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#1 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,117
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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.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#2 |
Registered User
Join Date: Jul 2016
Location: Brandon,MS
Posts: 489
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Re: fuel pump starving for fuel
Did you ever get to the bottom of this issue?
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#3 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,117
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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.
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__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#4 |
Senior Member
![]() Join Date: Aug 2013
Location: Northern Santa Barbara County, California
Posts: 2,682
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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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#5 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,117
|
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. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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