ok so i began having problems with my bike jumping out of second gear last week. I took it to the shop where they were going to replace the clutch to see if that would correct. it didn't. I have since determined that its the shift fork and/or gear dogs. that sucks. anyway, while it was in there, i had them check the valves and timing chain. he said they were both good and under specs. but now my bike runs like crap. it sounds different than it ever has and it has no power up to 5k rpms. i've got 16k miles on it and have had conintuous performance out of ever since i originally bought it. the mech says it's nothing that he did. says i need to get a power commander to correct the problem. why would i need to do that? i've never needed one up till now. anybody got any advice to offer? i think he's getting thrown off by an error code from the exhaust servo. i've got a muzzys on there. there was a servo limiter to keep the FI light from coming on, but the servo gave out about 6 months ago and the light came on. no decrease in performance though. thanks in advance for any help.
Sounds like he fucked with the timing or just fucked it up. Maybe a tooth off on the chain or something. No reason you should all of the sudden require a power commander. The mechanic sounds like he is either an idiot or is trying to get you to spend $ on something you don't really need.
yep. i think he fucked with the timing too. i had dropped the bike off that morning and when he cranked her up later that day he heard it ticking a little and called me and said the valves and timing needed to be adjusted. i knew it was time so i said go ahead. i think he tightened the timing chain too much to get the ticking out. isn't there supposed to be a little ticking? he's saying its the computer settings... as i understand it, if i put a pc on there, can't we fuck with the timing electronically and get it back right again? i just want my bike back. i want to ride.
Well, except for jumping out of gear on you, the bike was running fine before you took it into the shop from what you posted above. There is no reason that after a valve adjustment the bike should be running worse and suddenly need a power commander installed. The 636 ticks, its pretty normal and usually nothing to worry about. You should find out exactly what he did and why he thought he needed to do so. And make him fix it WITHOUT buying a power commander or take it somewhere else. Trying to fix improperly set timing by adding a power commander is not going to fix the improperly set timing, its just going to either make it worse or be a band-aid to the real problem which is that he screwed up on the timing in the first place. I would talk to the manager if the mechanic keeps giving you shit and take it elsewhere if the shop refuses to admit fault.
Location: Montreal Canada Eh 06 ZX-6R ~ 08 GSXR-1000
What timing did your so called "mechanic" adjust? Was it your valve timing? Or ignition timing? I assume it's the valve timing because he has no way of adjusting ignition timing without an add on. There is absolutely no reason to change the valve/cam timing what so ever unless it jumped a tooth but that is highly unlikely. If he did change the position of the cams than I really think you need to bring this to somebody who knows what their doing. Just the fact that he replaced the clutch and can't tell the difference between clutch slipping and tranny jumping out of gear speaks volumes.
Sorry but I think this guy isn't worthy of touching your bike.
DUDE, when he put the cams back in he didnt put them back as they were previously.(timing is now off)
Had this happen with my bike and wont get into to much but, TO degree the cams on our bikes you need to drop the motor, dont listen to anyone who says they can effectively do it while the motor is in the frame.
ok i talked to him (the shop manager) yesterday, and he says they didn't even have to adjust the valve clearances, they were all within specs. the mech insists that he only took the valve cover off, not the cam chain. he did say that he checked the chain to make sure it had the right amount of tension, and it did. not sure how he did this as i can't find any specs for cam chain tension in the manual. he said sometimes they end up putting on a manual chain tensioner, but did not have to on mine.
maybe when the mechaninc test drove it (i witnessed him giving it hell) and it jumped out of second gear, it revved up too quickly and some valve bounce occured, damaging one or more valves...
also, he showed me the dyno charts which show it running lean, especially up to 5k rpms. he thinks this is causing poor performance. i'm running a muzzys (w no exhaust valve) and a k&n filter. but that's the same setup i've had the whole time. he swears the pc will fix everything (cept the trans problem). i guess we'll see... he's already ordered one which should be in today. whether i agree to pay for it is a different story.
as for the clutch, he told me that it was probly the trans (gear dogs and/or shift forks) before he ever changed the clutch. the clutch was worn and needed replacing, so we tried that first hoping that it would correct.
yeah when first went to pick it up after having the clutch done, they told me "good news, we fixed it, it was just the clutch." so when i left the place i got on it in 2nd and she jumped out. that's when i took it back and they test drove it, so they were just checking out the clutch. it sounded and fine when i drove it that first time. then the mech got on it and gave it hell in 2nd. it jumped out and sounded pretty close to hitting the rev stop. anyway, they were about to close for the weekend and i wanted my bike... when i finally left was when i noticed it sounding and feeling different. so maybe it wasn't there work but the test drive. i don't know... at this point i don't care what it takes to get her fixed. i miss her. i probly woulda wound up putting a pc on there one day anyway. we'll see if it does "magically fix it".
and i can't wait to tackle the tranny job this winter.