cold engine start clicking noise, what is it?

[paulmars]

I replaced my fuel filter on my 2004 2.4L tacoma 2wd. 65k miles. At the same time I checked the valves. No valve adjustment needed. Now I hear 4 to 6 rapid metallic clicks when i start the engine cold. Once it happened when it was warm. This fuel filter is not original equipment.

ideas?

tks,
pa

 

[cam1526]

My truck wouldn't start and it died when I gave it gas when it did start but turned out it was just the efi relay messing up maybe look at that