Yamaha Discussions about Yamaha ATVs.

2005 yfz 450 bog

  #11  
Old 01-02-2019, 08:41 AM
Weekend Warrior
Thread Starter
Join Date: Oct 2018
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes
zip tie mod is done
accelerator pump not spraying fuel
 
  #12  
Old 01-07-2019, 07:21 AM
Weekend Warrior
Thread Starter
Join Date: Oct 2018
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default

Any suggestions ?
or should I just pull carb to see if line is clogged?
 
  #13  
Old 01-08-2019, 09:11 AM
Range Rover
Join Date: Nov 2013
Location: Tennessee
Posts: 137
Likes: 0
Received 0 Likes on 0 Posts
Default

Have you taken the air box off and looked to see if it sprays gas when you stab the throttle, without it running. It only sprays solid when throttle goes from no throttle to wide open to overcome the quick gulp of air. Think of it like a pump spray bottle. Somebody may have improperly changed the timing of the spray. You would have to take cover off where the zip tie mod is and watch the arm that pushes the rod down that works the accelerator pump diaphragm you just replaced.
 
  #14  
Old 01-08-2019, 10:04 AM
Weekend Warrior
Thread Starter
Join Date: Oct 2018
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default

Ok Iíll look into if the rod is being pushed
and Iím not getting any fuel out of nosel when the quad is on or off?
thanks for input
 
  #15  
Old 01-08-2019, 01:17 PM
Range Rover
Join Date: Nov 2013
Location: Tennessee
Posts: 137
Likes: 0
Received 0 Likes on 0 Posts
Default

Was there a spring between diaphragm and pump cover, when you changed the diaphragm. You can take the float bowl off to check the accelerator pump function.
 
  #16  
Old 01-08-2019, 01:45 PM
Weekend Warrior
Thread Starter
Join Date: Oct 2018
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes it had a new spring I installed


This is kit I installed
 
  #17  
Old 01-08-2019, 02:58 PM
Weekend Warrior
Thread Starter
Join Date: Oct 2018
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default

Can someone verify witch side of diaphragm goes up?
i put the way that looked right but not sure?
 
  #18  
Old 01-08-2019, 03:19 PM
Range Rover
Join Date: Nov 2013
Location: Tennessee
Posts: 137
Likes: 0
Received 0 Likes on 0 Posts
Default

The side you don’t see goes up. The side shown is the bottom then spring and cover.
 
  #19  
Old 01-08-2019, 04:27 PM
Weekend Warrior
Thread Starter
Join Date: Oct 2018
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default

Ok I hate to admit this but...
i flipped over the diaphragm and shot carb cleaner down the passage & itís spraying gas now
and reving up with much less bog
i will dial in carb from here
i will update when itís running correctly
thanks for all input
 
  #20  
Old 01-08-2019, 05:21 PM
Range Rover
Join Date: Nov 2013
Location: Tennessee
Posts: 137
Likes: 0
Received 0 Likes on 0 Posts
Default

I think your pilot jet is a little big. Should probably be a 45. Is the bike completely stock, aftermarket exhaust, run an open air box? What your elevation where you ride?
 

Thread Tools
Search this Thread
Quick Reply: 2005 yfz 450 bog


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: