is this normal?

[Josh_kcco]

so sorry for making new threads all the time. =/

i have a 2004 ninja 250r. it has 2600 miles in it the only mod i had is a 15 tooth front sprocket. (this problem below has been there before this mod). Its been serviced completely since it was sitting for 8 years covered in a storage.. im not sure if the carbs have been cleaned by the previous owner just guessing they where when it got serviced.
My question is, when im in 6th gear and i twist the throttle all the way down to where it stops, it feels as if the bike it bogging out, feels as if its getting sluggish. but when i release the throttle little bit from the stopping point (like barley twist my wrist up) it picks up and i can feel the power as its gaining speed. IS THIS NORMAL? or is it dues to dirty carbs.

i hope i explained this good enough.

[alex.s]

maybe dirty carbs, maybe dirty air filter, maybe just bad jetting. it may have had different exhaust on it but the PO put the stock exhaust back on without putting stock jets back.

you really can't trust someone when they say full service completed. 9/10 times its bullshit. check all your fluids, clearances, and clean your intake filter and carbs

[csmith12]

^^^^ what he said

Not normal. After you do the easy stuff, check for shims on the carb.

[Josh_kcco]

Originally Posted by alex.s

maybe dirty carbs, maybe dirty air filter, maybe just bad jetting. it may have had different exhaust on it but the PO put the stock exhaust back on without putting stock jets back.

you really can't trust someone when they say full service completed. 9/10 times its bullshit. check all your fluids, clearances, and clean your intake filter and carbs

it does have the stock exhaust on it. and the valves and with in spec.
ill check the air filter and look into the cleaning the carbs. i dont wanna pay the stealership for this. so ill be doing it myself.

[alex.s]

Originally Posted by Josh_kcco

and the valves and with in spec.

you checked them yourself?

[Motofool]

Originally Posted by Josh_kcco

so sorry for making new threads all the time. =/
..........
My question is, when im in 6th gear and i twist the throttle all the way down to where it stops, it feels as if the bike it bogging out..........

No need to be sorry; we love questions.

Your pre-gen looks like new; hence, she maybe fully stock.



What happens is that the engine is receiving too much air suddenly, because the internal mechanisms that the carburetors have to compensate for your input are not working properly.

Rather than doing surgery now, I would continue rolling the bike as is.
The more gasoline goes through the carbs and engine, the better for this baby to come back to life.

Besides giving gas more progressively, as you should, one way to reduce that problem is to keep the engine above 8,000 rpm.

If the problem persists after 1000 more miles, then it may be time for a full carb cleaning.

[quarterliter]

I would guess it's a carb issue. It might not have the stock main in it either. If I were you I would take the carbs off and see if anything is shimmed, or the jets have been changed.

[quarterliter]

Stock main is 105

[Josh_kcco]

Originally Posted by alex.s

you checked them yourself?

no I just had them check 5 days ago when I got the cam tensioner replaced. it was ticking really loud so I took it in to get looked at.

[Alex]

Where did you take it in Kern? I know someone who runs a great shop in that area if you are looking for someone trusted to peek at the carbs.

[Josh_kcco]

Originally Posted by Alex

Where did you take it in Kern? I know someone who runs a great shop in that area if you are looking for someone trusted to peek at the carbs.

I took it to riders choice in Lancaster ca. Bit I'm open to take it else where, they are pretty pricey!

[Josh_kcco]

Originally Posted by Motofool

No need to be sorry; we love questions.

Your pre-gen looks like new; hence, she maybe fully stock.



What happens is that the engine is receiving too much air suddenly, because the internal mechanisms that the carburetors have to compensate for your input are not working properly.

Rather than doing surgery now, I would continue rolling the bike as is.
The more gasoline goes through the carbs and engine, the better for this baby to come back to life.




Besides giving gas more progressively, as you should, one way to reduce that problem is to keep the engine above 8,000 rpm.

If the problem persists after 1000 more miles, then it may be time for a full carb cleaning.

Yea it was in awesome condition when I bought. Looks show room new! I'll take your advice thanks man. It is fully stock besides the 15toothe sprocket I put on it.

[alex.s]

Originally Posted by quarterliter

Stock main is 105

is that true? i had no idea pregen carbs were set so rich. must have been before the ARB and al gore kicked in.

for newgen stock jets are #98/#38

[choneofakind]

Originally Posted by alex.s

is that true? i had no idea pregen carbs were set so rich. must have been before the ARB and al gore kicked in.

for newgen stock jets are #98/#38

Yepp, 105 mains, 38 pilots. I think the different air box and different cam profile and different ignition timing (42 degrees vs 35) has something to do with it. Our stock mid-range also wasn't nearly as neutered as the newgens are with their super lean needles.

I think even with a pod filter and full exhaust, I'm on 110 mains? idk. I'll have to go check. Thanks for the reminder.

[Josh_kcco]

Originally Posted by Motofool

No need to be sorry; we love questions.

Your pre-gen looks like new; hence, she maybe fully stock.



What happens is that the engine is receiving too much air suddenly, because the internal mechanisms that the carburetors have to compensate for your input are not working properly.

Rather than doing surgery now, I would continue rolling the bike as is.
The more gasoline goes through the carbs and engine, the better for this baby to come back to life.

Besides giving gas more progressively, as you should, one way to reduce that problem is to keep the engine above 8,000 rpm.

If the problem persists after 1000 more miles, then it may be time for a full carb cleaning.

What if I run "Seafoam" threw it, would it help at all?

[jkv45]

Originally Posted by Josh_kcco

What if I run "Seafoam" threw it, would it help at all?

Might, but not if there's anything major going on.

I personally like Chevron Techron Concentrate at 1oz per gal better than Seafoam.

[Motofool]

Originally Posted by Josh_kcco

What if I run "Seafoam" threw it, would it help at all?

Yes, Seafoam has helped me delay disassemble-cleaning work, .......... or so I believe.

Daily rides have no substitute.

[Ish]

Originally Posted by Josh_kcco

so sorry for making new threads all the time. =/

i have a 2004 ninja 250r. it has 2600 miles in it the only mod i had is a 15 tooth front sprocket. (this problem below has been there before this mod). Its been serviced completely since it was sitting for 8 years covered in a storage.. im not sure if the carbs have been cleaned by the previous owner just guessing they where when it got serviced.
My question is, when im in 6th gear and i twist the throttle all the way down to where it stops, it feels as if the bike it bogging out, feels as if its getting sluggish. but when i release the throttle little bit from the stopping point (like barley twist my wrist up) it picks up and i can feel the power as its gaining speed. IS THIS NORMAL? or is it dues to dirty carbs.

i hope i explained this good enough.

You have a really nice looking bike!

my dirt bike did the same thing and it was a jetting issue

[Josh_kcco]

Originally Posted by Ish

You have a really nice looking bike!

my dirt bike did the same thing and it was a jetting issue

Thanks man!!

I was maybe going to run seafoam or something along that nature threw it to see if it helps before I operate! lol

[Ish]

Originally Posted by Josh_kcco

Thanks man!!

I was maybe going to run seafoam or something along that nature threw it to see if it helps before I operate! lol

if it ain't broke don't fix it :P

[Josh_kcco]

Originally Posted by Ish

if it ain't broke don't fix it :P

true, true!!!!1 =]

[kirk595x]

I'm a firm believer in Seafoam. I've ran it through every used vehicle I've had with good results. Also try "Startron" as a routine treatment...helps with the Ethanol in our Cali Fuel. If the bike is gonna sit for more than a few days then definitely have one of those treatments ran through the fuel system before non-op.