the popping. I am hopeful that his is the only cause of the popping. Since then I have installed a large (auxillary) clear fuel filter inline to act as a sediment bowl to catch the rust and other particulate from the rehabilitating fuel tank. That filter never 'fills up' with gas and may be introducing air into the steam of fuel. Until I get the tank cleaned up, I won't know.
- gltriker
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Re: Bubbles in the fuel supply to carbs
Scroll all the way down this page to Similar Topics.
and-
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
and-
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
Cliff (74yrs )
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RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
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Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
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^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- pidjones
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Re: Bubbles in the fuel supply to carbs
My clear inline filter on the pump inlet never has filled on the four GL1000s that I've owned.
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Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
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- CYBORG
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Re: Bubbles in the fuel supply to carbs
Same here. Never have seen a filter completely full.
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Re: Bubbles in the fuel supply to carbs
Regarding the air bubbles, what are the other possibilities for an air leak? The fuel pump itself?
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Re: Bubbles in the fuel supply to carbs
Ace
my 2 cents
Folks have "chased" air in the fuel lines and filter for years as a possible source of Carb issues. I have never heard of it resolving any issues and is generally accepted as a futile enterprise. The space above the fuel level in the bowls is open and any air pumped in there would immediately be evacuated to the atmosphere. If the bowls were a pressurized type there may be cause for concern. In our application I am pretty sure it is a normal state and all the bikes have it.
my 2 cents
Folks have "chased" air in the fuel lines and filter for years as a possible source of Carb issues. I have never heard of it resolving any issues and is generally accepted as a futile enterprise. The space above the fuel level in the bowls is open and any air pumped in there would immediately be evacuated to the atmosphere. If the bowls were a pressurized type there may be cause for concern. In our application I am pretty sure it is a normal state and all the bikes have it.
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and a whole garage full of possibilities!!
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Re: Bubbles in the fuel supply to carbs
I think this illustrates the reason of why Mr Honda ran black rubber fuel lines and a black metal filter !
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- Sidecar Bob
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Re: Bubbles in the fuel supply to carbs
I figure if I see bubbles moving through the filter fuel must be moving through it too...
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Re: Bubbles in the fuel supply to carbs
Thank you kindly Whiskerfish. You made sense of the issue with your explanation of the atmospheric vent. I will continue working to solve my right side 'popping' problem.
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