Misfiring Problem with my 2002 Vulcan Classic 1500 FI. - Kawasaki Motorcycle Forums
 
LinkBack Thread Tools
post #1 of 9 (permalink) Old 07-02-2006, 10:38 PM Thread Starter
Junior Member
 
Join Date: Dec 2004
Location: West Palm Beach, Florida
Posts: 14
Misfiring Problem with my 2002 Vulcan Classic 1500 FI.

I am all of the sudden having trouble with my 1500 Classic FI (2002) misfiring after warming up. Due to the increased electric demand of the FI. I am wondering if a week battery could be the culprit. It's a 2002 1500 Classic FI and still has the origional factory battery in it. (4 years old) and the bike still starts fine. If I am dreaming don't hesitate to tell me. And if anyone has an idea as to what the problem could be could you guide me in the right direction? Would hate to take it to the dealer, for something simple. $$$
lylemills is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 07-02-2006, 11:21 PM
In Search of Perfect Tune
Forum Supporter
 
NY_Guy's Avatar
 
Join Date: Jun 2005
Location: Manhattan
Posts: 1,701
Unless there's a problem with the ECU, I don't think its current is the issue (driving lights or air horn consumes more amps/volts). Have you pulled the plugs to see if there's carbon build-up? You might also try some Sea Foam-- people on this forum have had good results with it. If electrical, more likely the rectifier or possibly a coil.

2006 Black Nomad w/ TFI
O2 Sensor Roadhouse 2/1
If you can't dance
it's too late to plow.
NY_Guy is offline  
post #3 of 9 (permalink) Old 07-03-2006, 12:04 AM Thread Starter
Junior Member
 
Join Date: Dec 2004
Location: West Palm Beach, Florida
Posts: 14
Quote:
Originally Posted by NY_Guy
Unless there's a problem with the ECU, I don't think its current is the issue (driving lights or air horn consumes more amps/volts). Have you pulled the plugs to see if there's carbon build-up? You might also try some Sea Foam-- people on this forum have had good results with it. If electrical, more likely the rectifier or possibly a coil.
Plugs clean. just ran a can of seafoam through it about a week or so ago. I cleaned the plugs and took for a ride, got about a mile or so and it started acting up again. Would pulling the codes from the ECU be of use? I tend to lean toward electrical, I'm thinking a bad coil. Cause it only starts acting up when it starts to get warm. And the coils would probably get warmer faster than the rectifier. Could be a plug wire starting to break down, the salt air down here in Florida does some strange things to motercycles.
lylemills is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 07-03-2006, 12:46 PM
Senior Member
BTK Expert
 
Join Date: May 2004
Location: Corpus Christi, Texas
Posts: 302
Send a message via Yahoo to lonestar
I think you are right that the problem is electrical in nature. Check all your connections to the battery and if you did not solder your connections on your ECU it would be a good idea to do so now. I had a short under the seat in my wiring harness that caused all kinds of problems for me until it was finally diagnosed and the whole harness was replaced. It was strange because it did'nt do it all the time. Have you blown any fuse's? Mine kept blowing the ignition fuse. Pull the seat and look very carefully at thunderside of the harness for any spot where it may be worn through and touching the frame.
Good Luck!
Lonestar

2002 VULCAN CLASSIC FI
lonestar is offline  
post #5 of 9 (permalink) Old 07-26-2006, 06:12 PM Thread Starter
Junior Member
 
Join Date: Dec 2004
Location: West Palm Beach, Florida
Posts: 14
Solved the misfiring on my 1500 FI Classic.

Quote:
Originally Posted by lylemills
I am all of the sudden having trouble with my 1500 Classic FI (2002) misfiring after warming up. Due to the increased electric demand of the FI. I am wondering if a week battery could be the culprit. It's a 2002 1500 Classic FI and still has the origional factory battery in it. (4 years old) and the bike still starts fine. If I am dreaming don't hesitate to tell me. And if anyone has an idea as to what the problem could be could you guide me in the right direction? Would hate to take it to the dealer, for something simple. $$$
Thought this would be of intrest to some of you all. The problem all boiled down to a bad (defective?!) spark plug. Plugs were only about 1000 to 1500miles old. On the cylinder that was missing it was the rear right side plug. The only one that I found a brown ring arround the insulator not on the business end but on the glass insulator right above where the ceramic and the steel mate. See attached document. Spoke to a mechanic friend of mine that works on high end import autos. When I told him on the phone what I found he did not even hesitate, he said that this plug was shot, I just described it to him he didn't even look at it.

Just installled a new set of plugs, and rode the bike for about 10 miles and no miss!!!! With the bad plug the bike would start missing within about 1-2 miles of riding. Looks like the mating process (ceramic to steel) failed on this particular plug. I have never in 30 years of riding seen a plug do this. And I have owned 2 harleys (older models) and have seen some ugly spark plugs come out of them often. But nothing like this, The brown ring looked like baked on oil and could be scraped off with a finger nail. Would be intrested in knowing if any one else has seen or heard of this? This problem has been pestering me for about 3 weeks now. Thought it was a wire shorting or possibly a spark plug wire breaking down. Isn't it amaizing how it's the simplest things that we over look when there is a problem.

Lyle

2002 1500 Classic FI.

Mods

VH Longshots. (open)
Attached Files
File Type: doc This is the area I found the brown ring.doc (39.5 KB, 90 views)
lylemills is offline  
post #6 of 9 (permalink) Old 07-26-2006, 09:05 PM
Senior Member
BTK Expert
 
Cabo's Avatar
 
Join Date: Apr 2005
Location: Dallas TX
Posts: 591
My bike started missing and I changed the plugs but it made no differance. I took it in since it is still under warrentee
Cabo is offline  
post #7 of 9 (permalink) Old 08-17-2006, 04:23 PM
Member
 
Join Date: Aug 2006
Location: Edmonton Alberta Canada
Posts: 39
Send a message via MSN to Gryff63
I too have this issue but with an 03 nomad. Not the misfire but a definite stalling. ECU shows no faults, plugs changed, air filter changed, seafoam ran through it. premium gas only. problem arises sporatically. This morning, no issues, yesterday, like riding a bronc, hard to keep running.
Gryff63 is offline  
post #8 of 9 (permalink) Old 07-01-2007, 08:41 PM
Junior Member
 
Madsdad's Avatar
 
Join Date: Jul 2007
Location: Fordyce, Arkansas
Posts: 5
Question 1500fi classic Misfire and stall

My bike just started this the other day. when it gets up to operating temp. it dosent want to idle. If you stop in traffic, you have to keep it revved to keep it running. it will also misfire occasionally going down the highway. Either time, the FI light comes on.
I have changed plugs, tried Seafoam, tried Heet, removed the ECU and checked the wiring, checked the wires at the battery, checked the ground wire on the engine, checked every wire I can see for chaffing etc...
I noticed today, it was running fine, and after about a 20 mile ride I stopped to get a drink. When I started to leave I had to really rev the engine and slip the clutch to get it on the highway. Once up to speed it ran fine. About 50 miles later I stopped for lunch, same problem. I went on with my trip for about another hundred miles, got mad at the bike and started heading back home.
Ya know those cartoons with the cloud over the guys head raining on him? That was me, literally ! ! I rode all the way back home in the rain with a misfiring bike. (you can eliminate the rain as a factor because it was running bad before he rain started ) LOL
Any ideas?
Madsdad is offline  
post #9 of 9 (permalink) Old 07-02-2007, 10:39 AM
Member
 
Join Date: Aug 2006
Location: Edmonton Alberta Canada
Posts: 39
Send a message via MSN to Gryff63
[QUOTE=Madsdad;724820]My bike just started this the other day. when it gets up to operating temp. it dosent want to idle. If you stop in traffic, you have to keep it revved to keep it running. it will also misfire occasionally going down the highway. Either time, the FI light comes on.
I have changed plugs, tried Seafoam, tried Heet, removed the ECU and checked the wiring, checked the wires at the battery, checked the ground wire on the engine, checked every wire I can see for chaffing etc...QUOTE]

Sounds like a a similar issue I had. I finally put mine into the shop and told them what I was epxeriencing. Took many hours of diagnosing, but they claim to have found a wire that was busted and fixed it. NOw it runs great. I added the Techlusion TFI and a Hyperthruster air ram to my machine and will put on vance and hines exhaust this winter. Get less mileage now but boy do I have power. Get your shop to run a full diagnostic on your bike. I too couldnt find any loose wires etc.
Gryff63 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Motorcycle 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



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