Question about 2005 Suzuki Boulevard C90
Backfiring means you have an air leak or a lean mixture. Look for leaks at the header pipes or perhaps a crack in the exhaust.
Cold air getting into the exhaust is usually what causes the backfire noise.
You may have a lean engine running situation but the bike would have other issues besides the backfire.
Let me know if you are having any other issues or if it just the backfire.
Posted on Jan 02, 2009
The popping sound is indicative of the Suzuki C90 line. To minimize the popping noises, perform the pair valve removal and switch to NGK Iridium spark plugs. Also, look into a Stage III kit for your bike and find a fuel map that best suits your needs. It won't eliminate all of the popping, but it will get rid of about 95% of it.
Posted on Jun 23, 2012
I have a C90T with all the same specs and even with the Bully you can get some backfiring. The only way I was almost totally able to stop the back firing is to complete the pair value modification (block or remove). Google 'Mocc's place'. He has detailed instructions on how to complete the mod. Very easy and makes all the difference in the world (even if you do not have the bully or pipe mods).
Posted on Apr 12, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 01, 2016 | 2005 Suzuki Boulevard C90
Apr 18, 2016 | 2005 Suzuki Boulevard C90
Feb 20, 2016 | 2005 Suzuki Boulevard C90
Apr 20, 2014 | 2005 Suzuki Boulevard C90
Aug 22, 2012 | 2007 Suzuki Boulevard C90 Black
Dec 14, 2011 | 2005 Suzuki Boulevard C90 Black
May 21, 2010 | 2008 Suzuki Boulevard
Jun 13, 2009 | 2005 Suzuki Boulevard C50
Jan 02, 2009 | 2005 Suzuki Boulevard C90
1,599 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: