Buzzing sound when hot and under acceleration

[steved0x]

Exhaust would be my guess as well, but I have heard that a loose spark plug can generate a buzzing type sound as well.

[Crib]

Anything that shifts in size with higher temp and creates a self resonance at a certain vibration speed.

Does it reoccur if you stand still in neutral and increase throttle slowly throughout the register? Does it make different sounds depending on the surface quality, rougher tarmac etc?

It could be a heat shield, something inside exhaust system for sure.

[kenbefound]

Originally Posted by Crib

Anything that shifts in size with higher temp and creates a self resonance at a certain vibration speed.

Does it reoccur if you stand still in neutral and increase throttle slowly throughout the register? Does it make different sounds depending on the surface quality, rougher tarmac etc?

It could be a heat shield, something inside exhaust system for sure.

I'll take it out this weekend to do a more thorough analysis, thanks!

[Luckyed]

+1 on the heat shield

[kenbefound]

Originally Posted by steved0x

Exhaust would be my guess as well, but I have heard that a loose spark plug can generate a buzzing type sound as well.

Looked into 3rd party exhaust packages but they're all uber expensive