Can't start the bike - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 01-27-2015, 10:28 PM Thread Starter
1st Gear
 
Join Date: Nov 2013
Posts: 47
Can't start the bike

Been on the road from States for last 10 months. In Santiago, Chile now. Bike needed lot of maintenance so I took it to my friends shop and did lot of work on it in last few days. After putting it back together last night, I started it and it worked fine. Didn't ride it. This morning I tried to start it and carburetor started leaking on the out gas line. Non stop until I closed petcock. I managed to start it and take it for short ride but it kept sputtering and dying and it sounded horrible. I did nothing on carburetor past few days and it worked great before. Closest I got to carburetor was doing valve clearance. Later today I took carb off and cleaned everything. Petcock too. Put it back on, no leak but bike barely starts and keeps dying. Really strange and not sure what to look into now. I took it off again and installed carb from my friends klr but it was late and couldn't start the bike because of neighbors so I'll try in the morning. Only thing that was done in the meantime from last night when it worked fine and this morning is that my friend welded my kickstand with the kickstand on the bike and battery connected. Not sure if that could have mess something up!? I replaced my computer with one from his bike today and problem was still there. Any suggestion?
Renimus is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 01-28-2015, 04:38 AM
5th Gear
 
Join Date: Jan 2011
Posts: 4,398
The leakage likely was from poor float valve seal, perhaps a bit of dirt compromising float valve seating, rectified by your cleaning.

If bike runs with substitute carb, you've gotten a real heads-up on where to start.

I assume you disassembled the carb fully, cleaning all jets before re-assembly, float height correct, and no punctured float.

Recommend you check your diaphragm for proper sealing and any tears or holes; easy to get an air leak if the diaphragm isn't totally snugged in its groove around the carburetor mixture chamber circumference. Diaphragm air leak results in fuel-lean mixture at open throttle.

With suction on petcock vacuum hose, assume petcock opens. Assume "choke" (starting enricher) connected properly and functioning.

Assume spark; good spark plug and high-voltage wiring.

Sometimes, starting fluid can be your friend; will it start and run on starting fluid (have fire extinguisher handy)? If so, but not on gasoline, fuel system/carburetor problem likely.

Recommend jumping with a known hot battery (e.g., from automobile) and cranking with different choke/throttle configurations; even . . . with starting fluid, for diagnostic purposes.

I can't imagine how welding on the chassis or anything connected could cause a problem with starting; probably coincidental only, IMHO.
Damocles is offline  
post #3 of 7 Old 01-28-2015, 10:32 PM
2nd Gear
 
Join Date: Apr 2013
Location: Woodridge, IL
Posts: 120
^^

If it was leaking fuel from the carb, it's pretty likely your float needle is bad or just gunked up. And if it was gunked up your jets likely are, too.
kyxon is offline  
 
post #4 of 7 Old 01-28-2015, 10:33 PM Thread Starter
1st Gear
 
Join Date: Nov 2013
Posts: 47
After installing carb from my friends bike, still same problem. Installed his tank, same problem. Installed his spark plug, bike works fine. Put bike together with all my parts and his spark plug, works fine. Looks like what happened is that spark plug got fried when my friend did welding yesterday morning. For anyone reading this, don't make same mistake like I did with welding. If you do and have problems with bike, check electronics and spark plug first.
Renimus is offline  
post #5 of 7 Old 01-28-2015, 11:10 PM
5th Gear
 
Join Date: Jan 2011
Posts: 4,398
Quote:
Originally Posted by Renimus View Post
Installed his spark plug, bike works fine. Put bike together with all my parts and his spark plug, works fine. Looks like what happened is that spark plug got fried when my friend did welding yesterday morning. For anyone reading this, don't make same mistake like I did with welding. If you do and have problems with bike, check electronics and spark plug first.
Glad your bikes is running; still . . . can't visualize the mechanism whereby welding on your kickstand would fry your spark plug!

Still, I take a little credit, from my post above:
Quote:
Assume spark; good spark plug and high-voltage wiring.
Apparently, a good spark plug solved your problem. Congratulations!
Damocles is offline  
post #6 of 7 Old 01-30-2015, 02:09 AM
2nd Gear
 
Join Date: Jul 2010
Location: wasilla AK but stuck in CO
Posts: 452
ive seen welding fry computers and coils but ive never seen a plug go bad that way ..though it is possible it was cracked after installing it just decided to let go then ..ive seen new plugs be bad as well ..

2000 army green klr
2012 blue/white /blacked out daily driver

recession is when your neighbor looses his job
depression is when you loose your job
recovery is when Obama looses his job
wayne_l is offline  
post #7 of 7 Old 02-06-2015, 12:40 AM
4th Gear
 
GoMotor's Avatar
 
Join Date: May 2014
Location: Texas
Posts: 1,261
You have to wonder if the flooding carburetor didn't allow enough soot to deposit on the plug to cause it to misfire. It would be interesting to clean the plug and try it again.
GoMotor is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KLR 650 Forum 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



Similar Threads
Thread Thread Starter Forum Replies Last Post
need help .bike can crank but cannot start burnjr 2008+ KLR650 Wrenching & Mod Questions 17 03-08-2013 09:42 AM
Bike won't start Lockjaw KLR & Other Motorcycle Related Discussion 34 11-27-2010 01:19 AM
Bike wont start blprince 1987 to 2007 Wrenching & Mods 6 07-25-2007 08:19 AM
How to start bike in gear robsong 1987 to 2007 Wrenching & Mods 2 07-08-2007 10:19 AM

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