+-
« previous next »
Pages: [1]   Go Down

Author Topic: No Idle?  (Read 1484 times)

Offline

  • Trade Count: (0)
  • Weekend Warrior
  • ****
  • Posts: 162
  • Gender: Male
  • who brakes later is more quickly
  • Location: Germany
No Idle?
« on: September 23, 2012, 01:27:19 pm »
Hi there
my mikuni 38 dont have idle motor dies without throttle.
I put a 22,5 pilot jet and a 400 main jet in the carb.
1 or max 3 kicks and the engine jump up, and have no idle?

The gas air Screw on the left side is 1/2 screw out is not enough
normally is 1 1/2 out,
but thats not all! The clip of the needle its on the last upper Ring.
and the idle screw is complete in!
What the ....  Is this?
My badest idea is the engine have a water leake?
Logged
under-steers is when you see the tree the goes in. overrides is when you hear the tree which you were going on.
"Walther Röhrl "

Share on Bluesky Share on Facebook

Offline

  • Administers / Announcements / Maintenance
  • Trade Count: (0)
  • Administrator
  • Newbie
  • *****
  • Posts: 9
  • Administers / Announcements / Maintenance
  • Location: Internet
Re: no idle?
« Reply #1 on: September 23, 2012, 01:41:18 pm »
Did you check the basics on your carburetor, check pilot jet to make sure it not clogged? Did you check float level, check to see if the float valve seat is not worn.
Logged

The Brekman Group

Offline

  • Trade Count: (0)
  • Weekend Warrior
  • ****
  • Posts: 162
  • Gender: Male
  • who brakes later is more quickly
  • Location: Germany
Re: no idle?
« Reply #2 on: September 24, 2012, 01:38:16 am »
Jess
Carb basic is checked,
Float lever and the jets are brand new.
its the same problem, my petcock is also brand new.
but when i left the quad for a week in my garage,
 i have a little fuel leak under my quad!
Logged
under-steers is when you see the tree the goes in. overrides is when you hear the tree which you were going on.
"Walther Röhrl "

Offline

  • Trade Count: (0)
  • Newbie
  • **
  • Posts: 18
Re: no idle?
« Reply #3 on: October 02, 2012, 07:10:43 am »
The leak could mean your needle and/or needle seat are worn.
Logged

Offline

  • Trade Count: (0)
  • Pro Member
  • ********
  • Posts: 853
  • Gender: Male
  • Location: Chatam NY Upstate
Re: no idle?
« Reply #4 on: October 02, 2012, 07:14:43 am »
Usually its the o-ring on the float valve that goes bad. Even more so with the crap fuel being sold to us. Not sure what the fuel quality is like on the other side of the pond? but, I would be suspect of the o-ring. I just replaced my float valve due to a leaky o-ring.
Logged
92 LT250R- Bartlett racing prototype big bore. Wide, Low,  and studded

91 LT250R Mickey Thompson stadium racer

87 LT500R- Mostly stock

89 LT500R IceZilla, mods TBA

Offline

  • Trade Count: (0)
  • Forum Moderator
  • Elite Member
  • *********
  • Posts: 1389
  • Gender: Male
  • Location: NWA
Re: no idle?
« Reply #5 on: October 02, 2012, 08:00:41 am »
Set the idle screw (thumb screw with spring)so that the slide raises to about 2.5 to 3mm.

The more you screw your air/fuel mixture screw in the less air you get thus drowning (riching) your motor.  You need to move the screw out, not in, to lean the mixture.

Make sure your float height is correct and that you needle and seat arent worn.

Quote from: Frank on September 24, 2012, 01:38:16 am
Jess
Carb basic is checked,
Float lever and the jets are brand new.
its the same problem, my petcock is also brand new.
but when i left the quad for a week in my garage,
 i have a little fuel leak under my quad!


Replace the needle and seat.
Logged

Offline

  • Trade Count: (0)
  • Weekend Warrior
  • ****
  • Posts: 162
  • Gender: Male
  • who brakes later is more quickly
  • Location: Germany
Re: No Idle?
« Reply #6 on: October 07, 2012, 12:46:30 pm »
Ok
i have replaced needle and seat!
Have installed a 360 main and a 1,50 pilot
clip is on the upper notch.
i start the engine with choke today,
At maybe 100 kmh i pull the clutch and off trottle at the same time,
The engine turns up suddently.
Is the same when i try, and try, opens the exhast valve too early?
Or also an air leake?
Logged
under-steers is when you see the tree the goes in. overrides is when you hear the tree which you were going on.
"Walther Röhrl "

Offline

  • Trade Count: (0)
  • Green Horn
  • ***
  • Posts: 67
  • Gender: Male
  • Location: Iowa
Re: No Idle?
« Reply #7 on: October 07, 2012, 02:45:50 pm »
Did you clean out the carb body good even if the jet is clear their could be something up in a passage way in the body of the carb
Logged
86 GSXR 1100
87 LT500
88 Banshee
88 GSXR 1428
89 GSXR 7-11
90 GSXR 750
07 RMZ 250 A/F 2 STROKE!!!
08 RMZ 450

Offline

  • Trade Count: (0)
  • Weekend Warrior
  • ****
  • Posts: 162
  • Gender: Male
  • who brakes later is more quickly
  • Location: Germany
Re: No Idle?
« Reply #8 on: October 08, 2012, 01:40:38 pm »
Ok thanks
i pull out all jets and things off the carb,
I have cleant all out,and pull it together.
Start the engine, have idle and runs good,
In the next time i think i use better my brain !
Hehe.
thanks all.
Frank
Logged
under-steers is when you see the tree the goes in. overrides is when you hear the tree which you were going on.
"Walther Röhrl "

Offline

  • Mitch Keller
  • Trade Count: (0)
  • Administrator
  • Trail Blazer
  • *****
  • Posts: 799
  • Love The Smell Of 927 and Race Fuel In The Morning
  • Location: Riverside Ca
Re: No Idle?
« Reply #9 on: October 08, 2012, 02:03:15 pm »
Thats great news Frank!
Logged
F Mitch Keller
Pages: [1]   Go Up
« previous next »
 

+- Suzuki Quadracer HQ Store Zone

http://www.suzukiquadracerhq.com/index.php?action=store