Welcome to the North American Subaru Impreza Owners Club Wednesday July 23, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning > Open Source Reflashes

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-26-2010, 05:25 PM   #1
Tommi300
Scooby Newbie
 
Member#: 238537
Join Date: Feb 2010
Default How do I log for fuel pumps?

There have been a batch of dodgy 255lph walbro fuel pumps knocking about but how would I know if mine was flowing 255lph or not with flow testing, is there some little trick with RR?
Cheers
tommi
* Registered users of the site do not see these ads.
Tommi300 is offline   Reply With Quote
Old 04-26-2010, 05:41 PM   #2
Brock31
Scooby Specialist
 
Member#: 128115
Join Date: Oct 2006
Chapter/Region: South East
Location: Wilmington, NC
Vehicle:
2004 4EAT Wagon PSM
enginuity is cool

Default

The only parameters I am aware of for logging the FP are the FP Duty cycle, Fuel pressure and fuel tank pressure depending on which ECU you have 16 bit or 32 bit.
Brock31 is offline   Reply With Quote
Old 04-26-2010, 05:45 PM   #3
Tommi300
Scooby Newbie
 
Member#: 238537
Join Date: Feb 2010
Default

I tried logging Duty cycle and it goes up to 100% but then again so would a faulty one, just wondered if there was anything else to look out for.
Tommi300 is offline   Reply With Quote
Old 04-26-2010, 11:59 PM   #4
Jubert69
Scooby Specialist
 
Member#: 167739
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: CT
Vehicle:
04 WRX
ej207 spec C 18g

Default

I would think your injector duty cycle would show a bad fuel pump. But this could also throw faulty injectors to the mix.

But of course you could connect a FP gauge(I know this doesn't answer your main question)
Jubert69 is offline   Reply With Quote
Old 04-27-2010, 11:05 AM   #5
Tommi300
Scooby Newbie
 
Member#: 238537
Join Date: Feb 2010
Default

The reason I ask is that when I mapped the car it was running sweet 11.5's using a LC-1 it was running 12's etc the other day so i had to richen it up. Could this be a fuel pump on its way out?
Tommi300 is offline   Reply With Quote
Old 04-27-2010, 11:39 AM   #6
Jubert69
Scooby Specialist
 
Member#: 167739
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: CT
Vehicle:
04 WRX
ej207 spec C 18g

Default

Could be many things, how much did the temperature change?
Jubert69 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
how do you test a fuel pump relay fyr3 Newbies & FAQs 2 04-04-2013 05:38 PM
how do you to that fuel pump? drewwrxrogers Water/Methanol Injection, Nitrous & Intercooler Cooling 18 12-01-2006 06:47 PM
How do I test for faulty Fuel Pump?? gtwagon941 Legacy Forum 4 10-03-2005 08:07 AM
how do my logs look? new map WRXout Engine Management & Tuning 26 03-22-2005 11:52 AM
how do install a walbro fuel pump Jimmy Normally Aspirated with bolt-on Forced Induction Powertrain 2 07-04-2001 04:06 PM


All times are GMT -4. The time now is 06:29 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.