Backfire issue accel/deceleration.... - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
 1Likes
  • 1 Post By lesblank
 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 11-21-2018, 10:40 PM Thread Starter
Member
 
Zombieaddict94's Avatar
 
Join Date: Nov 2018
Posts: 35
Backfire issue accel/deceleration....

So got a motion pro, everytime I try to calibrate it to use it, the engine almost sucks the entire thing in it... any tips would be great. Also, heres a video of it running, no longer back fires when idling. But will after a few throttle hits and deceleration. Any ideas?
https://youtu.be/i-YS9Xrf3tM
Zombieaddict94 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 11-22-2018, 07:33 AM
KCW
Senior Member
 
Join Date: Sep 2016
Posts: 5,236
Garage
good video. Answered your questions in the other running thread where we have been discussing your carb issues:

https://www.starbikeforums.com/forum...ing-hot-2.html
KCW is offline  
post #3 of 5 (permalink) Old 11-22-2018, 08:04 AM
Moderator
 
lesblank's Avatar
 
Join Date: Jan 2014
Location: Houston, Texas
Posts: 4,252
Garage
Adjust PMS screws to eliminate back fire. You can not eliminate all but most. The exhaust popping is intensified with after market exhaust. It appears carb sync is still way off. Only suggesting is to turn the screw on way and see if it better, if not go the other way. When I'm syncing on a bike for the first time I have a piece of paper and write down which way I turn and how muck. That way I can always take it back to the original setting.

https://sites.google.com/site/vstar1...uning/backfire

https://sites.google.com/site/vstar1...mixture-screws
KCW likes this.

Les B.
2001 Vstar 1100 Classic (sold), Cobra Slash Cut full exhaust, Dropped 1 inch with lowering links, ORK, 4.5 inch handlebar risers, Ultimate passenger seat, Passenger pegs moved forward 4 inches, Handlebar clock, KN air filter, Viking saddlebags, Additional rear lighting
Loose nut "me" behind the bars
2006 Harley Electra Glide Ultra Classic

https://sites.google.com/site/vstar1100kb/home
lesblank is online now  
Sponsored Links
Advertisement
 
post #4 of 5 (permalink) Old 11-24-2018, 04:13 PM Thread Starter
Member
 
Zombieaddict94's Avatar
 
Join Date: Nov 2018
Posts: 35
All together sync and a little backfire. Should I redo the pms screws again and re sync then ride or ride first ? Heres a link to video

https://youtu.be/AGs7kFp_2YA
Zombieaddict94 is offline  
post #5 of 5 (permalink) Old 11-24-2018, 08:20 PM
Moderator
 
lesblank's Avatar
 
Join Date: Jan 2014
Location: Houston, Texas
Posts: 4,252
Garage
Sounded pretty good. I would ride it a bit to see how it does. Might try another 1/8 turn out on PSM. One other tip on backfiring, don't close throttle all the way went down when shifting. You will enhance the exhaust pop. Rev match the engine speed to actual speed. Hope that made sense, Just don't quickly close the throttle all the way to eliminate popping.

Les B.
2001 Vstar 1100 Classic (sold), Cobra Slash Cut full exhaust, Dropped 1 inch with lowering links, ORK, 4.5 inch handlebar risers, Ultimate passenger seat, Passenger pegs moved forward 4 inches, Handlebar clock, KN air filter, Viking saddlebags, Additional rear lighting
Loose nut "me" behind the bars
2006 Harley Electra Glide Ultra Classic

https://sites.google.com/site/vstar1100kb/home
lesblank is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star 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



Posting Rules  
You may not post new threads
You may not 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