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northerngmc · 12-22-2010, 07:50 PM

I do not think you can tap a tank to see if it is full or not. I have a 200 gallon heating oil tank on my house and I have tried full and empty, but do not think it is possible to gauge the amount inside by tapping.

Here is a link to a straight forward method to test a fuel gauge. http://www.6066gmcguy.org/Electrical-02.htm

Check the fuel line coming into the carb and see if it has fuel. My 60 GMC had a clear inline filter and it was pretty obvious when it did not have fuel.

I would guess your fuel pump may be causing the problem. Try pouring a small amount of gas into the carb and see if it will start and run for a few seconds.

12-22-2010, 07:50 PM	#4
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: Need Help with 69 C10 I do not think you can tap a tank to see if it is full or not. I have a 200 gallon heating oil tank on my house and I have tried full and empty, but do not think it is possible to gauge the amount inside by tapping. Here is a link to a straight forward method to test a fuel gauge. http://www.6066gmcguy.org/Electrical-02.htm Check the fuel line coming into the carb and see if it has fuel. My 60 GMC had a clear inline filter and it was pretty obvious when it did not have fuel. I would guess your fuel pump may be causing the problem. Try pouring a small amount of gas into the carb and see if it will start and run for a few seconds. __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!