Checking for CCT trouble
#1
Checking for CCT trouble
So I'm checking out a an 04 F4i with 9000 miles tomorrow and I'd like to be able to tell if the CCT is in order. I've heard the problem manifests itself as a rattle at around 5000 RPM. Is this right? Can anyone be more specific as to what I'm listening for?
(Search on this forum doesn't seem to be working right now...)
(Search on this forum doesn't seem to be working right now...)
#2
RE: Checking for CCT trouble
People frequently refer to it as bolts in a tin can - I'd say it's more of a metallic SHHHHH sound from 3-5K - It goes away if you rev it up past that point - and I never hear it any lower. - I also can't seem to replicate it just sitting in neutral (though I haven't tried extensively) - It definitely shows up if you keep it in 1st through that range though.
I just can't decide if it's worth fixing or just live with it - it is a little annoying when driving, but if it doesn't cause engine troubles, I have plenty other upgrades I'd rather spend my $ on...
I just can't decide if it's worth fixing or just live with it - it is a little annoying when driving, but if it doesn't cause engine troubles, I have plenty other upgrades I'd rather spend my $ on...
#3
#4
RE: Checking for CCT trouble
I'll play with it tonight at home and post what I find (that is if someone else doesn't chime in first =-)
My theory... - It has to do with the harmonics of the engine's crankshaft vs. the harmonics of the camshaft - I believe the crankshaft would vibrate differently if it has all the transmission gears moving along with it.
Load could be a factor, I'll rev it up to 3-5K and gently load the engine by letting off the clutch (try not blast through the neighbors' fence) and see if the noise magically appears with load...
My theory... - It has to do with the harmonics of the engine's crankshaft vs. the harmonics of the camshaft - I believe the crankshaft would vibrate differently if it has all the transmission gears moving along with it.
Load could be a factor, I'll rev it up to 3-5K and gently load the engine by letting off the clutch (try not blast through the neighbors' fence) and see if the noise magically appears with load...
#6
#7
RE: Checking for CCT trouble
Do they make a manual cct for the F4I. I think I need one too but can't not find a manual one anywhere. Sorry I'm not trying to highjack this thread, just preventing starting a new real similiar one. thanks
[IMG]local://upfiles/13947/5171BF0A87D940FAA5D79F6127F9A6A2.jpg[/IMG]
[IMG]local://upfiles/13947/5171BF0A87D940FAA5D79F6127F9A6A2.jpg[/IMG]
#8
RE: Checking for CCT trouble
http://cbrworld.net/forums/thread/85183.aspx
Full instructions for replacing it...(including where to get the APE one)
Full instructions for replacing it...(including where to get the APE one)
#9