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Have an odd carb swap question
#5
There is no easy "this is it solution bu in '89 they used a stupid two fuel pump system.
A lift pump in the tank, low pressure like 15 psi, and a booster pump inside the frame rail.
The engine will run off the booster pump alone.
Low fuel pressure will not throw a check engine light or error code.
So might be worth a shot to check your fuel pressure.

Has it always ran like that? this is something new right?
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Messages In This Thread
Have an odd carb swap question - by Ogeechee 4x4 - 04-26-2008, 03:47 PM
Have an odd carb swap question - by Hotwhlz - 04-26-2008, 06:06 PM
Have an odd carb swap question - by Traveler - 04-27-2008, 03:45 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-27-2008, 06:52 PM
Have an odd carb swap question - by Traveler - 04-27-2008, 08:56 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-28-2008, 12:18 PM
Have an odd carb swap question - by Traveler - 04-28-2008, 04:51 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-28-2008, 06:00 PM
Have an odd carb swap question - by Traveler - 04-28-2008, 07:48 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-28-2008, 11:42 PM
Have an odd carb swap question - by Traveler - 04-29-2008, 10:27 AM
Have an odd carb swap question - by broncomatt - 04-29-2008, 03:33 PM
Have an odd carb swap question - by Traveler - 04-29-2008, 04:05 PM
Have an odd carb swap question - by broncomatt - 04-29-2008, 05:15 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-29-2008, 07:16 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-29-2008, 07:35 PM
Have an odd carb swap question - by Traveler - 04-29-2008, 07:53 PM
Have an odd carb swap question - by trkbilder - 04-29-2008, 09:30 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-29-2008, 10:15 PM
Have an odd carb swap question - by Traveler - 04-30-2008, 09:54 AM
Have an odd carb swap question - by Ogeechee 4x4 - 04-30-2008, 01:03 PM
Have an odd carb swap question - by broncomatt - 04-30-2008, 04:17 PM
Have an odd carb swap question - by Ogeechee 4x4 - 04-30-2008, 05:38 PM
Have an odd carb swap question - by broncomatt - 04-30-2008, 09:17 PM
Have an odd carb swap question - by Traveler - 05-01-2008, 01:06 PM
Have an odd carb swap question - by Ogeechee 4x4 - 05-01-2008, 04:17 PM
Have an odd carb swap question - by Audra - 05-01-2008, 11:05 PM
Have an odd carb swap question - by Ogeechee 4x4 - 05-02-2008, 12:01 AM

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