Rattle when accelerating

[thefletch]

Hi,

Just got my 182 about a month ago, its a 54 plate, 53000 miles.

The problem (if it is one) is that when i accelerate at about 50% or more throttle and over about 2.5-3k rpm there's a rattle noise from the engine, not that loud but obvious enough.
It sounds a cross between a blowing exhaust and a bearing possibly, bt quite distinctively metallic and mechanical.

Any ideas?

Theres no other problems except its in need of a cambelt service.

Fletch

P.S. i used the search tool before posting.

 

[Triki]

Are you sure its not the downpipe > cat gasket blowing ? Or possibly the centre exhaust section baffles rattling.

They are two fav's

 

[mag1caltrev0r]

My 172 did the same and it was the engine mounts completely shot causing the engine to drop so the exhaust manifold rattled on the chassis.

Could also be a loose heat shield

 

[thefletch]

Hmm, i'll have a look, how will I know if they are shot or not?

My last car (RX8) had a similar issue and the only way to know was to measure it and theres only a few mm between good n bad.

 

[Joe R26]

i've got the same thing and its the down pipe to cat joint, its either blowing or the bolts are rattling

 

[Adz172]

Mine was the bolts that hold the down pipe to cat, put some exhaust gunk around as its a right pain to get into tighten, problem solved. Try that

 

[thefletch]

thanks gents, will have a look tomorrow as the cars will be jacked up anyway.