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Old 06-07-2017, 08:04 PM   #1
HO455
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fuel pump starving for fuel

I have a 91 S10 4.3 Blazer with 179K on it of which I have put 100k on it. This spring I was having some issues with the engine and how it idled and ran. Short story is that I replaced the EGR valve, Coolant sensor and the fuel pump and filter. The engine returned to its previous form which at this point I believe was mostly due to the EGR replacement. The issue at present is that now when the fuel tank is at or below 1/3 of a tank the engine stumbles or dies under hard braking, turning or acceleration. This kind of issue didn't exist prior to the pump replacement unless the fuel level was at 1/8 or lower. I have pulled the pump again and inspected it. I tried repositioning the suction screen in a different direction, but it didn't seem to help. The old suction on the pump screen had the fitting in the center, but the new on is about 1 inch from the end. I bought a Delphi pump from GM and reused the old pump bracket. Any help would be appreciated as I am tired of driving like I am 80.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
http://www.superiorperformancenw.com
1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F1-3 Ford 4X4
If it breaks I didn't want it in the first place
The WMB http://67-72chevytrucks.com/vboard/s...d.php?t=698377
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Old 09-25-2017, 08:21 AM   #2
Jstock85
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Re: fuel pump starving for fuel

Did you ever get to the bottom of this issue?
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Old 09-25-2017, 09:11 AM   #3
HO455
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Re: fuel pump starving for fuel

No I haven't. I'm at the point of putting the old pump back in and see how it works. I just need to remember to not to put fuel in the truck.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
http://www.superiorperformancenw.com
1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F1-3 Ford 4X4
If it breaks I didn't want it in the first place
The WMB http://67-72chevytrucks.com/vboard/s...d.php?t=698377
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Old 09-26-2017, 07:50 PM   #4
Cali72K20
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Re: fuel pump starving for fuel

Have you tried rebuilding your TBI, mine had that issue and it helped out a lot, my fuel regulator was leaking.

http://www.autozone.com/fuel-deliver...bi-/182053_0_0

https://www.youtube.com/watch?v=_HLCid1Sh6M
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Old 10-17-2017, 12:00 AM   #5
HO455
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Re: fuel pump starving for fuel

No I haven't. The little Blazer has been ignored a lot lately now I have the Burban on the road.
Thanks for the information.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
http://www.superiorperformancenw.com
1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F1-3 Ford 4X4
If it breaks I didn't want it in the first place
The WMB http://67-72chevytrucks.com/vboard/s...d.php?t=698377
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