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What is the specs for fuel pressure on a 1999 lexus rx300 3.0L

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

canbruce75
  • 1776 Answers

SOURCE: Need to know correct fuel pressure range for a

30-45 PSI (Pounds per Square Inch)

Attach fuel pressure gauge test valve as to release the pressure in the fuel system, then place the open hose end into a suitable gasoline container. Now proceed to bleed down the pressurized fuel system. Close the test gauge valve and place the ignition in the on position, utilize a scan tool to energize the fuel pump. This will bring the system to a stabilized fuel pressure that can be visually verified on the gauge. Hope this helped and best wishes.

Posted on Sep 10, 2009

  • 115 Answers

SOURCE: oil pressure specs for a 1999 cougar

Oil pressure should be 20-45 at 1500rpm.

Posted on Mar 14, 2010

redds55
  • 2620 Answers

SOURCE: Where's the fuel pump located at on a 1999 lexus

Its in the fuel tank.

Posted on Jan 06, 2012

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1999 Lexus rx300. New knock sensors, harness,etc. when I start it,it knocks ,has no power,very sluggish.


Check the pressure in the fuel pump
Check the fuel filter for dirt
When there is weak fuel pressure, it generates this type of failure
Also check the compression on the engine cylinders

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Fuel pump relay ? Have you checked base fuel pressure to find out if it is below spec ?

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Maybe your problem is with the one or many injectors, if just one is bad, you will have problems. Get yourself a multimeter and set it to read in ohms and find what spec the injectors should be at. If out of spec, then you need to replace that one injector(s).

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Your going to want and check fuel pressure to see if its in spec. If fuel pressure is low...I would check for a restriction.. like a plugged fuel filter or weak fuel pump.

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I would start by cleaning the mass air flow valve by spraying a non-chlronated brake to the inside of it cleaning the small wires inside of it then let it dry for 10-15 minutes before re-installing.If the problem still exist then check the fuel pressure and make sure its within its specs.If its not within the specs then replace the fuel pump.

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How much pressure should a fuel pump have on a 1999 buick lesabre have. I bought a fuel pressure gauge and have no idea what the pressure should be. It's showing 38 psi.


that is with in the spec range and is good.are you having problems with the fuel system.if so you can have good fuel pressure but poor fuel volume(not enough fuel quantity).it should be about 1/2litre(pint)in 30 seconds with engine running and no air in the gas(if you use a clear hose)

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My 2002 lexus gs300 started to consume a lot of gas,Why?? what is the solution??,,,please help me!!!


When was last healthy tune up? Plugs, all filters & fluids - especially fuel filter???? I'd start there and other things to check/do - make sure tire pressures are up to specs (on drivers door label), run a good fuel system cleaner through it & stay away from cheap fuel.

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1 Answer

It took 9 tries to start my 1999 Lexus RX 300, this is a intermittent problem.


sounds like low fuel pressure could be an array of things no engine light? even if no check engine light have it scanned for trouble codes its free at auto zone

Jan 06, 2011 | 1999 Lexus RX 300

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