Sounds to me like maybe you have the vents to the carb bowls blocked.
On 10/9/2010 10:47 AM, Linda Grunthaner wrote:
> I am currently back to a reoccurring problem on my 1275 engine. I can start
> her fine carbs are clean ( I keep them clean) she has a new good running
> electric fuel pump and then after running for 5 minutes of running she has
> no gas. I have 2 filters at the electric pump on ether side so i can see the
> gas coming in and going out of the pump), I blew air in the fuel line from
> the tank, and no blockage was found. I even blew air into the fuel tank to
> be sure to clear any deposits (Frank's tip) I can get it to run via a soda
> bottle filled with fuel indicating zero clog at the line. It appears that I
> have some kind of suction blockage so I removed the gas cap and nothing. If
> I wait a day it is fine again for another 5 to 10 minutes of running then no
> gas. Any tips? BTW tank is shiny inside and clean and I have fuel.
> I remember when I first posted this problem last year (yes I STILL can't
> drive her off the driveway 12 months later) some have said not to have 2
> filters, some have said put the filter at the tank and others have said
> something else. I even recall someone saying I have a vacuum block. I am
> thinking I'll just remove both filters and give her a try and get back to
> the list with my results today. If it is a block via some type of sucking
> vacuum how do I get rid of that? Youtubes to follow.
> Thanks Linda
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