Go Back   Two Wheel Fix > In the Garage or Shop > Mechanical or Tech

Reply
 
Thread Tools Display Modes
Old 08-18-2010, 10:21 AM   #1
Rider
Moto GP Star
 
Join Date: Feb 2008
Posts: 12,156
Default Help, bike runs like shiz!

Ok, at the beginning of the season I replaced the plugs, air filter, oil, tore down carbs and cleaned them. Bike ran great for a while and the last time I rode it, but now after sitting for about a month the bike wont idle, has poor acceleration and backfires when I close the throttle after maintaining cruising speed on the highway. Too rich? I probably need to replace the needle and seat on the carbs but after that I have no idea what to do next. Gas is fresh and I ran Seafoam to clean out the carbs. No luck.

Any suggestions are appreciated.
Rider is offline   Reply With Quote
Old 08-18-2010, 10:32 AM   #2
Particle Man
Custom User Title
 
Particle Man's Avatar
 
Join Date: Nov 2008
Location: Central NY
Moto: 2003 SV650S
Posts: 14,959
Default

this may seem like a dumb suggestion (sorry) but if it's been sitting, check the airbox to make sure some critter hasn't built a home for itself in there... I know you said you replaced the air filter at the beginning of the season but didn't say if you checked it again recently... at my last place of residence, I let the bike sit for 2 weeks once and had similar issues. Turns out a mouse had made a home in the snorkle to the airbox...
__________________
I'm not "fat."
I'm "Enlarged to show texture."


Handle every stressful situation like a DOG: If you can't eat it or hump it, pi$$ on it & walk away.
Particle Man is offline   Reply With Quote
Old 08-18-2010, 10:38 AM   #3
shmike
Follower
 
shmike's Avatar
 
Join Date: Nov 2008
Posts: 5,549
Default

Turn off the choke.
__________________
Racing For Smiles
shmike is offline   Reply With Quote
Old 08-18-2010, 10:39 AM   #4
Rider
Moto GP Star
 
Join Date: Feb 2008
Posts: 12,156
Default

Quote:
Originally Posted by shmike View Post
Turn off the choke.
It's off.
Rider is offline   Reply With Quote
Old 08-18-2010, 12:57 PM   #5
goof2
AMA Supersport
 
goof2's Avatar
 
Join Date: Feb 2009
Posts: 4,756
Default

What is the bike?
goof2 is offline   Reply With Quote
Old 08-18-2010, 01:07 PM   #6
Amber Lamps
Moto GP Star
 
Join Date: Mar 2008
Posts: 14,556
Default

OIC you don't have time for us unless you need something....

I'd seriously check the air box, he's right about "critters"... Beyond that, pull the plugs and check if they are fouled. Look for a possible vacuum leak, perhaps a line fell off or had a crack that has gotten worse. Check, the fuel filter, I don't think you mentioned that. You haven't washed the bike recently have you? Sometimes water can get into connections at the ECU which can cause these problems. Especially if you have add on programmers... Make sure your plug wire connections are good and triple check that the choke isn't stuck open. Oh and if you have those carbs with the diaphragms on the side, make sure you don't have a hole in one of those.
Amber Lamps is offline   Reply With Quote
Old 08-18-2010, 01:14 PM   #7
Rider
Moto GP Star
 
Join Date: Feb 2008
Posts: 12,156
Default

Quote:
Originally Posted by goof2 View Post
What is the bike?
V-Star 650

Quote:
Originally Posted by Amber Lamps View Post
OIC you don't have time for us unless you need something....

I'd seriously check the air box, he's right about "critters"... Beyond that, pull the plugs and check if they are fouled. Look for a possible vacuum leak, perhaps a line fell off or had a crack that has gotten worse. Check, the fuel filter, I don't think you mentioned that. You haven't washed the bike recently have you? Sometimes water can get into connections at the ECU which can cause these problems. Especially if you have add on programmers... Make sure your plug wire connections are good and triple check that the choke isn't stuck open. Oh and if you have those carbs with the diaphragms on the side, make sure you don't have a hole in one of those.
Didn't wash the bike, it's been under a bike cover for the last month. The bike is also bone stock. I'll pull the plugs tonight to check or color.
Rider is offline   Reply With Quote
Old 08-18-2010, 03:07 PM   #8
Particle Man
Custom User Title
 
Particle Man's Avatar
 
Join Date: Nov 2008
Location: Central NY
Moto: 2003 SV650S
Posts: 14,959
Default

Quote:
Originally Posted by Rider View Post
Didn't wash the bike, it's been under a bike cover for the last month.
Even more of a possibility of a miserible mouse in that case... ask me how I know
__________________
I'm not "fat."
I'm "Enlarged to show texture."


Handle every stressful situation like a DOG: If you can't eat it or hump it, pi$$ on it & walk away.
Particle Man is offline   Reply With Quote
Old 08-18-2010, 03:15 PM   #9
lauralynne
667:Neighbor of the Beast
 
lauralynne's Avatar
 
Join Date: Mar 2008
Location: Everett WA
Moto: VTR1000, SV650, FZR400, CRF150
Posts: 1,403
Default

Quote:
Originally Posted by Rider View Post
Ok, at the beginning of the season I replaced the plugs, air filter, oil, tore down carbs and cleaned them. .

I think I found your problem....

__________________
WMRRA's slowest Expert!
triathalete, mom, racer, rider, friend, sister, wife - all in one tidy package!

Married my best friend 8/30/09
lauralynne is offline   Reply With Quote
Old 08-18-2010, 03:19 PM   #10
Rider
Moto GP Star
 
Join Date: Feb 2008
Posts: 12,156
Default

Quote:
Originally Posted by lauralynne View Post
I think I found your problem....

Reading comprehension fail. I said it ran great after that? What is your fucking IQ? any idea sweetheart?
Rider is offline   Reply With Quote
Reply

Bookmarks


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

Forum Jump


All times are GMT -4. The time now is 07:32 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.