[DR. GIX]

I have a Y2K GSX-R 600 with a Hidle bolt on. I bought a Dyno Jet kit and K&N airfilter. I just took it to a local shop to have it jetted on the dyno.
When i picked it up and took it for a ride it stalled on me three time and was running really sh..ty from 1- 3000 rpm. The mechanic fiddeled with the pilots and ended up putting the stock ones back in without any good results... What im left with now is a bad boog/ stuble from 1-3000rpm... He said he going to order different pilot jets and see if that helps!! Does anyone have any suggestions or input????
He also said he didn't notice the pronblem the night before!

... It does runn better on the top end.

Oh one more thing I said I shouldn't the K&N!

 

[Ratman69]

Sounds to me like you need a new mechanic.

If the stumble wasn't there before, and it was there even after he put the original jets back in, it means he didn't do something right.

If he knows what he is doing, he should be able to find the right size jets to make it run properly with the new pipe and the K&N. the fact that he said the k&n is bad makes me think that he has never been able to tune properly for one, so he thinks it is the problem.

Take it back to him and tell him to do a better job, or find a better place to get it done. Ideally, it should be done on a dyno.

 

[DR. GIX]

Your definatly right Ratman69, the bottopm end problem wasn't there before.
I asked him if does a dyno tune and said yes.. But I only got one chart from him and I don't think he even used the dyno to tune it.. He kept saying its something with the jet kit.. and He may have to put to the old jets back in??? I just don't understand... I posted this so I could go back top him with some suggestions.. so when he orders different jets and says something like "these bikes are tricky youll never get them running good throughout the rev range".
Shouldn't the pilot jets work from my Dyno jet kit?... frustrating as hell man.. feels like a threw my money away!

 

[GSXR-Freak]

Sounds like the carbs need to be synced as well... Does it idle smooth?

John

 

[DR. GIX]

Originally posted by GSXR-Freak:
Sounds like the carbs need to be synced as well... Does it idle smooth?

John

<font size="2" face="Verdana, Arial">It Idles smooth, The bike only hass 8,000 KM on it. Its definatly running rich if I lett it idle for a bit the plugs get fouled up and have to rev er up to clean it out.
Im not too familiar with jetting but does the tunning of the top end mess with the bottom end? The Bike ran good at the bottom end before I got it jetted. I was just getting a shudder/bogg at around 4,000 - 6,000 RPM

 

[1Kdude]

I agree,

0-talk to dyno jet directly and describe the problem to them,(including what the mechanic said) they should help you by standing behind their product.
1-Your 'mechanic' should not have given you the bike like that, make him fix it. If they don't, there is the better business bureau and let Dyno jet know what is going on.
2-The shop should let you watch while it is run on the dyno, mine does.
3-If they are careful and thorough, (which they probably are not) they should have drilled out the plugs over the air screws (if you have those plugs in Canada) and put them somewhere around 3.5 turns out, verified the float height on each carb, (7 or 8mm I think) and synched the carbs. I think the factory kit uses the stock pilot jets.
So it runs well 3krpm-redline? good luck

 

[DR. GIX]

So it runs well 3krpm-redline?[/QB][/QUOTE]

Thanks for the input!!!
It runs well from 5rpm to redline.... after I get over the huff and hum from 1- 3k.... Im going to take it for another run and see how it is!

 

[Chase]

mine was jetted with a full system and from 1-3k it just sucks..no power at all..and accelration jumps and bogs..kinda annoying.

 

[DR. GIX]

Originally posted by Chase:
mine was jetted with a full system and from 1-3k it just sucks..no power at all..and accelration jumps and bogs..kinda annoying.

<font size="2" face="Verdana, Arial">That shouldn't be the case in my opinion! Did you just recently get it jetted? I understand the bike not going to be a rocket from 1-3rpm and the bike won't run perfect but it should not have crazy bogs in the rev range. Which I hope my problem will be solved when i bring back to the shop next week!

 

[DR. GIX]

Originally posted by GSXR Drew:
Wonder if he raised your float bowls and is flooding the engine...Is the bike real hard to start when its warm?

<font size="2" face="Verdana, Arial">No its not hard to start when its warm. The odd day it will run Ok from 1-3rpm but the later it the day or if its it humid it will run rough!

 

[GSXR Drew]

I would still suspect that the float bowls may be letting in to much fuel. Try dropping them by 1mm to see if that cleans it up. The other thing that could be messing with your bike at such a low rpm is the mixture screws. Have you bothered to check to see what your spark plugs look like after running in that rev range? If they are black and sooty, possibly wet...then your running way to rich in that area. You want them to look nice and tan colored.

Check this website to help you determine whats going on...

http://www.factorypro.com/tech/carbtun.html

 

[GSXR Drew]

Wonder if he raised your float bowls and is flooding the engine...Is the bike real hard to start when its warm?

 

[DR. GIX]

I just got my bike from the mechanic and he put in larger Pilot jets. But Im still getting that damn bog/stumble/stall espescially with a passenger. arghhhhhhhh!!!!!

 

[audi1031]

Hey Dr. Gix I am having the same problem check this post http://www.gixxer.com/forums/ubb/ultimatebb.php?ubb=get_topic;f=7;t=001917

I am trying to find the cap that is suppose to be drilled out maybe that picture can help you as well.

 

[DR. GIX]

Just to give everyone an update on my 1-3k bog. I took it back for the 3rd time and this time the bog is not as bad but I have lost Mid-Range it doesn't pull as hard it feels de tuned. He dropped the float level and adjust the air fuel mixture along with going done a clip on the jets (Something like that). He also noticed oil in my airbox and say that my be part of the problem... he thinks it may be something else other than jetting. I am serious looking into getting a MJN jet kit but there out of stock until August.

Does anyone have a MJN installed with good results and no bog from 1-3k RPM?

I just am running out of time and patients

 

[GSXR-Freak]

Ok if he changed the clip, that would be the midrange and that doesnt start till past 4K RPM.. You should have him put the clip back.. If he lowered the floats that should help with the off idle as well as the air/fuel... But try and put the clip back. That should give you back your mid range..

John

 

[spongebob]

feck...............who turned you on to this mecheneck?? the only thing hes done right was to stear you clear of the k&n...

god only knows why you wanted a jet kit any way...look throught the posts here about guys crying the blues cause their bikes run like shit with a jet kit and a slip on....sounds like suzuki has it pretty close being stock huh??

 

[GSXR-Freak]

Originally posted by spongebob:
feck...............who turned you on to this mecheneck?? the only thing hes done right was to stear you clear of the k&n...

god only knows why you wanted a jet kit any way...look throught the posts here about guys crying the blues cause their bikes run like shit with a jet kit and a slip on....sounds like suzuki has it pretty close being stock huh??

<font size="2" face="Verdana, Arial">No I think that every bike is different.. I put a slipon on a friends 00 600 and it ran ok, but had a lot of flat spots in the mid range... We put a dyno jet jet kit (stage 1) and it ran much better. Still a SMALL flat spot on the 4K range, I told him to put in a shim and it seemed to go away... BTW He did have a K&N filter on the bike...

Also, there was a post (I think in the MODs fourm) from a guy that had a sniffer on his bike, on the dyno, with a stock and then with a K&N filter. With no other change the K&N made less power... BUT YOU WANT TO KNOW WHY??? It was cause (per teh sniffer) it made the bike run way to lean. Lean says that there was more air flow from the filter. Once you richen the bike up it would make more power..

John

 

[DR. GIX]

Yeah I'm going to take it back to get my Midrange back to what it was and see if he can get it better all through the rev range! (I think he's running out of ideas and doesn't want spend all this time on my bike free of charge....) I'm just fishing for ideas

I was reffered to him by a bunch of people who said hes good. He does race bikes and says he doesn't really here back about 1-3k RPM issues because race bike are always revvin it!

He said he drop a clip on the jetts to get the bottom end better so I'm in a catch 22 if I get the mid-range back I loose the bottom end arghhh (so he thinks).. F..ck!!! and he said this time around it ran better with the K&N... I dunno anymore.. maybe just put back the stock needles instead of dropping $500 canadian for MJN KIT plus the install!!!

Thanks for the Replies!

 

[spongebob]

im getting a very clear picture here...add a k&n filter and go nuts trying to adjust the flat spots out..fuck the k&n...and there advertisment of up to 20 horsepower increase...wouldnt you like to know what the fect got 20 horsepower from just a filter change??? i bet k&n will never tell.. wish i was a millionaire, id take em to task on this..