New K8 rattle

My K8 Sport is just about run in and since new has had a rather annoying rattle which comes from the front of the engine. I don't think it's mechanical-in fact it sounds like wire mesh vibrating which makes me think it might be the radiator cover or possibly the fairing lower.

i mentioned it to the dealer on the first service but he said that everything seemed normal. It's very loud to the point of being intrusive and I was hoping it would stop as everything loosened up during run-in but it's as bad as ever. I'm reluctant to take a spanner to all the fasteners as I don't know the torgue settings and was wondering if this was a common problem?

I've said it once, I'll say it again, it's under warranty. Take it back & complain again that you don't think it's right.

My K6 has never had a rattle since new.

Baph is right; if your not convinced, demand it checked. It may just be one of those noises that seems like something is wrong but really nothing is.

Or it could be something about to go terminal. You don't know, we don't know, but the dealer might find something and then know.

Could you take it to another place? Independant garage or something? Let a more experianced friend take it for a ride and see if they can hear anything?

Can I ask, is it an engine rpm related noise i.e. is it a noise that occurs at a particular rpm (or rpm range), does it get louder with rpm, or does it not really matter what the engine speed is?

Matt

Originally Posted by alpinestarhero

Baph is right; if your not convinced, demand it checked. It may just be one of those noises that seems like something is wrong but really nothing is.

Or it could be something about to go terminal. You don't know, we don't know, but the dealer might find something and then know.

Could you take it to another place? Independant garage or something? Let a more experianced friend take it for a ride and see if they can hear anything?

Can I ask, is it an engine rpm related noise i.e. is it a noise that occurs at a particular rpm (or rpm range), does it get louder with rpm, or does it not really matter what the engine speed is?

Matt

It doesn't happen when I rev the engine in neutral, only when moving after about 3,000 rpm.

[fizzwheel]

Does the frequency of the rattle increase with road speed or engine speed. Or does it stay static ?

Originally Posted by fizzwheel

Does the frequency of the rattle increase with road speed or engine speed. Or does it stay static ?

It increases in line with revs. I'm convinced it's simply something loose which is vibrating but it's impossible to tie it down because it only does it on the move.

[fizzwheel]

What sort of state is your chain in ?

Originally Posted by fizzwheel

What sort of state is your chain in ?

Less than 1,000 miles with a scottoiler so it's as good as new. The noise is definitely coming from the front of the engine. As I said, it sounds like wire mesh vibrating so my suspicion is either the radiator cover or the grill on the oil cooler.

[fizzwheel]

I've heard of tight spots on a chain making noises like you describe which is why I asked, might be worth just double checking the tension just to make sure.

It could just be a rattle camchain tensioner. But I'm not 100% sure. If it were me I'd take it back to the dealer and get them to have another look at it. Its still under warranty...

No need for a tool to check if those (cooler covers) are loose.

Odd that it would increase not with road speed, but with rpm, although not at a standstill. It rules out a lot of things.

Still, if I were you I'd have a good poke round. Get your manual (or Haynes) out, lift the tank (easy), have a look at stuff, see if anything's obviously amiss. If it still does it when you put it all back together, you'll at least know it's probably not something trivial when you take it back to the dealererer.