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Hey guys, I need help. This is going to be a long post, I want to make sure I give all the details.
I have a 96 GSXR 750T with 7k miles on it. The bike is jetted and has a Yosh. RS-3 pipe. It is kept covered and under a carport throughout the year.
I bought it September of 2001 and it was running and sounding great for the first 3 months. For those 3 months, I was riding it at least once every week with no problems. Then we had our first cold streak and I didn’t ride it for about 3 weeks. After the three cold weeks I went out and started my bike, right off the bat I noticed it didn’t sound as loud as it normally did. I figured it was just cold and I would let it warm up. I did this and then went for a short 10 mile ride. The bike ran like shit, it was sort of sputtering off the like and up to about 6krpm then would take off like crazy. If I kept it above 6krmp it would run like a rocket, but was really jumpy and not predictable at all. I parked the bike and the next week I took it to a local place called Hinshaw’s Suzuki. I explained to the guy at the counter my issues and he said it sounds like I need my Valves Adjusted, and that I mite as well get a tune up while I was there. I said go for it. I picked it up 1 week later and the guy said that the bike is running fine now, I pay my bill of $460.02, and they pull it up and I start it. It sounded the same, it didn’t sound like they fixed anything. I told him that the problem was still there and he agreed to have the tech look at it. So I leave the bike and come back the next day. He said the tech went over it again and took it for a ride and said its “running great”. They pull the bike up and I had the tech start it. It still had that quieter sound to it. I ask him what’s with that and he says that’s how Gixxers are. At this point I was done dealing with them and took my bike home. 5 minutes in to my ride home it started that sputtering again. I’m pissed off and take it home and let it sit for a week before looking at it again. After looking through the manual and talking to my buddy with a bike, I decided to change the air filter. I went and got a K&N and put it in. Still no difference in the sputtering. I decided to take it to a different shop 50 miles away called Aurora Suzuki, I told them the story thus far. He said let them dig in and then give me a call with what they find. He calls me a few days later and says that a carb clean and rejett for the Yosh. RS-3 pipe and K&N filter should do the job. I had them do the work and when I came to pick it up it was late and he said the tech said it was “running great”. I hop on and it still has the same sound. But seemed to ride fine. So I head home. 5 minutes in to it same sputtering is there again. I call the shop the next day and he had me bring it back in (50 miles each way). I did this the following week and left it with him for 2 weeks. He called me and said that he thinks they fixed it. He said that he thinks it was a grounding problem and that it’s running good now. When I go pick it up I start it and ride it around for 5 or so minutes and the problem is still there so I then take it back to the shop so he could hear what I’m talking about. He was like WOW, I see what you mean. So I left it again with them. A week later I check in with him and he said that he had a tech on it for 5 hours so far and is still checking it out. Then I get a call 5 days after that and he said that the bike is back together and is running fine now and he thinks that it could have been an electrical thing. They day I went to pick it up he (the service manager) was off. I picked it up and just head home, and 5 minutes in to it the same problem. So at this point I am about ready to ride my bike off a cliff. I decided I would try a different fuel, so I start using race fuel (114 octane) in hopes of it running better. This helped a little bit, it would stop sputtering at around 5krpm instead of the 6krpm. But still I have this problem!!!
So in short, it runs hot, around 210-230 in the city, 174-190 when im constantly moving. Its not smooth/it sputters/bogs down from idle to about 5krpm no matter what gear im in. It sounds quieter than normal. It seems to run better when it’s cold out. The choke is acting funny. If I open it all the way it acts like the choke is off, But if I close it a little after its open all the way it acts fine. And it seems to be really sticky, it’s not smooth it either open or shut.
It’s killing me that I cant seem to get this thing running right. PLEASE HELP!!!
Sorry so long.
 

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first things first....its not running hot. sounds about average to me. secondly, i feel for you - sounds like the nonsense i wen thru. try to not let it get to you too much. it will work in the end. okay, enuf of that. you need to get some experienced and honest help and this is the place. I hope gsxr freak john gets a hold of this - i trust his response. also jeff the moderator is the man. try sending them a pm of this exactly if u dont hear from them soon. im not of any help other than that. best of luck - good things come to those who wait (and wait and wait and wait and wait and wait.......)
 

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hey you may have rust in tank take tank off clean it try and slip hand in if possible clean top the if you can remove fuel pump from bottom and clean it then take hand and rub in there use karosene then rinse then put pump on full gas shake round then empty then fill it up ride check
 

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jeff and GSXR-Freak are definitely your men here, they'll be able to give you a lot of really good advice.

In the meantime, here's my 2 cents for what they're worth. If the bike goes like crazy above 6K, and lousy below, you could well have some problem in your carbs in the needle jet/emulsion tube area. Seeing as it happened only after a layover, it is more than likely dirt than any kind of wear.
 

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couple mistakes..going to a dealer for service.
and a k&n filter(my opinion)..dOOd id find a motorcycle specialty shop that does tuning and has a dyno...you may have to have your carbs gone through..floats setting is VERY important..
 

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HEY SPONGEYBOB-

i have a k&n filter and heres the fix for it. cleanse the unit with a non-amonia-based cleaner - (dish soap) and let it dry or GENTLY use forced air - not @ high pressure though....next spray with a degreaser and repeat the above. At this point you've removed all the oil from the gauze. Simply replace it once dry and dont re-oil.
The gauze is more than enuf to stop the particles of debris- look at the bmc filter - it has only one layer of gauze compared to the k&n filter of two layers. This is a secret used by many from back in the day to squeeze a little more out of the bike while still being safe.

Thats my 2 centavos on it and mine SEEMS to be jus dandy.
 

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Would a dirty fuel filter or soon to be bad fuel pump cause the bike to sputter? Also, check the float settings on the carbs and possibly spray some WD-40 on the carbs and the fast idle lever.

Outlaw
 

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Would a dirty fuel filter or soon to be bad fuel pump cause the bike to sputter? Also, check the float settings on the carbs and possibly spray some WD-40 on the carbs and the fast idle lever since you mentioned it was a difficult to move.

Outlaw
 

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Discussion Starter · #9 ·
Good lookin out!! Thanks for all the info guys. Im gonna be looking in to all that was brought up until I get this thing fixed. I will let you know what I find.
If anyone else (Jeff or GSXR-Freak) has any other input im listening.
 

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dude, my bike does the same thing thing everytime i let it sit for 2 or 3 weeks and it rains, all ya got to do is replace the spark plugs, i promise, itll fix the problem>
jetjock16
 

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Sorry it has taken me so long to read this... I have not been at work all week due to training... So I have not had the extra time to play on here.. lol

Anyhow.. I have to agree it sounds like the plugs might have a problem... Get a good set of plugs... cr9ek i think it is... lol Dual grounded plugs...


Also, This is going to sound very strange, but if you live in a area were there are a lot of rats or things of the likes, you might want to check your pipe for a nest... You might laugh, but if the bike sounds different, then there might be something in there and they may have been looking for someplace warm...

Other then that you said they jetted the bike so I doubt that would be the problem.. but the floats might not be set correct... This would cause the bike to idle crappy, not run for shnits when you first take off.

I wouldnt think it would be a fuel pump cause normaly with a fuel pump going out you dont run good at high rpm (or whrn you give the bike a lot of gas) since it can not feed the carbs with enough gas.

Anything else you are more then welcome to PM me.

John
 

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sounds similar to the bother i was having with mine a while back.
after pissing around for ages trying little things i really couldn't be arsed any more and got a set of second hand carbs for £50, dropped em in and now the bike runs fine. whether it was the jet kit or the old carbs i dunno but the problem has gone now
 
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