Question for the Mechanics

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Jan 23, 2010 | 12:42 PM

74dart

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From: Shelby NC

Question for the Mechanics

I am trying to put a TBI 318 from a 90 fullsize van into my 89 Jeep Wrangler, and I was wondering what the Fuel pressure to the Throttle body is. Does anybody know?

Jan 23, 2010 | 02:40 PM

Hvytrkmech

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I believe 12-15psi. Most all TBI were low pressure systems. My neighbor has a 318 in a cj, goes like crazy.

Jan 23, 2010 | 04:54 PM

Red3quarter

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From: Valparaiso, IN

I think tim is right with those numbers. I had to check the fuel pressure on my brothers old dakota that had a 318 in it. Those numbers sound right.

Jan 23, 2010 | 06:32 PM

74dart

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From: Shelby NC

That's good because then I can use an aftermarket fuel pump and not have to figure out a was to make the one in the van work.

Jan 23, 2010 | 07:12 PM

grouch

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From: Evansville, In.

Quote:

Originally Posted by 74dart

I am trying to put a TBI 318 from a 90 fullsize van into my 89 Jeep Wrangler, and I was wondering what the Fuel pressure to the Throttle body is. Does anybody know?

With the engine running, you'll have 14-15 psi with the vacuum hose attached to the regulator. 18-20 with it unhooked.