Cold start noise

[fireflytyer]

Herd a strange noise when I started my 60 when it was about 28' in south texas last week. When it warmed up it went away. Any ideas what it was?

 

[batman]

What did it sould like? do you know what part of the cruiser it came from, was it a knocking sound, or a high pitch squeal or ting. Details son details... Other wise it was the fan motor in the muffler...

 

[fireflytyer]

Sorry I forgot that part. The noise I herd sounded like a low pitch howl around the exhaust manifold.

 

[batman]

Sorry I forgot that part. The noise I herd sounded like a low pitch howl around the exhaust manifold.

Was it a one time thing or does it do it everytime? Need more information. How long does it last, does it worsen when you give it gas, stuff like that..