fuel injectors clicking.

[bewst pewp]

for some reason my fuel injectors started clicking rather loudly right when the car is started lately. I've owned 2 other sr's and they've never seemes to do it. Other than that there is no problem and the car still runs great.

s13 sr20det stock injectors, redtop+cooling fins

Basically just curious as to if this is normal or a sign they
re going on the way out.

any help or insight would be great thx guys