Go Back   Motorcycle Forum > Motorcycle.Com General Discussion > Motorcycle Mods and Maintenance

Thread Tools
Old 02-10-2012, 02:49 PM   #1
Registered Member
Join Date: Jun 2010
Posts: 3
Default Idling issue with 05 Suzuki c50 boulevard cruiser

Hello everybody.... I am posting with hopes for suggestions!!!... I owned a 05 Suzuki c50 bvld cruiser for 3 yrs now so when I got it in 08 it was just 3 yrs old . For the first couple of yrs when I turned on the bike that is fuel injected, it would turn on throttled up till engine warmed up and then down with no problem and maintain low idle speed. As of lately and even after changing the spark plugs and air filter, the bike shuts off went first turned on. I have to throttle the bike manually for a few minutes and even then it will throttle down and sometimes shut off... This is especially the case when the weather is cold below 45 degrees !!!... Can you guys out there help a cruiser guy out ???... I have used some sea foam gas treatment and fuel injector cleaners to no avail !!!!... Thank you all in advance .... John ( joso4u)
joso4u is offline   Reply With Quote

Sponsored Links Remove Advertisements
Motorcycle Forum
Old 02-12-2012, 04:49 PM   #2
Easy Rider 2
Join Date: Dec 2010
Location: North Central Florida
Posts: 844

Originally Posted by joso4u View Post
I have used some sea foam gas treatment and fuel injector cleaners to no avail !!!!... Thank you all in advance .... John ( joso4u)
Alas, it's not likely to be that easy.

Are there any lights lit on the dashboard.....like an FI light ??

Fuel Injection is nice.......until it stops working and then you usually need professional help.

P.S. Is there any chance that your battery is going bad ?
If it's more than 3 years old, a new charged battery would be my only guess.
'11 Kawasaki Vulcan 900 C
Easy Rider 2 is offline   Reply With Quote
Old 02-13-2012, 06:14 AM   #3
The Spaceman
Registered Member
The Spaceman's Avatar
Join Date: Aug 2011
Posts: 2,448

The warm-up function is managed by your Fuel Injection (FI) system. The system is a combination of the fuel pump, a set of throttle bodies (akin to carburetor), a second set of butterflies on top of the throttle bodies, and a set of electronic controls, including a computer called the ECU.

I'll go out on a limb here and guess your Throttle Position Sensor(s) are failing. The problem is definitely your fuel injection system; if it's not the TPS, then it could be the secondaries are not operating correctly.

Unless you're pretty skilled with FI troubleshooting, you aren't going to fix it in your garage with pliers and a screwdriver. Your Suzuki dealer can plug in their diagnostic system and find the fault in 10 minutes.
318 curves in 11 miles."
The Spaceman is offline   Reply With Quote

Thread Tools

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off