p650 hesitation

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p650 hesitation

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p650 hesitation - 9/26/2007 7:48:50 PM

RideRed4x4

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From: Ohio/WNY
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When I pin the throttle from the beginning it stutters/hesitates for a couple seconds then goes like a rocket. If i apply the throttle under normal use it's fine. I heard from a buddy that it's prob the clutch, is this right? I thought maybe the carbs need work/adjusted. Any help would be great! Thanks

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K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
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98 SPORTSMAN 500 EBS (Broken)
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Post #: 1

RE: p650 hesitation - 9/27/2007 6:12:31 AM

VTPrairie

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From: Swanton Vt
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idle mixture screws I had the same problem adjust them when the machine is warm it will take a while as they are a pain doing 2 carbs start with the back one then do the front from what I understand the back carb is going to need more fuel because it runs hotter

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Post #: 2

RE: p650 hesitation - 9/27/2007 12:14:04 PM

justin99

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From: Terre Haute, IN
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I agree with adjusting the idle screw mixture. If they are out of whack the throttle response is crap.

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Post #: 3

RE: p650 hesitation - 9/27/2007 12:32:37 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
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what do I need to take off to have the carbs in an easy position to work on?

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

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Post #: 4

RE: p650 hesitation - 9/27/2007 1:04:32 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
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And where is this screw located on the carb underneath? Any pics?

Thanks

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to RideRed4x4)

Post #: 5

RE: p650 hesitation - 10/1/2007 6:38:54 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
Status: offline

Anyone?

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to RideRed4x4)

Post #: 6

RE: p650 hesitation - 10/2/2007 8:34:12 AM

TexasMudderBF650

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From: Huffman, TX
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the air/fuel mixture screws are located on the right side of the bike look above the belt cover at the carbs you'll see a brass flat head screw theres one on each carb they are easy to get to. I would first try richening them to see if it runs better to richen the mixture turn them both a alittle under a quarter of a turn counterclockwise. always move them is small movements and turn them the same amount. if it gets worse then try leaning it by turning them clockwise. when you make the adjustments you'll need to run it for a little bit to notice any differences.

< Message edited by TexasMudderBF650 -- 10/2/2007 8:49:11 AM >

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2005 BRUTE FORCE 650 SRA
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Post #: 7

RE: p650 hesitation - 10/2/2007 12:28:27 PM

RideRed4x4

Posts: 532
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From: Ohio/WNY
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Ok thanks!

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to TexasMudderBF650)

Post #: 8

RE: p650 hesitation - 10/3/2007 1:00:08 PM

RideRed4x4

Posts: 532
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From: Ohio/WNY
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Hey, any quick pics of where they are for a reference? Just an idea. Thanks

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to RideRed4x4)

Post #: 9

RE: p650 hesitation - 10/3/2007 1:52:12 PM

TexasMudderBF650

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heres a post that was put up awhile back that I put a picture up of the location

http://www.highlifter.com/forum/Wheres_the_mixture_screw/m_1775810/tm.htm

_____________________________

2008 POLARIS SPORTSMAN 800 H.O.
3 inch lift, extreme products 1 1/2 spacers, 29.5 outlaws 10 front 12's back, stealth snorkels, 880 6000k H.I.D headlights

2005 BRUTE FORCE 650 SRA
29.5 Outlaws 10 front 12's back, EPI red secondary/ pink primary, Highlifter 2" lift, HMF exhaust S/O, dynatek cdi, Whelen strobes, k&n air filter, HL High capacity springs,

http://community.webshots.com/user/jcg4825
www.myspace.com/texasmudder

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Post #: 10

RE: p650 hesitation - 10/3/2007 3:33:42 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
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Thanks Texas!

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to TexasMudderBF650)

Post #: 11

RE: p650 hesitation - 10/4/2007 9:12:14 AM

TexasMudderBF650

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From: Huffman, TX
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_____________________________

2008 POLARIS SPORTSMAN 800 H.O.
3 inch lift, extreme products 1 1/2 spacers, 29.5 outlaws 10 front 12's back, stealth snorkels, 880 6000k H.I.D headlights

2005 BRUTE FORCE 650 SRA
29.5 Outlaws 10 front 12's back, EPI red secondary/ pink primary, Highlifter 2" lift, HMF exhaust S/O, dynatek cdi, Whelen strobes, k&n air filter, HL High capacity springs,

http://community.webshots.com/user/jcg4825
www.myspace.com/texasmudder

(in reply to RideRed4x4)

Post #: 12

RE: p650 hesitation - 10/4/2007 4:27:19 PM

Saw Doctor

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From: Saskatchewan,Canada
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quote:

ORIGINAL: RideRed4x4

When I pin the throttle from the beginning it stutters/hesitates for a couple seconds then goes like a rocket. If i apply the throttle under normal use it's fine. I heard from a buddy that it's prob the clutch, is this right? I thought maybe the carbs need work/adjusted. Any help would be great! Thanks

It's probably the say the carb needs some adjustment as well but i'd put some new plugs in it before i adjusted the carb to eliminate that possibility.Keep track of where your stock air fuel settings are in case it's not the carb or plugs.It could be the valves out of spec and it would be handy to know the stock carb setting after the valves are properly adjusted.Good luck

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Post #: 13

RE: p650 hesitation - 10/4/2007 4:36:19 PM

BruteSkeg750

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if you need a service manual, you can download on hear

http://****/index.php?option=com_remository&Itemid=36&func=select&id=7

kinggrizz or somethin like that posted this link lats week

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Post #: 14

RE: p650 hesitation - 10/4/2007 6:22:08 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
Status: offline

Thanks but that link isnt working

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

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Post #: 15

RE: p650 hesitation - 10/6/2007 2:16:17 PM

stumper1300

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Joined: 3/31/2006
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My 07 SRA 650 has the adjustment screws capped. Is it a big deal to drill them? Can I just get a long bit on a cordless and drill them out?Thanks

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Post #: 16

RE: p650 hesitation - 10/7/2007 10:23:17 PM

michaelb

Posts: 281
Joined: 9/19/2007
Status: offline

i have tyhe same problem on my brute and i took it in to get worked on and they said the same thing that it was the mixture... it does it really bad when its cold just take it in theyll have it done in a day

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Post #: 17

RE: p650 hesitation - 2/10/2008 7:22:07 PM

RideRed4x4

Posts: 532
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From: Ohio/WNY
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I never meesed with the screws yet but how do I know which way I need to adjust? Just do trial and error?

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to michaelb)

Post #: 18

RE: p650 hesitation - 8/25/2008 7:45:25 PM

RideRed4x4

Posts: 532
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From: Ohio/WNY
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UPDATE: I did tool with the adjusting screws on the carb (but not much) and it made a little difference but the hesitation is still very much there. Should I adjust them another way, try something else or send it in to the shop? Would a jet kit fix it? Just a NOTE when it is under load i need to move the choke a bit for maximum power. Dunno... Thanks

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to RideRed4x4)

Post #: 19

RE: p650 hesitation - 8/26/2008 3:16:47 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
Status: offline

Nothing?

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to RideRed4x4)

Post #: 20

RE: p650 hesitation - 8/26/2008 3:23:11 PM

devildog12210

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From: Drummonds, TN
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Sounds like your running pretty lean if you have to choke it to make power. It isn't getting enough fuel. You may not have adjusted the a/f enough.

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(in reply to RideRed4x4)

Post #: 21

RE: p650 hesitation - 8/26/2008 3:29:46 PM

TexasMudderBF650

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Joined: 2/24/2006
From: Huffman, TX
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if its running better when you choke it then you need to richen the needles try a quarter turn counter clockwise on both air/fuel mixture screws

_____________________________

2008 POLARIS SPORTSMAN 800 H.O.
3 inch lift, extreme products 1 1/2 spacers, 29.5 outlaws 10 front 12's back, stealth snorkels, 880 6000k H.I.D headlights

2005 BRUTE FORCE 650 SRA
29.5 Outlaws 10 front 12's back, EPI red secondary/ pink primary, Highlifter 2" lift, HMF exhaust S/O, dynatek cdi, Whelen strobes, k&n air filter, HL High capacity springs,

http://community.webshots.com/user/jcg4825
www.myspace.com/texasmudder

(in reply to RideRed4x4)

Post #: 22

RE: p650 hesitation - 8/26/2008 5:15:59 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
Status: offline

k I will give it another go thanks!

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to TexasMudderBF650)

Post #: 23

RE: p650 hesitation - 8/26/2008 5:35:13 PM

VTPrairie

Posts: 100
Joined: 4/6/2003
From: Swanton Vt
Status: offline

you have to adjust the screws with the engine warmed up as well I am about 3.5 turns on my p650

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Post #: 24

RE: p650 hesitation - 9/1/2008 6:18:11 PM

RideRed4x4

Posts: 532
Joined: 5/1/2000
From: Ohio/WNY
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9-1-08 UPDATE* Ok I did mess with them, I had them all the way in (clockwise) and then adjust them out (counter) I dont think i had them 3.5 turns but they were out enough to make it stall and idle low. So I turn them back in a bit and and it responds alot better but still hesitates when pinning the throttle. Any other ideas? Should I just turn them counter clock wise until the idle gets pretty low then just turn the idle screw up and try it? I didn't get that far cause we were riding theat afternoon. Thanks for anymore info.

_____________________________

00 RANCHER 350 4X4 ES
Warn 424
25" Kenda Bearclaws
Moose hand guards
K&N air filter
Progressive rear shock

02 PRAIRIE 650
25" Swamp Witches
ITP C-series type 7 wheels (Black)
Twin Air filter
Moose power module
Power Madd hand guards

98 SPORTSMAN 500 EBS (Broken)
Maier hand guards
K&N air filter

06 Nissan Frontier Crew Cab 4x4 6-speed

#3 Member of Team Rancher

(in reply to VTPrairie)

Post #: 25

RE: p650 hesitation - 9/1/2008 10:12:42 PM

brokenridermn

Posts: 19
Joined: 3/27/2008
Status: offline

If you flip your seat over it has the air/fuel mixture ratio on a sticker. Mine says 2 1/4 turns out both front and back. If you still have a problem after that take your stock cdi and put it back in to rule out your Moose power module. Also how long have you been running the twin air filter and power module? When I put in my dynatek the directions said I might need a jet kit.

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Post #: 26

RE: p650 hesitation - 9/10/2008 6:05:48 PM

wslongboard

Posts: 22
Joined: 6/30/2008
Status: online

did you happen to figure it out? mine is doing the same thing.

(in reply to brokenridermn)

Post #: 27