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gas filter location

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19_again

19_again

Jedi Warrior
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In recent work on the B I noticed a lot of what appears to be rubber "schmutz" inside my gas filter, which had been located between two pieces of rubber hose and positioned about halfway between the metal gas line and the carbs. Is there a reason not to put the filter immediately before the carbs rather than have another length of susceptible rubber hose between the filter and the carbs?
Thanks, Mike
 
heat is the only reason I can think of not to place it just before the carbs. The plastic see through filters might not be able to handle it. If you're getting rubber schmutz in your filter, it may be time to go get some new rubber fuel line/hose from your local parts store. The modern rubber fuel lines will resist the ethanol in modern fuel formulations much better than the old rubber lines on your car already, and it doesn't cost an arm and a leg to replace them.
 
Rob,
I did pick up the new fuel lines, and before placing them right back where they were it occurred to me to seek some advice. And just a few minutes ago while mowing the lawn, it also occurred to me that I could run the metal piping all the way to the carbs and then I figured that by having flexible rubber hose on either side of the filter it might act as a shock absorber in the event of a crash. The heat issue is another good point, but this particular filter is the see- through glass variety, all the better to see the crud.
Mike
 
flexible hose between the engine and chassis is also necessary because the engine rocks and vibrates while in use. metal lines all the way to the engine may fatigue over time. Though, I dunno if they would fatigue faster than rubber rotting... :confuse:
 
Mike, Make sure you are using the correct type of tubing. I use the Fuel injector tubing for the gas lines under the hood. I think I made a mistake once and it sounds just like you are describing. Black schmutz.
 
Hey Vince< I see the stable continues to grow, no worries I got the gas line from Brit Bits up here, they carry good stuff. The schmutz was from lines that were who knows how old. PM on the way.
 
Is "schmutz" one of those arcane british technical terms, like "gudgeon"?
 
As Rob says, another consideration is the ethanol. It attacks some older materials. The fuel injection hose material is more modern, more resistant to the effects of ethanol/alcohol.

Oh, and I'd counsel against those glass filters. There's nothing wrong with Fram metal bodied ones. You can blow 'em out on a paper towel to check the schmutz content.
 
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