The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - BEWARE of new fuel tank sending unit floats that leak. 67-72's

**GMCPaul** · 09-22-2018, 06:02 AM

A lot of research has been done on ethanol added to our fuel and the ACS ( American Chemical Society ) has determined the following.

Many will be aware of the problems of the adding of Ethanol to our petrol and its ability to 'un-solder' joints in fuel pipes and floats in carburetters (the Ethanol dissolves the lead and tin in the solder).

So fuel sender float problems check brass solder joint, carb. problem running rich all the time check to see if you have a failed brass fuel bowl float soldered joint.
Paul Jr @ GMCPauls
PS- Ethanol will also cause serious corrosion in metals such as aluminum, brass, copper, and steel. Our fuel tanks and pipes and other fuel related parts are made of mild steel and brass, as are the floats in the carburetors & fuel sending units. Today’s cars use plastic or coated tanks, stainless steel pipes and connections with modern plastic items, all immune to ethanol oxidization.

09-22-2018, 06:02 AM	#28
GMCPaul Senior Member Join Date: Mar 2000 Location: Rockville,In. USA Posts: 3,718	Re: BEWARE of new fuel tank sending unit floats that leak. 67-72's A lot of research has been done on ethanol added to our fuel and the ACS ( American Chemical Society ) has determined the following. Many will be aware of the problems of the adding of Ethanol to our petrol and its ability to 'un-solder' joints in fuel pipes and floats in carburetters (the Ethanol dissolves the lead and tin in the solder). So fuel sender float problems check brass solder joint, carb. problem running rich all the time check to see if you have a failed brass fuel bowl float soldered joint. Paul Jr @ GMCPauls PS- Ethanol will also cause serious corrosion in metals such as aluminum, brass, copper, and steel. Our fuel tanks and pipes and other fuel related parts are made of mild steel and brass, as are the floats in the carburetors & fuel sending units. Today’s cars use plastic or coated tanks, stainless steel pipes and connections with modern plastic items, all immune to ethanol oxidization. __________________ Secure Online Catalog for-GMCPauls Truck Parts Email- GMCPAULS@GMAIL.COM Last edited by GMCPaul; 09-22-2018 at 06:08 AM.