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Unread 08-19-2013, 10:42 PM   #1
Sgondola
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Join Date: Aug 2013
Location: Windsor, Ca
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4.3L engine swap fuel problem

I have a GM 4.3L TBI with a fuel pressure regulator inside the TBI unit and want to know if I need to regulate the fuel coming out of the fuel pump into the TBI unit? If so, where would the regulator go, before or after the TBI unit?

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Unread 08-19-2013, 11:16 PM   #2
Holder350
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Well.....that depends....what kind of jeep is it going into??

GM TBI system only runs at like 15psi most 4.0 systems put out about 50psi.

I dare say if you hook it up without a regulator your likely to blow the internal TBI regulator.

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Unread 08-19-2013, 11:31 PM   #3
Sgondola
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If I need an inline fuel regulator, does it go between the fuel pump and the TBI unit?
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Unread 08-20-2013, 12:17 AM   #4
Holder350
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Yes. It needs to bring the pressure down to a manageable level for the TBI unit.

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95' XJ Country - Stock Skids - D30/D35 Limited Slip - 3" Lift - 31x10.50R15 - 4.0 HO - AX15 - NP231

98' XJ Classic - D30/C8.25 - 4.5" RC Lift - 33x12.50R15 - 4.0 HO - AW4 - NP231
Quote:
Originally Posted by Azzy View Post
You can tell the character of a person in how they treat someone who can do nothing for them.
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Unread 08-20-2013, 07:19 AM   #5
Sgondola
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Thanks!
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