stock carb question

[jeffsyfm350x]

Ok I have the stock carb has been jetted and runs with no problems through out the power range! Its if I'm at a idle and I just go to pop the throttle it wants to cut out what would make it do that? Like I said it runs fine and dosent puff any smoke or pop and I looked to see if this question was asked and didnt see it so Id like you input please. Thanks!

 

[Lbswut]

Could have a small bit of something in one of the jets. Time to get out a copper wire and run it through the jets to make sure it's completely clean. It may be possible your main jet is either too large or small as well. Since I am guessing you are talking about WOT(Wide Open Throttle) while trying to wheelie. The WOT is your main jet, so your problem is probably there.

 

[jeffsyfm350x]

Could have a small bit of something in one of the jets. Time to get out a copper wire and run it through the jets to make sure it's completely clean. It may be possible your main jet is either too large or small as well. Since I am guessing you are talking about WOT(Wide Open Throttle) while trying to wheelie. The WOT is your main jet, so your problem is probably there.

Yea I think it might need a cleaning. If at a idle i hit the throttle it trys to die and if i let off and hit it again its fine.

 

[Lbswut]

Might want to check to make sure your carb boot is not leaking and sucking air into it as well. The extra air could cause it to bog out.

 

[lbjamm]

It's your accelerator pump. Do a search for pen spring and valve stem cap mod. That will fix it.

 

[alex456123]

Lower your carb needle i had the same problem.

 

[jeffsyfm350x]

It's your accelerator pump. Do a search for pen spring and valve stem cap mod. That will fix it.

Ok I found will do this tomorrow Im gonna use some else rather then a valve stem cap though will have to search the garage and check my bins and see what I can come up with or mod it a different way. Thanks guys!

 

[alex456123]

Valve stem cap is the best way to do it. It is the perfect thickness to fit between the acell pump and I don't think anything else will work ant better.

 

[88WarriorBoy]

maybe a machined cap to fit over the accel pump rod perfectley lol

 

[lbjamm]

Lower your carb needle i had the same problem.

Said it runs fine otherwise.

 

[alex456123]

So did mine but when I moved it down it fixed it.

 

[Gen1Pat]

When you move it down you are leaning it. That can make it exibit the problem he has. I think everyone has failed to ask one question... What does the plug look like for ALL 3 circuits.

 

[lbjamm]

You're on a plug kick lately. lol He said it runs good except when he stabs the throttle. We all know it's the AP.

 

[jeffsyfm350x]

When you move it down you are leaning it. That can make it exibit the problem he has. I think everyone has failed to ask one question... What does the plug look like for ALL 3 circuits.

I forgot to add that in its light brown and gray!

 

[jeffsyfm350x]

I bet its the play in the ap and change that spring out it will run the way its suppose to! Not going to play with the needle Ive already did that all when I jetted it so I know its not that like I said it runs perfect at all rpms and pulls hard all the way through its just the first burp of the throttle and like dies and hit the throttle again its right there.

 

[88WarriorBoy]

my money would be on the accelerator pump for the studder and it sounds like you are running alittle lean to begin with

 

[jeffsyfm350x]

my money would be on the accelerator pump for the studder and it sounds like you are running alittle lean to begin with

Why do you think its running lean? The plug should be light brown and light gray

 

[88WarriorBoy]

should be light brown to paper bag brown. There should be No grey on a plug that is jetted right

 

[jeffsyfm350x]

http://www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqread.asp

 

[88WarriorBoy]

we like to see a golden brown plug