Dumb question.. What exactly causes the “ticking” noise with broken exhaust manifold bolts.

[Condor757]

Have been curious about this for a long time… what exactly causes the “tick”. Is it from a loose bolt moving around or Something else?
thx

 

[Idahoktm]

The sound of high pressure exhaust squeezing out through the gaps. It ticks because the exhaust manifold is only under pressure briefly during the exhaust cycle.

 

[bigdodge]

Have been curious about this for a long time… what exactly causes the “tick”. Is it from a loose bolt moving around or Something else?
thx

most of the time a bolt breaks.

 

[Condor757]

The sound of high pressure exhaust squeezing out through the gaps. It ticks because the exhaust manifold is only under pressure briefly during the exhaust cycle.

Makes perfect sense.. thx!