2009 kfx boggs 3/4 trottle - Kawasaki KFX450 Forum :: KFX450HQ.com
Engine/EFI/Drivetrain Discuss engine, fuel injection, air intake, and drivetrain modifications here.

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 04-11-2019, 05:58 PM Thread Starter
Junior Member
 
Join Date: Apr 2019
Posts: 1
View vadim_2020's Photo Gallery(0)
2009 kfx boggs 3/4 trottle

So ive been messing around with my kfx450r monster edition for a long time already and im at the point of quitting. Little side track needed new rings when purchased put new rings and then after first start up ever owning it came to this issue. So the quad fires right up like instant no issues in that, idles perfect and when i rev it up it sounds good if stab the throttle very quick it sometimes chokes up but thats not the issue. My issue is when i start driving it it has full power right about when im like 3/4 of full throttle it bogs up then i switch to second and it takes off again and 3/4 bogs up again and so on... Ive put a brand new spark plug, checked valve clearance timing chain all good, bought new fuel pump and filter ( not the whole system ) bought tps sensor adaptor checked and its good... what could be my issue or where to look what to look?
vadim_2020 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 04-12-2019, 01:44 AM
Senior Member
 
blue99stroker's Avatar
 
Join Date: Jan 2014
Location: Northern California
Posts: 1,926
View blue99stroker's Photo Gallery(0)
Might need a fuel adjustment.

Weak spark under load.

Regulator in the fuel pump assembly is weak or the screen before it is clogged.

08 KFX450r- DASA, FCI, Stg 2 Hotcams, Wiseco FI, Dynatek Coil

Race Tech dual rate front springs, GT thunder XC Link and Race tech spring, LSR +2 Arms and LSR Axle

Poly Case Saver, Streamline Stabilizer, PRM Skidplates, Pro Armor Bumpers, Tusk Heel Guards, IMS 3.7 tank, 6K HID

Next up: Dasa Port Job, JE Pro 12 12.8 piston
blue99stroker is offline  
post #3 of 4 (permalink) Old 10-31-2019, 12:14 PM
Junior Member
 
Dillon Devine's Avatar
 
Join Date: Oct 2019
Posts: 9
View Dillon Devine's Photo Gallery(0)
I'm having the same problem with PCV and auto tune and FCI
Dillon Devine is offline  
Sponsored Links
Advertisement
 
post #4 of 4 (permalink) Old 10-31-2019, 01:51 PM
Senior Member
 
Blayzin212's Avatar
 
Join Date: Jan 2019
Posts: 326
View Blayzin212's Photo Gallery(0)
I am running the pcv with autotune and fci.
Your having either a loss of air or too much fuel at the top end so it it bogs.

Make sure
Your air filter is clean
Could be a clogged injector
Your ignition coil may be going bad.
Make sure the vacuum hose from the throttle body to the map sensor is good and tight.

If theres something wrong with the map sensor the ecu wont know the current engine load and may throw off the injector, causing a the ecu to add to much fuel

Sent from my SAMSUNG-SM-G935A using Tapatalk
Blayzin212 is offline  
Reply

  Lower Navigation
Go Back   Kawasaki KFX450 Forum :: KFX450HQ.com > KFX450 Performance > Engine/EFI/Drivetrain

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KFX450 Forum :: KFX450HQ.com 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











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
KFX450 Build Story KawiKFX450 General Discussion 37 12-18-2018 01:47 AM
great forum..2009 kfx 450r wiseco fuel [email protected] intake yoshi muffler/pipe BEESST Member Introductions 2 08-04-2018 08:30 AM
2009 Kawasaki KFX 450R Factory Race Quad russellshumaker For Sale / Wanted 2 12-03-2016 04:52 PM
2009 KFX XC turn key racer SloScooter For Sale / Wanted 11 10-10-2016 09:43 AM
2009 kfx 450r Trailman25 For Sale / Wanted 0 03-16-2016 01:47 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