Technical Discussion Topics related to Technical Issues

fuel question

Thread Tools
 
Search this Thread
 
Old 03-04-2010, 06:22 PM
  #1  
Senior Member
Back Marker
Thread Starter
 
gixxerjohn's Avatar
 
Join Date: Nov 2009
Posts: 133
gixxerjohn is on a distinguished road
fuel question

ok guys i want to check this with you

bike has its pair system removed.

there is a line coming off the rear cylinder, vacuum line this connects to the rear of the petcock i believe?

there is the front line coming off the carb, which used to go to the pair, its plugged.

the bike has A LOT of backfire, with a dj kit, running dj specs, 4th clip, 2.25 turns out.

am i missing something ? to me the way the bike is acting is an air leak somewhere....

suggestions/ideas??

cheers
gixxerjohn is offline  
Old 03-04-2010, 07:15 PM
  #2  
Member
Squid
 
Third Echelon's Avatar
 
Join Date: Aug 2009
Location: Temecula, CA
Posts: 98
Third Echelon is on a distinguished road
running too lean maybe? what jets/exhaust combo are you running?
Third Echelon is offline  
Old 03-04-2010, 08:09 PM
  #3  
Senior Member
Back Marker
Thread Starter
 
gixxerjohn's Avatar
 
Join Date: Nov 2009
Posts: 133
gixxerjohn is on a distinguished road
180/185 2.25 turns out, jardine high mounts, stock filter, pair removed, etc......


just did a lil tweaking, did a lil sync on the carbs, prob seems better, will check again in the am when i can actually put load on it
gixxerjohn is offline  
Old 03-04-2010, 08:17 PM
  #4  
RK1
Senior Member
MotoGP
 
RK1's Avatar
 
Join Date: Aug 2007
Location: Way Out West
Posts: 2,547
RK1 is on a distinguished road
FWIW

Spec on the pilot screws is 2.5 out on 49 state bikes, 2.75 on California models.
RK1 is offline  
Old 03-05-2010, 03:00 AM
  #5  
Out of my mind, back in 5
MotoGP
 
Tweety's Avatar
 
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
Tweety is on a distinguished road
Originally Posted by gixxerjohn
ok guys i want to check this with you

bike has its pair system removed.

there is a line coming off the rear cylinder, vacuum line this connects to the rear of the petcock i believe?

there is the front line coming off the carb, which used to go to the pair, its plugged.

the bike has A LOT of backfire, with a dj kit, running dj specs, 4th clip, 2.25 turns out.

am i missing something ? to me the way the bike is acting is an air leak somewhere....

suggestions/ideas??

cheers
I'd double, triple quadruple check all the airlines involved in the PAIR removal... It's very easy to miss one, people have done it several times... Also the plugging might be leaking somewhere?

Other than that,like others have said try fiddling with the pilot screw... Those big honking carbs are might picky sometimes... Getting it half right is easy... Getting it spot on takes some tinkering and a few curses usually...
Tweety is offline  
Old 03-05-2010, 09:19 AM
  #6  
Senior Member
Back Marker
Thread Starter
 
gixxerjohn's Avatar
 
Join Date: Nov 2009
Posts: 133
gixxerjohn is on a distinguished road
hahah aint it the truth, thats why i enjoy lambada tuning lol on fi bikes

but the bike is fine for now, it will hit the dyno and get a fine tune
gixxerjohn is offline  
Old 03-05-2010, 05:33 PM
  #7  
Out of my mind, back in 5
MotoGP
 
Tweety's Avatar
 
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
Tweety is on a distinguished road
Originally Posted by gixxerjohn
hahah aint it the truth, thats why i enjoy lambada tuning lol on fi bikes

but the bike is fine for now, it will hit the dyno and get a fine tune
That's cheating...
Tweety is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Fox
Technical Discussion
4
12-14-2010 11:46 AM
seb421
General Discussion
26
02-04-2009 05:49 AM
bluethunder
Technical Discussion
6
06-03-2007 04:56 PM
hoghead5150
Technical Discussion
16
03-24-2007 01:37 AM
AbeFM
Technical Discussion
3
09-26-2005 09:47 PM



Quick Reply: fuel question



All times are GMT -7. The time now is 08:31 PM.