Please help! This is my first Sportbike!!!!
#1
Please help! This is my first Sportbike!!!!
Here is my problem. I bought a 99 SH from the Honda shop with the CCTs bad. Well it bent and broke a rear valve. Yesterday I put in the head, done the timing and everything went together smooth. It purrs like a kitten until you hit 6-7000 rpms then it wants to cut out. I can shift into another gear and it quits. This is my first sportbike and I am doing the work myself. What could this be? Any help would be appreciated!
#3
I bought a head from someone who's CCTs went bad in the front. He sold me his rear head. I just installed it. Per the manual the timing is perfect. I have checked that so many times until I am going crazy.
#6
I hate to keep harping this issue.. but a vibrating kickstand switch will make the bike cut out like that.. when the kickstand is down, the bike wont run in gear (even with clutch pulled).. I've personally seen this as an issue.. the vibrations @ WOT or high rpms will cause the kickstand switch to turn on and off.. making the bike seem to studder.
#11
Yes, they are apes...Read up on them before I installed. I installed per a forum on here. It was very detailed. I realy don't think that is it but right now I have my laptop in the garage trying to diagnos. Any help would be appreciated.
#13
Try using the choke as a troubleshooting tool. Pull the choke out a little bit and ride the bike. If the condition gets either better or worse then it's most likely a carburetion problem - better and you're too lean, worse you're too rich.
Also, do a search on "PVLIR". This is pretty common.
Also, do a search on "PVLIR". This is pretty common.
#16
Okay so here it what I have found so far...... I fixed the choke position.....my error.... black smoke is now gone. Tried testing the throttle control sensor but I am not getting the correct readings....so I went back to the ICM and everything seems to be fine back there. Does this mean the TCS is bad. I am about at my wits end with this thing!!!!! After I fixed the choke I got it up to 9k RPM but had to gradually get there. Still cannot hammer down on the throttle or it starts breaking up sooner.
#17
If you think it's the TPS just diconnect it and ride it. The ECU will not include the sensor's lack of signal in the map, and the bike should run just fine.
Are you absolutely positive you don't have the vacuum line attached to the bottom of the petcock?
Are you absolutely positive you don't have the vacuum line attached to the bottom of the petcock?
#19
Greg, I did remove the TPS and yes it runs just fine....that is .... until you hit 7k rpm and the hard throttle and if not hard on the throttle you can baby it up to 9k rpm. And please forgive me but I am new at theis.... What is the PVLIR? As far as the gas tank goes all lines are hooked up correctly. The samll hose will only fit on the back one. Again thanks so much. This is the first project I have done like this.
#21
Yes, when I pulled the choke out it ran worse. The air filter seems fine. What else can I check? With the TPS out it runs but you still can't crack down on the throttle without it breaking up bad.
#22
Sounds like you might be running too rich. How about pulling the air filter and trying to ride it?
I'm inclined to suspect one or more coils are breaking up but if you're saying that this troubleshooting has resulted in inconsistent running conditions then it's probably not that.
Have you been into the carbs at all? It is the same at idle as it is under load (breaking up when opening throttle)?
I'm inclined to suspect one or more coils are breaking up but if you're saying that this troubleshooting has resulted in inconsistent running conditions then it's probably not that.
Have you been into the carbs at all? It is the same at idle as it is under load (breaking up when opening throttle)?
#23
Reba
PVLIR is "Petcock Vacuum Line Inadvertant Relocation"...I ran into the same problem this week after I had some bodywork done, tank repaired, etc. I assumed the guy who put the bike back together would know where the vacuum line is supposed to go, I was wrong. Beat myself up trying to figure out what was wrong with it. Looked throughout the forum and found that a bunch of folks had the same issue...vacuum line DOES NOT go on the nipple located on the bottom of the petcock, it goes in the rear of he petcock. Don't know if this solves your problem, but it's a start!
PVLIR is "Petcock Vacuum Line Inadvertant Relocation"...I ran into the same problem this week after I had some bodywork done, tank repaired, etc. I assumed the guy who put the bike back together would know where the vacuum line is supposed to go, I was wrong. Beat myself up trying to figure out what was wrong with it. Looked throughout the forum and found that a bunch of folks had the same issue...vacuum line DOES NOT go on the nipple located on the bottom of the petcock, it goes in the rear of he petcock. Don't know if this solves your problem, but it's a start!
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08-27-2009 11:44 AM