Won't start!! - Honda Rebel Forum
 2Likes
Reply
 
Thread Tools Display Modes
post #1 of 27 Old 08-02-2019, 09:29 PM Thread Starter
 
Jonelli's Avatar
 
Join Date: Feb 2011
Location: HB, CA
Posts: 240
Won't start!!

I've got a couple threads on here, but I'm starting over with a where-I'm-at-now in the right section.
'09 Rebel, sat for 5 years, drained/filled new oil, installed new battery, wouldn't start, installed new spark plugs, wouldn't start, pulled the carb, disassembeled, soaked, cleaned, checked, and reassembled. Still won't start.
Almost ready to give up. I know it's not that complicated, but getting frustrated.

I pulled one of the spark plugs out and laid it on the engine and can see the spark. I gapped them with a feeler guage that the old ones fit, I don't remember the value.
I pulled the fuel line off the carburator and when I open the petcock and clear fuel flows out.
I rebuilt the carburator which was very lacquered, cleaned it completely. I tested all the ports and diaphragms, the jets are clean, the float pin valve moves freely, and its still the same after all that, won't start.

Other possible clues:
- It's the same 5 year old gas sitting in the tank, I'm assuming its still good?
- It turns fine with the starter, and when I open the throttle while it's trying to start, I can hear a pressure change in the cylinder (more air?)
- There is no other sign of any igniting of fuel/air at all. It just sounds like pistons moving air.

Suggestions?

2009 Rebel 250
Jonelli is offline  
Sponsored Links
Advertisement
 
post #2 of 27 Old 08-02-2019, 11:57 PM
Moderator
 
Join Date: Aug 2008
Location: Monroe, Louisiana
Posts: 27,901
Get rid of the five year old gas; it's no good and may gunk up your "clean" carb, if in fact it is clean. You need to install an inline fuel filter to keep any fuel contaminants from reaching the carb. There are many small passages in the carb than cannot be visually examined. If they aren't spotless, that could be a problem.
SoakedKarma and RonP like this.

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
Putting your bike year and model in your signature helps others help you!
Here's how: https://www.hondarebelforum.com/f19/...re-121087.html
flitecontrol is offline  
post #3 of 27 Old 08-03-2019, 03:07 PM Thread Starter
 
Jonelli's Avatar
 
Join Date: Feb 2011
Location: HB, CA
Posts: 240
Okay, got rid of the gas, filled with new gas. It was almost running last night, but I stopped when I thought about the old gas. I got it to start, but it won't idle. It only runs when the little side diaphragm pump is in the "open" state. When the throttle is at rest, and the little side pump is released, the engine won't run/idle. I tried messing with position of the air/fuel adjustment, but doesn't seem to make much difference at all.
So, right now, it runs when the throttle is open, and sounds right. Just no idle yet.

Any more suggestions?

2009 Rebel 250
Jonelli is offline  
 
post #4 of 27 Old 08-03-2019, 03:28 PM
Moderator
 
Join Date: Aug 2008
Location: Monroe, Louisiana
Posts: 27,901
Are you referring to the pump diaphragm, part 8 here? https://www.cheapcycleparts.com/oemp...31c/carburetor

Did you use the choke when starting? If the answers to each are yes, clean the carb. Hate to say it, but that's what's needed.

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
Putting your bike year and model in your signature helps others help you!
Here's how: https://www.hondarebelforum.com/f19/...re-121087.html
flitecontrol is offline  
post #5 of 27 Old 08-03-2019, 03:37 PM Thread Starter
 
Jonelli's Avatar
 
Join Date: Feb 2011
Location: HB, CA
Posts: 240
Quote:
Originally Posted by flitecontrol View Post
Are you referring to the pump diaphragm, part 8 here? https://www.cheapcycleparts.com/oemp...31c/carburetor

Did you use the choke when starting? If the answers to each are yes, clean the carb. Hate to say it, but that's what's needed.
Yes, Part 8, when throttle is open, the pump diaphragm opens. Engine runs great now.
Carb is most definitely clean. Choke not needed to start. It's JUST an idle issue now. Won't idle at all, just dies. I can hold the throttle open just a tiny bit (as long as the little pump diaphragm is open) and hold it at super low RPM and it will stay running. But as soon as I let go, no bueno.

I have a feeling I'm going to have to pull the carb again and check all the parts that affect idle. Could I have missed something? I read about the idle issues related to part #2 and the little brass guide piece. I honestly don't remember that piece. Could it have still been stuck in there when I disassembled and cleaned it?

2009 Rebel 250
Jonelli is offline  
post #6 of 27 Old 08-03-2019, 03:39 PM
 
SoakedKarma's Avatar
 
Join Date: Jun 2014
Location: Nevada
Posts: 1,217
little side pump??? are you speaking of accelerator pump on right side? it squirts one time as throttle applied.. has no other fueling functions..
Should never have to operate throttle while starting a Rebel..

everything you describe is associated with clogged idle circuit passages..

my first thought is contamination of your fresh rebuild, though many of us have had to clean same carb several times in row to obtain desired operation..

Otherwise have you checked
air fuel mixture screw 2 1/2- 2 3/4 out from lightly seated..
Idle set screw, right side of carb adjusted so throttle plate is barely cracked open

96 VS800 Intruder (sold 2018 ), 87 CMX250C Rebel,
79 CB400 Hawk (sold 93), 75 CB350 (sold 83), 71 CB350 (stolen 74)
Help others help you, Include Year in your signature...
SoakedKarma is offline  
post #7 of 27 Old 08-03-2019, 03:44 PM
Moderator
 
Join Date: Aug 2008
Location: Monroe, Louisiana
Posts: 27,901
OK, I was focused on "the engine won't run/idle" part. It starts, but won't maintain idle. As SK posted, sounds like the idle adjustment screw needs fine tuning.

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
Putting your bike year and model in your signature helps others help you!
Here's how: https://www.hondarebelforum.com/f19/...re-121087.html
flitecontrol is offline  
post #8 of 27 Old 08-03-2019, 05:05 PM Thread Starter
 
Jonelli's Avatar
 
Join Date: Feb 2011
Location: HB, CA
Posts: 240
Idle screw doesn’t seem to do much. Yes. I tried it out 2.75 turns. Also tried it more and less closed. No difference.

I guess I’m going to have to pull the carb back out and go over the idle path very carefully?

2009 Rebel 250
Jonelli is offline  
post #9 of 27 Old 08-03-2019, 08:18 PM
 
SoakedKarma's Avatar
 
Join Date: Jun 2014
Location: Nevada
Posts: 1,217
Quote:
Originally Posted by Jonelli View Post
Idle screw doesn’t seem to do much. Yes. I tried it out 2.75 turns. Also tried it more and less closed. No difference.

I guess I’m going to have to pull the carb back out and go over the idle path very carefully?
Idle Set screw is part # 10 in aforementioned parts diagram with big black thumb adjustment knob.. adjust to open throttle plate..

Air fuel mixture screw located underside of air horn that is the one you set at 2.75 turns part # 5 in diagram...

Honda uses several nomenclatures for the same parts.. image may help

96 VS800 Intruder (sold 2018 ), 87 CMX250C Rebel,
79 CB400 Hawk (sold 93), 75 CB350 (sold 83), 71 CB350 (stolen 74)
Help others help you, Include Year in your signature...
SoakedKarma is offline  
post #10 of 27 Old 08-03-2019, 08:31 PM
 
SoakedKarma's Avatar
 
Join Date: Jun 2014
Location: Nevada
Posts: 1,217
here ya go
pilot screw = air fuel mixture screw..
Idle set screw = throttle stop screw..
Attached Images
File Type: jpg MANUAL_Page_080aa.jpg (113.3 KB, 3 views)

96 VS800 Intruder (sold 2018 ), 87 CMX250C Rebel,
79 CB400 Hawk (sold 93), 75 CB350 (sold 83), 71 CB350 (stolen 74)
Help others help you, Include Year in your signature...
SoakedKarma is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda Rebel 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











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome