Firstfives.org

I have this tic tic tic from the engine, the frequency of the tics is related to the revs of the engine.
Can't tell where is coming from, it is not from the valves ,it doesn't seem to come from the head .
looks like it is coming from the intake manifold (injectors area), and I can feel them on fuel hose that feeds the cold star injector.and also on the feeding fuel line
Anybody knows what can this be?

You say it's not valves. How can you be sure? Sounds are tricky to pinpoint. If it hasn't been done very recently, adjust the valves and see if it goes away.

KenB
1980 528i

How's the engine functioning right now? Enough power? From what I've experienced, it are (most of the times) the valves. Injectors can also make a lot of noise. Sometimes it can be difficult to know for sure whether it is abnormal or not.

What I would do is follow KenB's advice and check the valve clearances just to be sure. You could also check if the injectors work properly (or work at all) by using a screwdriver. Put the screwdriver near the injector, keep your ear against the screwdriver and listen.

Good luck.