Posted by Terry [65.95.4.163] on Saturday, April 27, 2013 at 14:01:35 :
In Reply to: Re: engine stumbles at speed posted by gmharris [71.105.35.169] on Saturday, April 27, 2013 at 12:05:01 :
I checked the fuel prssure and it's at 4.5 - 5 psi when running. I got about 1/3 - 1/2 cup of fuel in a container after running about 10-15 seconds. The pump also holds the pressure for about 5 minutes after shutting down the engine as well. I have noticed that when I hit a bump with the front wheels it seems to start the bucking motion. I wonder if the fuel is sloshing when the truck bounces and its causing the problem. I ran the truck with the gas cap off...same problems. I ran the truck with a fuel can to the fuel pump and eleminated all the stock lines and tank. The same thing happened again. I think it might be the bounce that causes this problem , just have to see whats I can do to fix it.
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