Fuel pump or filter maintains pressure? Also, what brands are best? - JeepForum.com
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post #1 of 1 Old 01-11-2017, 02:30 PM Thread Starter
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2003 WJ 
Join Date: Oct 2010
Location: Tampa
Posts: 24
Fuel pump or filter maintains pressure? Also, what brands are best?

2003 WJ 4.7

I haven't been able to find a definitive answer on which component maintains fuel pressure after the engine is turned off. Is it the external fuel filter, or the pump? I replaced the filter and I still have to cycle the fuel pump about 3 times before it will start. Once running, all is well, aside from the fuel gauge only showing full or empty (anyone have thoughts on that as well?). Should I replace the pump at this point, or could it be another culprit? Is the check valve that holds pressure located in the pump, or filter?

Also, any input on which brands of pumps to use / avoid, if that is the culprit?


2003 4.7 4x4 WJ Limited. All stock.
Future Plans: 242HD Swap, Budget Boost
phil04 is offline  

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