L1 600 Fuel Pump Pressure Test - GSXR.com
 
LinkBack Thread Tools Display Modes
post #1 of 13 (permalink) Old 09-17-2019, 11:55 AM Thread Starter
Rider
 
New2Street's Avatar
 
Join Date: Apr 2017
Location: Western PA
Posts: 210
I finally picked up a fuel injector pump pressure test kit from harbor Freight. I may need some extra fuel line to make the right connections, but need to know if I hook the pressure tester directly to the fuel pump line and check the pressure it primes the engine at, or do I rig it inline so I can get the pressure with the engine running? Last time I checked the volume of fuel flow I had about 9 oz. Of fuel flow in 10 seconds. Thanks.
It is this kit:
Attached Thumbnails
Screenshot_20190901-192154_1568747420359.jpg  

Last edited by New2Street; 09-17-2019 at 12:10 PM. Reason: Added pic of test kit.
New2Street is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 09-17-2019, 02:30 PM
Lifetime Premium
 
rv6john's Avatar
 
Join Date: Mar 2013
Location: In the twisties around Hendersonville, NC
Posts: 8,001
The service manual lists an adapter so the gauge is "T"'d between the fuel pump and the fuel rail.

However, the manual also states to turn the ignition "ON", not start the bike. Turning the ignition ON would run the pump for a few seconds.

Just dead heading the fuel pump discharge to the gauge should give you almost identical readings since the bike is not running. And it is a lot easier to hook up.

Quote:
Originally Posted by Chuckster View Post
If you think reading is tricky, how the hell are you going to follow troubleshooting directions?
"Riding well is difficult, riding poorly is easy and painful."
- Nick Ienatsch


"We're all here because we're not all there" - Guy Favron on Gold Rush

K6 750
rv6john is offline  
post #3 of 13 (permalink) Old 09-17-2019, 03:00 PM Thread Starter
Rider
 
New2Street's Avatar
 
Join Date: Apr 2017
Location: Western PA
Posts: 210
Right! I'll try that first. If the manual says to test with the engine off it should work. Otherwise I'll get some fuel line and high pressure clamps to put the "T" connector in my kit in in place of the hose that runs between the pump output and fuel rail input. That will give me a "T" connection as well.
New2Street is offline  
Sponsored Links
Advertisement
 
post #4 of 13 (permalink) Old 09-17-2019, 10:28 PM
Rider
 
Vader225's Avatar
 
Join Date: Apr 2018
Location: Wilson NC
Posts: 338
Garage
Quote:
Originally Posted by New2Street View Post
Right! I'll try that first. If the manual says to test with the engine off it should work. Otherwise I'll get some fuel line and high pressure clamps to put the "T" connector in my kit in in place of the hose that runs between the pump output and fuel rail input. That will give me a "T" connection as well.
This is exactly how I did it, put the T in and check the system pressure. I have the same kit too it's pretty handy to have.

Not Grinding, Not Riding
Vader225 is offline  
post #5 of 13 (permalink) Old 09-18-2019, 02:17 AM
Novice
 
Join Date: Sep 2019
Posts: 76
I made my own.
RockerGuy is offline  
post #6 of 13 (permalink) Old 09-18-2019, 08:28 AM Thread Starter
Rider
 
New2Street's Avatar
 
Join Date: Apr 2017
Location: Western PA
Posts: 210
I tested straight from the pump, and it immediately primed to 46 psi according to this have, then slowly started dropping. I couldn't detect any fuel leaks, do I'm assuming it back flows some into the tank. I'll go get some fuel line and do the T connection with it running and report back. Thanks.
New2Street is offline  
post #7 of 13 (permalink) Old 09-18-2019, 09:38 AM
Novice
 
Join Date: Sep 2019
Posts: 76
The system is not completely air tight. If you take the assembly apart you'd know what I mean.
RockerGuy is offline  
post #8 of 13 (permalink) Old 09-18-2019, 10:07 AM Thread Starter
Rider
 
New2Street's Avatar
 
Join Date: Apr 2017
Location: Western PA
Posts: 210
I made the T fitting and tried again with the engine running. The Locktite threadlocker for gas did not seal the threads, so I was forced to use white Teflon tape, which held for this application. Pressure held at 46 psi, and here is a vid that may help, as you can hear the engine as well. Sound quality isn't the best from my cell pho
New2Street is offline  
post #9 of 13 (permalink) Old 09-18-2019, 10:07 AM Thread Starter
Rider
 
New2Street's Avatar
 
Join Date: Apr 2017
Location: Western PA
Posts: 210
New2Street is offline  
post #10 of 13 (permalink) Old 09-19-2019, 12:47 AM
Rider
 
Vader225's Avatar
 
Join Date: Apr 2018
Location: Wilson NC
Posts: 338
Garage
Everything looks good to me with the fuel pressure, it holds steady and doesn't move at all.

Not Grinding, Not Riding
Vader225 is offline  
post #11 of 13 (permalink) Old 09-20-2019, 07:24 PM Thread Starter
Rider
 
New2Street's Avatar
 
Join Date: Apr 2017
Location: Western PA
Posts: 210
The performance is poor again!! I have had the Set valve set to wide open and disconnected from the ECU for a little while. Since then, I tried disconnecting the O2 sensor by the CAT. I reported that the bike seemed to run much better with it disconnected. I then tried soaking the O2 sensor overnight in a mixture of gas and carb cleaner. The next day I blew it off with air, and once I was satisfied it was dry, reinstalled the O2 sensor. Bike ran like crap again, no better than before, so I once again unplugged the O2 sensor. This time, the bike is not running better with the O2 sensor unplugged. 🤔
When I start the bike it smells and sounds a little like it is running rich. When I rev the bike up, it still sounds like it is restricted or drowning from being way too rich? There is very little smoke from the exhaust, it looks normal. Is there a way to make the bike run a little leaner to see if the air/fuel mixture is what is causing the poor acceleration? This is really getting confusing and annoying! I'll even give out my phone number if someone thinks they can be of more help talking in person.
Thanks.
New2Street is offline  
post #12 of 13 (permalink) Old 09-22-2019, 04:55 PM Thread Starter
Rider
 
New2Street's Avatar
 
Join Date: Apr 2017
Location: Western PA
Posts: 210
Since the bike was not running as well this time with the oxygen sensor disconnected I decided to try plugging it back in again. This time, the bike is running better than it was with the oxygen sensor unplugged. I don't know why. I'll have to try again tomorrow to see if the bike is consistent. It's still not quite as good as it was the last time I had the oxygen sensor unplugged. kind of confusing.
New2Street is offline  
post #13 of 13 (permalink) Old 09-23-2019, 05:56 AM
Rider
 
PaulPhilly's Avatar
 
Join Date: Jul 2018
Posts: 425
Is the o2 sensor dirty, you could try pulling it and cleaning it, they make a spray. All your sensors talk to each other threw the wires too the ecm. Check all your plugs for loose/dirty connections if a sensors working and the ecm does not know it bc it’s getting a bad signal then it’s not talking correctly, and the machine will act irrationally.
PaulPhilly is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the GSXR.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome