Knock on Cold Startup

[vs_commy5506]

Occasionally i get a knock noise when i start up my engine in the morning or afternoon as soon as the engine kicks over? anyone have a clue?

Cheers

 

[Sickness]

I had a bit of a knock when starting about a week after I bought my VS. Ended up having 2 cracked plugs. One idea anyway. check leads and plugs for faults causing missfire.

 

[centy]

oil change first.
check plugs and leads.
Hope like hell it's not the first sign of a worn bottom end.

 

[hako]

Probably just a bit of piston slap...most Commodores are getting on - but as centy says give it an oil change (unless it's recently had one)

 

[vs_commy5506]

recently has had new plugs and oli change so i dunno, not to worried, if my bottom end is ****ed ill just buy a new ecotech lol

 

[centy]

grab the balancer and try to move the crank up and down a little.
I have seen them bad enough to to do that and still run.

 

[haloeight]

Good chance its the engine mounts.

 

[KOMNHOR]

i doubt it. if so why cold only? check your studs on exhaust manifold one might b snapped same thing happened wit my mates vt