Author Topic: TBI problems still kicking my butt!.....  (Read 9158 times)

Offline greeneon_01

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Re: TBI problems still kicking my butt!.....
« Reply #15 on: June 27, 2010, 04:15:11 PM »
Ok so i got the kit...tapped right before the fuel filter after the tank selector switch i believe. It shows a steady 10psi. Shouldnt it be more like 25 or 30 psi?

Offline topp

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Re: TBI problems still kicking my butt!.....
« Reply #16 on: June 27, 2010, 04:16:54 PM »
Should be just between 13-15 for best results.....

12 or less and it'll run like crap, over 15 it'll flood

It's TBI, not TPI which requires 30+
'90 Suburban TBI 350

Offline greeneon_01

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Re: TBI problems still kicking my butt!.....
« Reply #17 on: June 27, 2010, 04:29:42 PM »
Oh...my bad. So i need to replace the fuel pump? Is there a seperate pump for each tank or one pump for both tanks? I'm not too familar with the dual tank setup.

Offline VileZambonie

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Re: TBI problems still kicking my butt!.....
« Reply #18 on: June 27, 2010, 07:20:25 PM »
Both pumps read 10 psig?
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Offline greeneon_01

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Re: TBI problems still kicking my butt!.....
« Reply #19 on: June 28, 2010, 06:07:14 PM »
Im not sure...the other tank is empty right now. But i think that side is weak anyways. Cause when i ran it off that side..it ran real rough. When i switched it over it seemed to run smoother. I thought it might have been bad fuel..but im starting to think otherwise.

Offline topp

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Re: TBI problems still kicking my butt!.....
« Reply #20 on: June 28, 2010, 07:53:46 PM »
Oh...my bad. So i need to replace the fuel pump? Is there a seperate pump for each tank or one pump for both tanks? I'm not too familar with the dual tank setup.


There is a pump in each tank.....
'90 Suburban TBI 350