Engine lurching at 3K RPMs - Kawasaki KLR 650 Forum
KLR & Other Motorcycle Related Discussion Grab a seat and discuss whatever you like about the KLR or other related topics. Within reason.

  • 1 Post By gburke1015
LinkBack Thread Tools Display Modes
post #1 of 3 Old 12-17-2015, 12:14 PM Thread Starter
Join Date: Dec 2015
Posts: 1
Question Engine lurching at 3K RPMs

I have a 2015 KLR and it has a little less than 2K miles on it. It's been running perfectly until recently. Whenever I rev up from below 3k rpms to above 3k rpms the engine lurches like its going to run out of gas. The first thing I checked was how much gas was in the tank and it was full. I switched over to the reserve tank just to see if it would make a difference and it didn't. It has happened the past few time I've ridden but only after I've been riding for about 20 miles. It gets worse each time I ride it so I haven't ridden it for a week or two because I don't want to further damage anything if it is damaged.

sidenote: the engine temperature is normal when it happens

Any thoughts as to what might be wrong with my bike?
pleavitt likes this.
gburke1015 is offline  
Sponsored Links
post #2 of 3 Old 12-17-2015, 02:32 PM
Pretty in Pink, dunno why
Tom Schmitz's Avatar
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,626
The first thing that comes to mind is the tank venting system.

It could be a number of things, but the bike should be too new for most of the causes.

Try this: Take your second key and put it in the gas cap. Go for a ride, the sort that causes the problem. When it happens open the gas cap. If the problem goes away then it is the tank vent system.

Let us know and we can help trying to fix that (though it could well be that you're under warranty).


Tom [email protected]

“The muzzle of the Luger looked like the mouth of the Second Street tunnel, but I didn’t move. Not being bullet proof is an idea I had had to get used to.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
Tom Schmitz is offline  
post #3 of 3 Old 12-19-2015, 04:58 AM
CheapBassTurd's Avatar
Join Date: May 2009
Location: Indiana/ Michigan line at the Lake
Posts: 1,585
First, welcome to the site.

2nd: Is the lurching at ALL rpms above 3,000?

My first stab is what Tom said about the gascap vent.

The other would be fuel flow at a trickle, but not enough to
hold higher revs? This was the reason for asking about all rpms
compared to just one place on the tach.
This would lead back to the venting or a possible fuel flow issue.
Loose or cracked vac-hose from carb to fuel valve/ petcock?
Float not dropping far enough to fill quickly enough.
Holed diaphram in the carb. This would run fine on the low jet
until the needle comes on.
Faulty ignition.
Really none of these issues should exist other than the first. Crud/dust
clogging the tank vent in the cap, or the little rubber thingie in the cap stuck.

On the other end if the fix is not that simple, I listed some of the stuff which I
also believe is in the service manual troubleshooting guide. Quite possible to have
received a factory "booger" on a part that normally doesn't fail, or rarely does
unless one gets past the quality guy and makes its way onto a bike. A bad whatever
would crap out more or less right away. On my '09, many of the hoses and rubber
cover boots were dryrotting by the second summer and were all replaced over the
course of a year or so.

I hope ya nail this out quick and simple,
or at least free at the dealer.


This is my son, with whom I am well pleased." ----God
CheapBassTurd is offline  
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
RPMs with actual speed readings Idlewild294 1987 to 2007 Wrenching & Mods 9 06-12-2013 10:02 PM
ENGINE NOISES SANS MOOSE ENGINE GUARD X6_Hustler 1987 to 2007 Wrenching & Mods 2 02-12-2010 02:29 AM
lurching Colombiaklr 2008+ KLR650 Wrenching & Mod Questions 13 12-05-2009 08:13 AM
RPMs? sammy KLR & Other Motorcycle Related Discussion 3 04-14-2009 11:42 AM
Noob with engine swap question....Will the KLR 650 engine fit in a KLR600? Juice_Man 1987 to 2007 Wrenching & Mods 0 04-01-2008 08:00 PM

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