ticking

[rav4t]

I was wondering if anyone knows why my 2002 SC does a ticking noise when the engine is running.

[ChuckH]

Hard to know without hearing it. Some mild ticking is just normal mechanical noise. If you have ticking that is more pronounced when cold you might have a cracked manifold.

[RAREROD74]

if your always on time with your oil changes than I would say your are hearing the fuel injectors if not check your dip stick if any varnish is present that you may have a build up of sluge in the crank case this causes premature wear hopfuly this is not the case.