Thread: Crud in carburetor and fuel line...again.

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I've been using 91 octane and my 496" BBC seems to get along pretty well with it. I'll get an occasional run-on, but not always, and not bad. What I do get is crud in the carb. I have to remove it about once a year and clean it out. There was a thread addressing this here awhile back. Part of the problem is my street rod doesn't get driven enough, so the "modern, remove all the crud from your gas tank and fuel system and deposit it in the carburetor, gasoline" just sits in the fuel system and creates...crud.
My question is: Would I be better off using the lower octane regular unleaded and just add octane booster? Would there be any less crud using regular unleaded? It's a bit of a PIA to have to jerk the carb every year and do a cleaning. Thanks for your comments.


Tom

sure it s not the rubber liner in the fuel line ? or sender in the tank breaking down . i built a 489 engine some time ago for pro street were the braided line linner was coming apart . for your fuel run the good stuff . put some stabilizers in it when it sit .i learn that the hard way myself on my car. would hardly run had to drain it gass was not old but the newer fuel must not be to hot any more for shelf life .the new fuel s must have some nasty stuff in it ? if i go thru may fuel lines nexit time i going all teflon braided the rubber gasket in the old holley blue pump was breaking down as well come to think of it

I had a case of the fuel cell foam not being compatible with the street pump gas

So, how would you deal with this...regular cleaning of fuel system (carb, fuel filter, etc.)?...replace gas tank, sending unit, fuel pump, and/or fuel line? Replacing the tank will be somewhat costly. I think a stock tank from Chevys Of The 40's is about $265. I just cleaned the carb and changed the filter last time and that sufficed. But if I have deteriorating components I think I should replace them. I'm just not sure how far I need to go? And will I need to do most, but not all, of it yearly?


Tom

Originally Posted by bgblk40

So, how would you deal with this...regular cleaning of fuel system (carb, fuel filter, etc.)?...replace gas tank, sending unit, fuel pump, and/or fuel line? Replacing the tank will be somewhat costly. I think a stock tank from Chevys Of The 40's is about $265. I just cleaned the carb and changed the filter last time and that sufficed. But if I have deteriorating components I think I should replace them. I'm just not sure how far I need to go? And will I need to do most, but not all, of it yearly?


Tom

well... put a clear fuel line fillter in line at carb .go back at the back of the car i use a marine water/ dirt .. filter like a oil filter spins on and off you have a filter on both ends of the line SO if your getting dirt up to the clear filter them your fuel line could be breaking down need to check it one part at a time. less the tank has a sealer that coming out of the tank ? cut the can off the first filter by tank it should show it catching alot of it. look in the tank for sealer

Thanks Pat. I really appreciate your recommendations.


Tom

I have read where the ethanol in gas was causing some older rubber lines to deteriorate. I have added stabil to one injected car that sits a lot.

here is one small article:

Ethanol Fuel - What's the dangers?
Simply put, ethanol is an excellent SOLVENT (dissolves plastic, rubber, fiberglass and more), and unlike MTBE ethanol will ABSORB WATER, which can cause serious problems to some engines.