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Walbro Fuel pump

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Old 06-07-2007, 03:40 AM
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Default Walbro Fuel pump
My car was running 11.6 a/r with factory pump, I choose to install a walbro pump for insurance, since I install the pump the car is runnning much leaner 12.3 aprox, so I cant enjoy the car. And the car is taking more time to start, its like the fuel rail is empty when the car stays to much time off. I check everything and the instalation its correct, I just give up because I dont find the problem.

If someone has a solution for me other than changing to factory pump, let me know.
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Old 06-07-2007, 03:31 PM
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what kind of injectors you running?
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Old 06-07-2007, 08:54 PM
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What PSI is it 12.3 AFR seeing?
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Old 06-08-2007, 02:33 AM
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Did you re-tune it after changing the pump. I would imagine with a change like that you'd have to re-tune.
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Old 06-08-2007, 03:25 AM
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Originally Posted by Whocares05050
What PSI is it 12.3 AFR seeing?

as soon you step on the throttle, before the pump change when you step on the throttle the afr goes to 11.6, now it stays on 12.3
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Old 06-08-2007, 03:27 AM
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Originally Posted by etsnet
Did you re-tune it after changing the pump. I would imagine with a change like that you'd have to re-tune.
no I didnt retune, my friend got the same pump without re-tune and his car is running well on afr
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Old 07-07-2008, 05:47 PM
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did you have trouble installing the walbro pump?
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