Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN









Search Auto Parts

Fuel Filter 3.9


  Email This Post



joejet26404
User

Feb 15, 2013, 1:18 PM

Post #1 of 6 (1735 views)
Fuel Filter 3.9 Sign In

I have a 2000 Dodge Dakota with a 3.9 engine. The truck has 73K miles. Can someone tell me if the truck has an in-line fuel filter? I am reading my Chilton's book and it only mentions the fuel filter that's located on the fuel pump. Also, inorder to remove the fuel pressure in the system, do I need to depress the schrader valve or is there another method? If this vehical has a Schrader Valve, can someone tell me where it is located.

Any feedback will be greatly appreciated.

Joe


speed
User

Feb 15, 2013, 1:28 PM

Post #2 of 6 (1727 views)
Re: Fuel Filter 3.9 Sign In

FUEL FILTER/FUEL PRESSURE REGULATOR

Side View - Filter/Regulator

A combination fuel filter and fuel pressure regulator is used on all engines. It is located on the top of the fuel pump module. A separate frame mounted fuel filter is not used with any engine.

Both fuel filters (at bottom of fuel pump module and within fuel pressure regulator) are designed for extended service. They do not require normal scheduled maintenance. Filters should only be replaced if a diagnostic procedure indicates to do so.

Fuel Pressure Regulator Operation: The pressure regulator is a mechanical device that is not controlled by engine vacuum or the powertrain control module (PCM).

The regulator is calibrated to maintain fuel system operating pressure of approximately 339 kPa + 34 kPa (49.2 psi + 5 psi) at the fuel injectors. It contains a diaphragm, calibrated springs and a fuel return valve. The internal fuel filter is also part of the assembly.

Fuel is supplied to the filter/regulator by the electric fuel pump through an opening tube at the bottom of filter/regulator.

The regulator acts as a check valve to maintain some fuel pressure when the engine is not operating. This will help to start the engine. A second check valve is located at the outlet end of the electric fuel pump. Refer to Fuel Pump-Description and Operation for more information. Also refer to the Fuel Pressure Leak Down Test and the Fuel Pump Pressure Tests.

If fuel pressure at the pressure regulator exceeds approximately 49.2 psi , an internal diaphragm opens and excess fuel pressure is routed back into the tank through the bottom of pressure regulator.

Both fuel filters (at bottom of fuel pump module and within fuel pressure regulator) are designed for extended service. They do not require normal scheduled maintenance. Filters should only be replaced if a diagnostic procedure indicates to do so.


Straight from alldata. No inline fuel filter only the two at the pump assembly. As for the schrader valve to relieve pressure its going to be at the fuel pressure test port on the fuel rail on top of the engine.





GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Feb 15, 2013, 1:30 PM

Post #3 of 6 (1724 views)
Re: Fuel Filter 3.9 Sign In

This is a non-maintenance fuel filter that doesn't need to be changed ever.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Feb 15, 2013, 1:47 PM

Post #4 of 6 (1708 views)
Re: Fuel Filter 3.9 Sign In

The pump will crap out way long before the filter plugs up...LOL





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Feb 15, 2013, 1:51 PM

Post #5 of 6 (1700 views)
Re: Fuel Filter 3.9 Sign In

Plus, it sits inside an agitating washing machine.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



joejet26404
User

Feb 15, 2013, 2:57 PM

Post #6 of 6 (1688 views)
Re: Fuel Filter 3.9 Sign In

Thank you to everyone who replied. I thought most engines had a second in-line fuel filter, but I guess I was wrong.

Thanks again for answering my question.

Regards,

Joe






  Email This Post
 
 


Feed Button




Search for (options) Privacy Sitemap