AC 400 fis knock noise at idle
#1
AC 400 fis knock noise at idle
Hey! I have the AC 400 fis manual tran, it makes a knock while it is idling. The noise seems to be from the bottom of the engine, or there about, not sure what it is. Also I have noticed a chattering type of noise while riding, when I hit the throttle to speed up. I only notice this until the rpm's of the engine are reved a bit, sorry no tac to get actual rpm's.
Can anyone tell me what this is and should I worry about it.
Can anyone tell me what this is and should I worry about it.
#4
AC 400 fis knock noise at idle
Originally posted by: MudMerc
Hey! I have the AC 400 fis manual tran, it makes a knock while it is idling. The noise seems to be from the bottom of the engine, or there about, not sure what it is. Also I have noticed a chattering type of noise while riding, when I hit the throttle to speed up. I only notice this until the rpm's of the engine are reved a bit, sorry no tac to get actual rpm's.
Can anyone tell me what this is and should I worry about it.
Hey! I have the AC 400 fis manual tran, it makes a knock while it is idling. The noise seems to be from the bottom of the engine, or there about, not sure what it is. Also I have noticed a chattering type of noise while riding, when I hit the throttle to speed up. I only notice this until the rpm's of the engine are reved a bit, sorry no tac to get actual rpm's.
Can anyone tell me what this is and should I worry about it.
#5
AC 400 fis knock noise at idle
I have the similar noise on my 03 400I manual trans. It was much worse when it was newer than it is now. I also noticed it more after I adjusted the valves around 1000 mile mark. I now have approximately 1600miles and don't notice it any more unless I am towing something heavy. Its still there I just don't notice it.
I origianally thought it might be my clutch slipping when it was new and called the dealer. They said it was the compression valve and its normal. I have also heard that they have quited it down on newer models but I am not 100% sure on that.
If your machine is still under warranty I would take it to the dealer and have them look at it. Which would not cost you much but the time and would give you a liitle piece of mind about the noise.
SJ
I origianally thought it might be my clutch slipping when it was new and called the dealer. They said it was the compression valve and its normal. I have also heard that they have quited it down on newer models but I am not 100% sure on that.
If your machine is still under warranty I would take it to the dealer and have them look at it. Which would not cost you much but the time and would give you a liitle piece of mind about the noise.
SJ
#6
AC 400 fis knock noise at idle
Thanks for the imput doober ArcticBrat and swampyjunior.
Yes it still has 1¼ years on the warranty, with about 900 KM's. I was beginning to think I bought a lemon glad to see that this sound is common and normal for most cats. I'll
still bring it to the dealer and see if they can shine some light on the noise. It's do for an oil change and going over anyway.
If they have any additional info on the noise I'll post it where everyone can see it.
AC never enough mud!!
Yes it still has 1¼ years on the warranty, with about 900 KM's. I was beginning to think I bought a lemon glad to see that this sound is common and normal for most cats. I'll
still bring it to the dealer and see if they can shine some light on the noise. It's do for an oil change and going over anyway.
If they have any additional info on the noise I'll post it where everyone can see it.
AC never enough mud!!
#7
Trending Topics
#8
AC 400 fis knock noise at idle
I had a knocking sound in my '01 AC 400 manual. I could really hear it when I unscrewed the oil fill cap. A biker buddy told me to put Risolone in the oil. That helped...for awhile. I mentioned it to the dealer when I took the machine in for routine maintenance. He increased the idle speed and put in synthetic oil. No more knocking.
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)