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Member
- Joined
- Aug 8, 2011
- Messages
- 15
- Vehicle Year
- 1988
- Transmission
- Manual
I recently purchased this truck and when I did I had to replace all three of the fuel pumps. The high pressure frame mounted pump and the low pressure in-tank mounted pumps. After doing so the fuel gauge wasn't working and it hadn't before so I figured I run the front tank until it started to sputter then switch it over to the rear tank and just keep track of my miles. After the first fill up I put roughly 250 miles on the front tank it started to sputter so I flipped the switch to the rear tank which was full and figured it would just keep on goin. I had flipped the switch before to make sure that it was all working. Well after switching to the rear tank the truck just continued to die. Pull over and pop the hood and check the valve on the fuel rail...nothing but hot air comes out. I make sure I can hear the pump running in the rear tank and it is but still just hot air. I got 5 gallons of gas and put it in the front tank and away she went fired right up. So I thought maybe for some reason I just air locked somehow. I fill up the front tank and check the rear and its full also. I decided to burn the rear tank first this time to see how many miles It will do. Being a smaller tank I put 200 on it and decided to flip to the front thinking I have a full front tank. I put another 50 or so miles on it and it starts to sputter and dies on me again. Now I was confused. I had thought I was burning the rear tank the switch was on it for the first 200 miles. I put 5 gallons in the front tank it was empty when it should have been full. I got it to the station filled the front and tried to top off the back it was still full. I know the selector switch works because You can hear the rear pump engage when selected. But it still burns the front tank? Any ideas would be great...my search didn't turn much up.
