It is currently Mon Jun 23, 2025 9:28 am




Reply to topic  [ 10 posts ] 
 Mikuni Accelerator Pump ??? 
Author Message
MMT 1000 Club
User avatar

Joined: Sun Jan 25, 2009 8:09 pm
Posts: 1268
Location: North Texas
Post Mikuni Accelerator Pump ???
Made some adjustment to my carb because I was not getting full travel. Now when I throttle up, it will not go all the way back down to idle. it stays around 2000-2500 rpms. It's not the throttle cable as it releases all the way. Its the Accelerator pump not going all the way back down. I can push down on the pump with my thumb and it will release, but thats the only way. The 2 Adjustment screws will not fix the problem either.

Any suggestions?

_________________
WC Custom 1854


Sat Jul 18, 2009 11:15 am
Profile WWW
MMT 1000 Club
User avatar

Joined: Thu Jan 15, 2009 1:04 pm
Posts: 1438
Post Re: Mikuni Accelerator Pump ???
if it wasn't doin' that before..... go back & undo whatever u did to cause that. lol

_________________
I'm your Huckleberry......... http://www.youtube.com/watch?v=XqVe3xG-wos

I am proud to be an American, I am glad that I am free...
but right now I wish I was a dog, and Obama was a tree.


Sat Jul 18, 2009 12:53 pm
Profile
MMT Addict

Joined: Wed Jan 21, 2009 6:54 am
Posts: 563
Post Re: Mikuni Accelerator Pump ???
Check your choke make sure its off and you hace a little slack in the line.
Make sure the pump rod is not jamming in the guide thats part of the carb body. Mine froze solid.

JD


Sat Jul 18, 2009 1:03 pm
Profile
MMT 1000 Club
User avatar

Joined: Sun Jan 25, 2009 8:09 pm
Posts: 1268
Location: North Texas
Post Re: Mikuni Accelerator Pump ???
I have a little slack in the cable. I can take the accelerator pump and push it up by hand and it will drop all the way back down. When I twist the throttle it goes all the way up, but only drops about half way down.

I ordered the drag specialties throttle and custom cable from motion pro, so i might just wait to install it to see if that is the problem.

_________________
WC Custom 1854


Sat Jul 18, 2009 2:21 pm
Profile WWW
MMT 1000 Club
User avatar

Joined: Thu Jan 15, 2009 1:04 pm
Posts: 1438
Post Re: Mikuni Accelerator Pump ???
exactly what "adjustments" did u make to da carb? da only time I found my mikuni not openin all da way was cuz da cable wasn't gettin pulled all da way. I'm still tryin to figure out what "adjustments" u did...

_________________
I'm your Huckleberry......... http://www.youtube.com/watch?v=XqVe3xG-wos

I am proud to be an American, I am glad that I am free...
but right now I wish I was a dog, and Obama was a tree.


Sat Jul 18, 2009 2:59 pm
Profile
MMT 1000 Club
User avatar

Joined: Sun Jan 25, 2009 8:09 pm
Posts: 1268
Location: North Texas
Post Re: Mikuni Accelerator Pump ???
Tightend up the cable some and straightened up the white guide wheel that the cable rides on.

It looks like I may have overtightened the bolt that hold the cable and it is kinked...... The black vinyl is all chewed up right there.

_________________
WC Custom 1854


Sat Jul 18, 2009 3:22 pm
Profile WWW
MMT 1000 Club
User avatar

Joined: Thu Jan 15, 2009 1:04 pm
Posts: 1438
Post Re: Mikuni Accelerator Pump ???
a kink in da cable will do it. disconnect it from da carb and see if everything works right manually without da cable.

_________________
I'm your Huckleberry......... http://www.youtube.com/watch?v=XqVe3xG-wos

I am proud to be an American, I am glad that I am free...
but right now I wish I was a dog, and Obama was a tree.


Sat Jul 18, 2009 3:42 pm
Profile
MMT 1000 Club
User avatar

Joined: Sun Jan 25, 2009 8:09 pm
Posts: 1268
Location: North Texas
Post Re: Mikuni Accelerator Pump ???

_________________
WC Custom 1854


Sat Jul 18, 2009 3:53 pm
Profile WWW
MMT 1000 Club
User avatar

Joined: Thu Jan 15, 2009 1:04 pm
Posts: 1438
Post Re: Mikuni Accelerator Pump ???

_________________
I'm your Huckleberry......... http://www.youtube.com/watch?v=XqVe3xG-wos

I am proud to be an American, I am glad that I am free...
but right now I wish I was a dog, and Obama was a tree.


Sat Jul 18, 2009 3:59 pm
Profile
MMT 1000 Club
User avatar

Joined: Wed Feb 04, 2009 7:50 pm
Posts: 3833
Location: Old East Dallas, Texas
Post Re: Mikuni Accelerator Pump ???
Dude- you sure are changing lots of stuff at the same time. My advice is to get it right and then introduce new variables.

I will be back in a couple of weeks and we can go run.

_________________
Excel 1851F4 w/ MB35HD+R CDI with a little bit of this and little bit of that


Sat Jul 18, 2009 10:00 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 10 posts ] 

Who is online

Users browsing this forum: Majestic-12 [Bot] and 102 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: