Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Mechanical Issue

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Mechanical Issue

Old 02-08-21, 01:32 PM
  #1  
MooMan2321
Newbie
Thread Starter
 
Join Date: Feb 2021
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Mechanical Issue

Good afternoon!

I own a 2006 Honda Shadow Aero 750cc. It stopped working over a year ago and I've never worked on it before so I exasperated myself trying to figure out what was wrong with it. I ended up getting a carburetor rebuild kit and upon removing the carburetor I found the coolant had turned into a toothpaste consistency green goo. Carburetor was the cleanest thing on the bike but I replaced the parts anyway and then flushed the coolant. I put a vinegar water mixture in there, let it sit overnight, flushed and put coolant in it again.

Bike finally works, but now when I throttle it, it stops putting gasoline into the carburetor at about 50% throttle. Just cuts out and the engine spins down. I just did an oil change to be safe but that's not the issue it seems.

I'm kinda at a loss but if I had to guess Id say I messed up the carburator when I opened it up. I opened it up again and it does indeed stop putting gas in there when I throttle it too much. I don't know how to fix it.

Any tips or tricks? I'm kinda out of beer and patience here. 😅

Thanks!
MooMan2321 is offline  
Old 02-08-21, 01:35 PM
  #2  
Iride01 
more daylight today!
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 12,497

Bikes: Tarmac Disc Comp Di2 - 2020

Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Quoted: 5122 Post(s)
Liked 3,613 Times in 2,509 Posts
buy more beer. Read some other threads here and think about it some. Welcome if you care to stay!
Iride01 is online now  
Likes For Iride01:
Old 02-08-21, 01:54 PM
  #3  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,309

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1432 Post(s)
Liked 1,075 Times in 715 Posts
You DO understand that this is a bicycle mechanics forum?
dsbrantjr is offline  
Likes For dsbrantjr:
Old 02-08-21, 02:05 PM
  #4  
MooMan2321
Newbie
Thread Starter
 
Join Date: Feb 2021
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by dsbrantjr View Post
You DO understand that this is a bicycle mechanics forum?


My bad. 😂 Disregard, please
MooMan2321 is offline  
Old 02-08-21, 02:54 PM
  #5  
Troul 
:D
 
Troul's Avatar
 
Join Date: Oct 2013
Location: Mich
Posts: 6,172

Bikes: RSO E-tire dropper fixie brifter

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,184 Times in 1,460 Posts
make sure the hose is not collapsing. If the rubber lines are old, the likelihood of it squeezing off the feed is high. While the hoses are off, snake out the ports that the hoses go to. You can have pressure & not have enough volume.
__________________
-Oh Hey!
Troul is offline  
Old 02-08-21, 03:02 PM
  #6  
veganbikes
Clark W. Griswold
 
Join Date: Mar 2014
Location: ,location, location
Posts: 11,449

Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 3549 Post(s)
Liked 2,869 Times in 1,922 Posts
I wonder if any cyclists join up on motorcycle forums that aren't also motorcyclists and not realize it before hand?

I wonder why Honda called that bike aero? It would seem to me those crotch rocket style motor sickles would be more aero v.s. the more upright position like the Harley type stuff? I don't know.
veganbikes is offline  
Old 02-08-21, 03:10 PM
  #7  
Troul 
:D
 
Troul's Avatar
 
Join Date: Oct 2013
Location: Mich
Posts: 6,172

Bikes: RSO E-tire dropper fixie brifter

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,184 Times in 1,460 Posts
Originally Posted by veganbikes View Post
I wonder why Honda called that bike aero? It would seem to me those crotch rocket style motor sickles would be more aero v.s. the more upright position like the Harley type stuff? I don't know.
because #marketing//
__________________
-Oh Hey!
Troul is offline  
Likes For Troul:
Old 02-08-21, 03:41 PM
  #8  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,332

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1574 Post(s)
Liked 911 Times in 649 Posts
Originally Posted by MooMan2321 View Post
Good afternoon!

I own a 2006 Honda Shadow Aero 750cc. It stopped working over a year ago and I've never worked on it before so I exasperated myself trying to figure out what was wrong with it. I ended up getting a carburetor rebuild kit and upon removing the carburetor I found the coolant had turned into a toothpaste consistency green goo. Carburetor was the cleanest thing on the bike but I replaced the parts anyway and then flushed the coolant. I put a vinegar water mixture in there, let it sit overnight, flushed and put coolant in it again.

Bike finally works, but now when I throttle it, it stops putting gasoline into the carburetor at about 50% throttle. Just cuts out and the engine spins down. I just did an oil change to be safe but that's not the issue it seems.

I'm kinda at a loss but if I had to guess Id say I messed up the carburator when I opened it up. I opened it up again and it does indeed stop putting gas in there when I throttle it too much. I don't know how to fix it.

Any tips or tricks? I'm kinda out of beer and patience here. 😅

Thanks!
COOLANT?
Fuel I can understand.
Did you replace the fuel filter? It may be restricted enough to allow only partial flow. You need gas and you only get 1/2/ of what you need and it dies because the mixture leans way out.
You may have to replace a couple times if you didn't clean out the tank & lines.
Bill Kapaun is offline  
Likes For Bill Kapaun:
Old 02-08-21, 04:37 PM
  #9  
2cam16
Senior Member
 
2cam16's Avatar
 
Join Date: Oct 2016
Location: San Mateo,Ca.
Posts: 4,190

Bikes: TRIMMED DOWN THE HERD

Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 1050 Post(s)
Liked 755 Times in 513 Posts
Is it April 1?
2cam16 is offline  
Old 02-08-21, 06:00 PM
  #10  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,809

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1897 Post(s)
Liked 683 Times in 401 Posts
What type of coolant was in it and what type did you replace it with. some of the newer machines are coolant specific.
trailangel is offline  
Old 02-08-21, 06:07 PM
  #11  
Bigbus
Very Senior Member
 
Join Date: Mar 2018
Location: Always on the Run
Posts: 1,211

Bikes: Giant Quasar & Fuji Roubaix

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 413 Post(s)
Liked 343 Times in 244 Posts
Like Bill said, it's starving for fuel, whether it's the filter or dirty lines or even at the screen before the jet, it's not getting enough fuel and leaning itself out till it dies, unless you back off the throttle before it fully stops. I'll bet the tank is full of rust too. Give me a good old Harley any day. At least they're worth working on.
Bigbus is offline  
Old 02-09-21, 04:25 AM
  #12  
Geepig
Senior Member
 
Geepig's Avatar
 
Join Date: Sep 2020
Location: Eastern Poland
Posts: 736

Bikes: Romet Jubilat x 4, Wigry x 1, Turing x 1

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 194 Post(s)
Liked 196 Times in 147 Posts
I will gladly exchange it for any of my Romet folders, all of which run up to 'full throttle' if you really give the pedals enough 'gas', and will ensure you stand out from the crowd at your next bike meet.

Spare 'coolant' can be carried in the front basket to make sure it remains cool, and has never been known to take on the consistency of goo. What is more, the 'coolant' can be shared with friends, although frequent 'replacement' is recommended.

Last edited by Geepig; 02-09-21 at 04:28 AM.
Geepig is offline  
Old 02-09-21, 08:47 AM
  #13  
Buzzkill53120
Junior Member
 
Join Date: Jul 2017
Location: SE Wisconsin
Posts: 116

Bikes: Trek Domane SLR 2019, Trek Trek Madone 5.1 (2011), Trek 1400 (1991)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 41 Post(s)
Liked 59 Times in 27 Posts
Buzzkill53120 is offline  
Old 02-09-21, 11:35 AM
  #14  
cbrstar
BMX Connoisseur
 
cbrstar's Avatar
 
Join Date: Jun 2016
Location: Canada
Posts: 774

Bikes: 1988 Kuwahara Newport, 1983 Nishiki, 1984 Diamond Back Viper, 1991 Dyno Compe

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 399 Post(s)
Liked 108 Times in 69 Posts
The problem is one of the jets in the carburetor is plugged, It happened on one of my old CBR600's. Don't waste time on a carburetor rebuild. Go out and buy some "Seafoam green" and put it in your gas and drive around. Mine were so plugged it took two cans of the stuff. Try to keep it close to the speed where it stops working, and you will feel a nice surge in power once it's unclogged.
cbrstar is offline  
Old 02-09-21, 03:44 PM
  #15  
coffeesnob
Senior Member
 
coffeesnob's Avatar
 
Join Date: Jan 2016
Location: Va
Posts: 701

Bikes: Trek DS 8.3 - cannondale M500

Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 2633 Post(s)
Liked 138 Times in 79 Posts
Originally Posted by Buzzkill53120 View Post
oh, i bet the hells angel is scared..
coffeesnob is offline  
Likes For coffeesnob:
Old 02-09-21, 07:15 PM
  #16  
Bigbus
Very Senior Member
 
Join Date: Mar 2018
Location: Always on the Run
Posts: 1,211

Bikes: Giant Quasar & Fuji Roubaix

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 413 Post(s)
Liked 343 Times in 244 Posts
Originally Posted by coffeesnob View Post
oh, i bet the hells angel is scared..
That's a facetious comment if there ever was one. haha
Bigbus is offline  
Likes For Bigbus:
Old 02-12-21, 07:07 AM
  #17  
reconnaissance
Junior Member
 
Join Date: Sep 2016
Location: Texas Hill Country
Posts: 143

Bikes: Trek 850, Trek 510, Cannondale 300m, Specialized Rockhopper, Stumpjumper, Bianchi Virata

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 47 Post(s)
Liked 111 Times in 38 Posts
Originally Posted by cbrstar View Post
The problem is one of the jets in the carburetor is plugged, It happened on one of my old CBR600's. Don't waste time on a carburetor rebuild. Go out and buy some "Seafoam green" and put it in your gas and drive around. Mine were so plugged it took two cans of the stuff. Try to keep it close to the speed where it stops working, and you will feel a nice surge in power once it's unclogged.
You may be able to help clear those jet holes wit a piece of guitar string. Carburetor float level is an area of concern as well and must be properly adjusted. Too low and symptoms like yours appear.

Last edited by reconnaissance; 02-12-21 at 07:11 AM. Reason: clarity
reconnaissance is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.