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How To Test Fuel Pressure And Fuel Regulator || Jeep Sputtering E07
947 views · May 20, 2022
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Checking fuel pressure, our symptoms match what seems like a fuel issue, so we are going to show how to test fuel pressure on a Jeep Wrangler YJ. The top 3 issues that can lead to a fuel issue are the fuel pump, fuel filter, and injectors. We are testing the fuel pressure on the fuel rail that is just before the injectors, and the pressure issue could be anything before the injectors. 

Before doing the test we did run some Lucas fuel treatment to hopefully help, it sure won't hurt. Injector cleaners are effective at stopping blockages from forming, they are not always strong enough to remove substantial deposits. This didn't fix our issue but hurt nothing to try.

Blog with video on how to get OBD code, and were Danielle almost drove through the house: https://www.chrisdoeswhat.com/how-to-replaced-jeep-o2-sensor/

Tools and parts: 
WIX Fuel Filter: https://amzn.to/35bU7Yl
Lucas Cylinder Lubrication & Injector Cleaner: https://amzn.to/37i1dgy
Fuel Injector Injection Pump Pressure Tester Gauge Kit: https://amzn.to/3kcULuM
Milwaukee  18-Volt Drill and Impact Driver Kit: https://amzn.to/2HfipZ5
268-Piece Husky Mechanics Tool Set: https://amzn.to/3kuGUzD

Bad Fuel Regulator on a fuel-injected car can cause some apparent symptoms and we had most of these issues. The fuel regulator can cause low fuel pressure on acceleration or high fuel pressure at idle.
Exhaust burns your eyes
Backfires on deceleration
Black smoke from the tailpipe, not blue that is oil
Engine not running smooth or stalling on acceleration
Raw fuel is dripping out the tailpipe

Low Fuel pressure on fuel-injected cars can have similar symptoms to a Regulator failure that is not raising pressure with demand. We did not think we had a low-pressure issue because of the burning eyes and backfire on deceleration and thought we had too much fuel.

Jump To In Video:
00:00  How To Test Fuel Pressure And Fuel Regulator Intro
01:21 Jeep Wrangler Fuel Regulator And Test Valve Location
01:47 Test Fuel Pressure And Fuel Regulator Jeep Wrangler
02:44 Removing The Fuel Pressure Test Kit
03:12 Final Thoughts And What Is Coming Next

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