Video of noise
I'm trying to diagnose where a noise is emitting from when I cold start my car. The noise goes within seconds of the engine starting and isn't apparent when fully warmed up or during hot re-starts.
The sound can only be described as a rod or piston wanting to jump out of the engine, but only on cold start ups? From the driving seat it sounds like it's coming from the intake side of the engine. The car drives perfectly fine, and boosts well.
It's almost like the engine wants to throw something off that is loosely bolted to it?
Things I've quickly checked:
The exhaust seems to have no excessive play in it but I've not had it in the air yet.
I did a compression test and results were fine cylinders 1-4 resulted with 192, 196, 189, 191 psi.
All spark plugs are a nice tan colour.
I've checked the crank pulley for wobble.
I've also checked the throttle body butterfly on Richy's advice for impending implosion and it's rock solid with zero play.
I've checked the intake manifold and brace bar.
Things to check:
Alternator being secure to block?
During the compression test, the starter sounded really rough and weak when rotating the engine.
Basically tell me that it's NOT big ends or some other major engine internal and I'll love you for a bit.