2001 F4 wiring/injector question - Page 2 - MVAgusta.net
 17Likes
Reply
 
LinkBack Thread Tools Display Modes
post #11 of 23 (permalink) Old 08-13-2019, 07:28 AM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 21,016
Send a message via Skype™ to silentservice703
That's as good as it gets. Timing was adjusted. The small opening settings are difficult at best.

Those that have ridden my 312R do not notice the dip or lack of power at low RPM....it is smooth as can be.
gotojoe and Drewbert34 like this.

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

Email/Paypal:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
Sponsored Links
Advertisement
 
post #12 of 23 (permalink) Old 08-13-2019, 08:00 PM
Senior Member
 
theknurl's Avatar
 
Join Date: Jul 2009
Location: Palos Verdes Est, SoCal, USA
Posts: 13,987
Send a message via Skype™ to theknurl
Wink ?

AFR 15.5 @ 6,000 RPM.....
No wonder it's got a hole in the power band
gotojoe likes this.

Noel-theknurl

The Forum Curmudgeon
I'm not PC either
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

'08 910R
'05 F4
ph. 310-414-7247 PST, GMT -8
PayPal;
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Skype; theknurl
theknurl is offline  
post #13 of 23 (permalink) Old 08-14-2019, 06:20 AM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 21,016
Send a message via Skype™ to silentservice703
Quote:
Originally Posted by theknurl View Post
AFR 15.5 @ 6,000 RPM.....
No wonder it's got a hole in the power band

Note that at run 2 that 15.5 is gone....

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

Email/Paypal:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
post #14 of 23 (permalink) Old 08-14-2019, 07:21 AM
Senior Member
 
gotojoe's Avatar
 
Join Date: Nov 2009
Location: Bellanagare, West Ireland 44 7875 299281
Posts: 9,932
Quote:
Originally Posted by silentservice703 View Post
That's as good as it gets. Timing was adjusted. The small opening settings are difficult at best.

Those that have ridden my 312R do not notice the dip or lack of power at low RPM....it is smooth as can be.
I now have a music bug in my head...." Smooth operator" !!!
silentservice703 likes this.
gotojoe is offline  
post #15 of 23 (permalink) Old 08-15-2019, 08:30 AM Thread Starter
Established Member
 
kevjayney's Avatar
 
Join Date: Oct 2007
Location: Scotland
Posts: 181
Quote:
Originally Posted by Robbedoes View Post
I am not completely sure, my knowledge is most about the Brutale. Does your bike have a 16M ecu? Anyway i think 2001 F4 does not have sequential injection and it does have batch fire injection so it squirts 1+4 and 2+3 at the same time (not timed in relation to the combustion cycle, it is crank angle timed i think). So if the connectors were marked correctly you set them back to as intended. If they were marked incorrectly you set them as unintended. If they are wired as unintended fuel atomisation might be slightly different than cyl 1+2. And the 2 cylinder might run slightly richer or slightly leaner. I have no idea of how much richer or leaner. You could double check by lifting the tank and take airbox off, start the motor and see if 1+4 and 2+3 squirt at the same moment. You could also multimeter the injector connector and ecu connector pins to see if 1+4 lead to the same ecu pin and 2+3 lead to the same ecu pin.

Pic of my ecu and it looks like 16m.

Took off the air box and started up the bike but there's no way you can see the injectors working as the butterfly flaps are covering the inlets, I will leave the leads with the correct numbers corresponding to the cylinders.

Sent away my injectors today, not sure when I will get them back, but I will report any findings.

Kev.
Attached Images
 
Drewbert34 likes this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Lang mae yer lums reek

2001 F4 750 1+1
2012 F3 675
kevjayney is offline  
post #16 of 23 (permalink) Old 08-15-2019, 08:40 AM
Senior Member
 
ViggenF4's Avatar
 
Join Date: Aug 2018
Location: Eastern Finland
Posts: 327
Did you try to adjust the idle CO from the trim pot?

Have you checked the CO values?

I highly doubt there is anything wrong in the injectors. Its all in the tuning, stock form its just awful!!!
Drewbert34 likes this.

F4 750 with Brutale 910S motor
ViggenF4 is offline  
post #17 of 23 (permalink) Old 08-15-2019, 10:12 AM
New Member
 
Join Date: Jun 2019
Location: Roanoke, VA
Posts: 23
Quote:
Originally Posted by ViggenF4 View Post
Did you try to adjust the idle CO from the trim pot?

Have you checked the CO values?

I highly doubt there is anything wrong in the injectors. Its all in the tuning, stock form its just awful!!!
I have to admit that I was shocked to learn / realize such a coveted bike had such terrible mapping; although, it not having dual injectors or a catalytic converter meant some trickery to pass emissions, I'm sure!

2000 F4S
AMB Air Filter
Drewbert34 is offline  
post #18 of 23 (permalink) Old 08-15-2019, 12:31 PM
Senior Member
 
ViggenF4's Avatar
 
Join Date: Aug 2018
Location: Eastern Finland
Posts: 327
The mapping is a definite weak point!

F4 750 with Brutale 910S motor
ViggenF4 is offline  
post #19 of 23 (permalink) Old 08-15-2019, 02:36 PM Thread Starter
Established Member
 
kevjayney's Avatar
 
Join Date: Oct 2007
Location: Scotland
Posts: 181
Quote:
Originally Posted by ViggenF4 View Post
Did you try to adjust the idle CO from the trim pot?

Have you checked the CO values?

I highly doubt there is anything wrong in the injectors. Its all in the tuning, stock form its just awful!!!
Once I get the injectors back from being cleaned/serviced and it is not running any better I will give this a try.

My main reason for getting this done is what happened because of perished internal fuel tank hoses.

https://www.mvagusta.net/forum/20-ma...-injector.html

Kev


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Lang mae yer lums reek

2001 F4 750 1+1
2012 F3 675
kevjayney is offline  
post #20 of 23 (permalink) Old 08-15-2019, 05:19 PM
Established Member
 
Robbedoes's Avatar
 
Join Date: Apr 2016
Location: Netherlands
Posts: 101
New Site Garage
Quote:
Originally Posted by kevjayney View Post
Took off the air box and started up the bike but there's no way you can see the injectors working as the butterfly flaps are covering the inlets, I will leave the leads with the correct numbers corresponding to the cylinders.
I am sorry for putting you in the wrong direction, i did that one time to check if all injectors were squirting (wide open throttle) but indeed you won't be able to see if the injection timing matches.
I do think you should verify if the injectors are wired correctly. You can pull all injector connectors (number them with tape) off, pull the ecu connector off (ECU pin 5 and 22 are the injectors pins, see manual). Get a multimeter set it to resistance (Ohm) or the buzzer function if it has it. Cyl 1+4 should be connected to pin 22. Cyl 2+3 should be connected to pin 5. And offcourse injector cyl 1 should be connected to cyl 4 and 2 to 3. (This is all based on the Brutale manual but it should be the same for an F4 with this ECU.)
kevjayney likes this.

2003 MV Agusta Brutale 750S
Robbedoes is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to use all of the features of the MVAgusta.net site, 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 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
Trackbacks are On
Pingbacks are On
Refbacks are On

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