Severe Lugging - Fueling / PC / Electrical Issue? - Wrist Twisters
 
Thread Tools Display Modes
post #1 of 21 Old 06-03-2015, 06:27 PM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Severe Lugging - Fueling / PC / Electrical Issue?

Wondering if you guys can help point me in the right direction in figuring out what is going on with my niner.

Issue: Bike is lugging / surging at low RPM, occurring most consistently around 3k rpm. Symptoms are lesser as the revs go higher. Bike has been cutting out occasionally both at a stop (idle just drops under 1k rpm and the bike might just stall then) and at speed, including on the highway. That was scary. I have also noticed that it is running hotter than normal, although nothing close to the red bar (more like halfway, whereas it use to barely go up). Maybe this has nothing to do with the issue.

This started yesterday on my way home in the afternoon. Outside temperature was not very high (18c or so?). This morning (about 11c, not perfect but not serious. Today late afternoon (about 24c), very severe, to the point that I don't want to ride it this way. It cut out a few times.

My bike has about 28k km (17.5k miles or so), and recently had valves adjusted and spark plugs changed. I have only had it since last summer but it has been nothing but reliable in this time.

I do have a PC3 with one of LDHs maps that was added in late in the season - the PC is hard wired so likely this is not a loose wire issue. I admit that I don't really know how to use the PC3 (hooking it up to laptop, resetting it, etc) and will read up on that to check it out. I think that the PC could be one possible issue.

Besides the PC3, what other checks should I be doing? I saw that someone here with similar issues had a crack in the spark plug boot (or something like that). Anything else I should check?

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
Sponsored Links
Advertisement
 
post #2 of 21 Old 06-03-2015, 06:29 PM
Community Moderator
 
g00gl3it's Avatar
 
Join Date: Jun 2009
Location: Idaho
Posts: 11,622
Rep Power: 1
  

Awards Showcase
Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance 
Total Awards: 3

Check the battery cables (loose) and the ground wire under the tank.

You running a power commander?

2009 Aprilia Tuono - Ginger
2001 XR650R BRP (Big Red Pig)
2006 Honda 599 - Ex wrecked it :-D
2007 Honda CB900F (sold)
2006 Honda VTX 1300C (sold)
YouTube Channel
g00gl3it is offline  
post #3 of 21 Old 06-03-2015, 06:51 PM
Road Pilot
 
Wolf's Avatar
 
Join Date: Mar 2013
Location: Dallas
Posts: 1,366
Rep Power: 1
 
Garage
Quote:
Originally Posted by g00gl3it View Post
Check the battery cables (loose) and the ground wire under the tank.
Hypothetically speaking, what would happen if that ground wire under the tank broke off?
Wolf is offline  
 
post #4 of 21 Old 06-03-2015, 07:02 PM
(Quintus) Pilus Prior
 
beefsalad's Avatar
 
Join Date: Dec 2007
Location: San Antonio, TX
Posts: 2,777
Blog Entries: 51
Rep Power: 1
 

Awards Showcase
Donation 
Total Awards: 1

FPR?

if you love your motorcycle, set it free.. if it comes back and hits you.. you highsided
beefsalad is offline  
post #5 of 21 Old 06-03-2015, 07:03 PM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Quote:
Originally Posted by g00gl3it View Post
Check the battery cables (loose) and the ground wire under the tank.

You running a power commander?
Yes, the PC3 I am referring to in the thread is Power Commander.

I too am curious as to the effect of a loose ground wire.

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #6 of 21 Old 06-03-2015, 07:04 PM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Quote:
Originally Posted by beefsalad View Post
FPR?
Sorry, is that the fuel pressure regulator? If so, will add it to the list of things to check.

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #7 of 21 Old 06-03-2015, 10:03 PM
Why's everything on fire?
 
CB700S's Avatar
 
Join Date: Mar 2011
Location: Dallas
Posts: 2,361
Rep Power: 1
 
Garage
If there's nothing obviously wrong, disconnect the PC3 and restore the wiring system, then see if it runs correctly. Sadly, the PC3 is not the most reliable thing at the best of times.

1986 Honda Nighthawk 700S
2002 Honda 919
CB700S is offline  
post #8 of 21 Old 06-03-2015, 10:52 PM
Burn-em Upus Asphaltus
 
rickard919's Avatar
 
Join Date: Apr 2008
Location: Calgary, Canada
Posts: 3,802
Rep Power: 1
 

Awards Showcase
Donation 
Total Awards: 1

I send the fpr. I had the same
Thing happen recently and it was the culprit.

Spoiler:

rickard919 is offline  
post #9 of 21 Old 06-04-2015, 09:08 AM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Just read the thread on the FPR - I did notice smelling gas (which I normally don't) so this might be the culprit.

I will try changing it. Cheap part, right?

Will post update once I do this.

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #10 of 21 Old 06-04-2015, 09:40 AM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Geez, local dealership has this part on back order until July 17th!

Ordered the part from partzila instead but with shipping and the exchange rate it won't be pretty.

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #11 of 21 Old 06-04-2015, 09:48 AM
Tesserarius
 
Nickr919's Avatar
 
Join Date: Oct 2013
Location: Corona
Posts: 734
Rep Power: 1
 
I had an issue where the positive/negitive wires that go the ignition coils were faulty. The heat from the engine cracked and severed the famale connector on the wire causing the same symptoms your describing.

While changing out the FPR is a good thing to do in general. Check the connections throught the bike. And remember

K.I.S.S.

Nickr919 is offline  
post #12 of 21 Old 06-04-2015, 10:35 AM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Quote:
Originally Posted by Nickr919 View Post
I had an issue where the positive/negitive wires that go the ignition coils were faulty. The heat from the engine cracked and severed the famale connector on the wire causing the same symptoms your describing.

While changing out the FPR is a good thing to do in general. Check the connections throught the bike. And remember

K.I.S.S.
Thanks, I'll add that to the list.

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #13 of 21 Old 06-04-2015, 12:08 PM
Discen
 
carotman's Avatar
 
Join Date: Apr 2011
Location: Montreal South Shore, Qc, Canada
Posts: 286
Rep Power: 1
 
Check the spark plug leads. I had mine running on 3 cyls below 3k rpm because of a bad lead.

carotman is offline  
post #14 of 21 Old 06-04-2015, 01:01 PM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Quote:
Originally Posted by carotman View Post
Check the spark plug leads. I had mine running on 3 cyls below 3k rpm because of a bad lead.
The plugs were just changed but I guess that I will have access when I lift the tank - no harm in checking them at that time as well.

Thanks!

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #15 of 21 Old 06-12-2015, 10:06 AM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Ok, I changed the fpr and there is no improvement.

The hazard light on the dash related to fueling (bottom left) did blink on and off, seemingly for the first time.

I also noticed when pulling my vacuum hose that there seemed to be a small crack/tear in the vacuum hose close to where it connects to the fpr. I did not make much of it at the time but now am wondering if this could be the cause of the problem? It seemed to be already there (I don't think I made it) but I probably did not improve things. Any comments on the effects of a (lightly) cracked/torn vacuum hose would be great.

Someone also mentioned that maybe I need a TRS adjustment - what does that involve?

Of course, I still intend to go through the list of items that was mentioned in this and other threads.

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #16 of 21 Old 06-12-2015, 11:58 AM
Discen
 
carotman's Avatar
 
Join Date: Apr 2011
Location: Montreal South Shore, Qc, Canada
Posts: 286
Rep Power: 1
 
Start the bike, let it rough idle and check the exhaust pipes temperature. Maybe one of them will be a lot cooler than the others. This is an indication of that cylinder not firing.

carotman is offline  
post #17 of 21 Old 06-12-2015, 01:09 PM
Why's everything on fire?
 
CB700S's Avatar
 
Join Date: Mar 2011
Location: Dallas
Posts: 2,361
Rep Power: 1
 
Garage
Vacuum leak = running rich.

1986 Honda Nighthawk 700S
2002 Honda 919
CB700S is offline  
post #18 of 21 Old 06-23-2015, 11:41 AM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Ok, so here is the update. I was riding it and it died - and there was no power at all on it (the dash went all wonky). Given the lack of power, we checked the battery to start and the wires were loose. Mind you, not very loose at all but you could wiggle them around a bit. We disconnected and reconnected as tight as possible and the issue is resolved...

Yes, that's right, the issue was loose battery wires. Yeah, I feel like a dumbass.

Anyways, let this thread serve as a lesson that electrical issues do not always show up with the symptoms that you would expect. And yes, KISS.

Cheers

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
post #19 of 21 Old 06-23-2015, 12:40 PM
Primus Pilus
 
BockHawk's Avatar
 
Join Date: Jan 2006
Location: Normal, IL
Posts: 3,432
Rep Power: 1
 
Garage
I had this same problem once. Figured it out in the parking lot of my lunch destination. Sorry that took so long, but glad to hear you got it mended.

2002 919 40,000 miles
"racing is life...everything else is just waiting"
BockHawk is offline  
post #20 of 21 Old 06-23-2015, 05:44 PM
Community Moderator
 
g00gl3it's Avatar
 
Join Date: Jun 2009
Location: Idaho
Posts: 11,622
Rep Power: 1
  

Awards Showcase
Wrist Twisters Event Attendance Wrist Twisters Event Attendance Wrist Twisters Event Attendance 
Total Awards: 3

Quote:
Originally Posted by g00gl3it View Post
Check the battery cables (loose) ...


2009 Aprilia Tuono - Ginger
2001 XR650R BRP (Big Red Pig)
2006 Honda 599 - Ex wrecked it :-D
2007 Honda CB900F (sold)
2006 Honda VTX 1300C (sold)
YouTube Channel
g00gl3it is offline  
post #21 of 21 Old 06-23-2015, 06:59 PM Thread Starter
Milites Gregarius
 
Join Date: Aug 2014
Location: Ottawa
Posts: 116
Rep Power: 1
 
Quote:
Originally Posted by g00gl3it View Post
Yeah yeah... (there is no bow down smiley that I can see)

2005 Honda CB919F
2003 Honda CBR954RR (sold)
1990's Suzuki TS200 (sold)
1987 Kawasaki Ninja 750R (sold)
1984 Kawasaki GPz 550 (sold)
Dirt Bikes
op_man1 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Wrist Twisters 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 Off
Pingbacks are Off
Refbacks are Off

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