CBR600 f4i starting problem - TwoWheelForum: Motorcycle and Sportbike forums
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 07-17-2005, 03:57 PM Thread Starter
 
Join Date: Jul 2005
Posts: 2
CBR600 f4i starting problem

I found some good info searching, but it didnt help.

My problem is this:

the bike will run while its cranking only. As soon as i let off the start button it dies. I have wired up the sidestand, bank angle sensor and clutch switch, so none of them should be a problem. Also, the fuel pump does not prime when the key is turned on.

i also had a multimeter on the pink wire on the ECM to verify it has 9vto it for the anti-theft. We also took the start switch button apart and cleaned the contacts on it, and everything looked normal.

ECM problem? im at a loss....

thanks for your help

Last edited by exodus1500; 07-17-2005 at 04:08 PM.
exodus1500 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 07-17-2005, 05:15 PM
 
Join Date: Apr 2005
Posts: 9,790
there was a few other bikes haveing starting problems earlier last week, there are many posts containing answers and leads.

Click here and if this doesn't bring any clues Try this one
and if those don't bring any luck PM larryg, or speedwerks

Last edited by R1up0n1; 07-17-2005 at 05:22 PM.
R1up0n1 is offline  
post #3 of 9 (permalink) Old 07-17-2005, 10:10 PM
First 1000 Member
 
Join Date: Jul 2004
Location: Louisville, KY
Posts: 408
Sounds like one of the safety items is not properly bypassed.

Larry

Rarely is the question stupid, but sometimes the answer is you need to run everything you read online through your own personal BS meter to determine if it makes sense to you.
larryg is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 07-17-2005, 11:46 PM
Moderator
Lifetime Gold Supporting Member
'07 Rally Veteran
 
jeeps84's Avatar
 
Join Date: Oct 2004
Location: Western N.C. (The Great Smoky Mountains)
Posts: 20,168
Send a message via MSN to jeeps84
Quote:
Originally Posted by larryg
Sounds like one of the safety items is not properly bypassed.

Larry

Submit your ride for the TWF Bike of the Month here


Currently ride 1987 GSXR 50, 1996 Ducati M900, 2005 GSXR 1000
jeeps84 is offline  
post #5 of 9 (permalink) Old 07-18-2005, 12:16 AM
 
Join Date: Aug 2004
Posts: 2,394
Quote:
Originally Posted by exodus1500
...Also, the fuel pump does not prime when the key is turned on...
Use your voltmeter to check the fuel pump relay and then the pump. On my old CBR, the kickstand safety switch can get crud in it because of the location. Check that one if your bike has it.
No Worries is offline  
post #6 of 9 (permalink) Old 07-18-2005, 12:33 AM
V-Twin Moddin
 
Gas Man's Avatar
 
Join Date: Jul 2004
Location: SE Michigan
Posts: 38,916
Quote:
Originally Posted by larryg
Sounds like one of the safety items is not properly bypassed.

Larry
Why are they bypassed in the first place.... hook em up and make sure they are in the right position and then try er again...




-Chris
aka Gas Man



Was: 2002 Kaw ZX-9R
IS:


is me till the
Gas Man is offline  
post #7 of 9 (permalink) Old 07-18-2005, 06:51 AM Thread Starter
 
Join Date: Jul 2005
Posts: 2
Quote:
Originally Posted by Gas Man
Why are they bypassed in the first place.... hook em up and make sure they are in the right position and then try er again...
my tip sensor was bypassed because it stopped working, and i bypassed the other things to make sure they werent the problem.

but anyhow......... here we go..



the battery was dead and, being sunday i couldnt find one, so i was running the power off the charger like i have done on several other bikes. after several hours of working on it, we hooked the oscilloscope up to the bike, only to find out that the charger doesnt send out the correct wave form, which in turn messes up the computer. The reason, im guessing that it starts with the starter engaged is because the alternator is putting out the correct waveform, then as soon as it stops, it goes back to the battery.

i thought a few times that it might just actually need a battery to work propperly, then just dismissed it.... lesson learned!
exodus1500 is offline  
post #8 of 9 (permalink) Old 07-18-2005, 06:59 AM
 
Join Date: Oct 2004
Posts: 6,147
Wow! Its amazing what happens when you do things the correct way...
bumblebee is offline  
post #9 of 9 (permalink) Old 07-18-2005, 10:47 PM
V-Twin Moddin
 
Gas Man's Avatar
 
Join Date: Jul 2004
Location: SE Michigan
Posts: 38,916
Believe it or not you can get MC batteries at places like Auto Zone/PepBoys/Murrays... just a FYI for next time.




-Chris
aka Gas Man



Was: 2002 Kaw ZX-9R
IS:


is me till the
Gas Man is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TwoWheelForum: Motorcycle and Sportbike forums 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