i know that an irregular clicking at start up means that i need a valve adjustment, but i just did one. i finished up with my complete engine rebuild yesterday and the last thing i did was a valve adjustment. all the valves were within specs. what else could this clicking noise be? it sounds like its coming from the fuel rail/area around the fuel rail.

any suggestions?

 

could be anything from injectors to piston slap.....especially if it's a fresh engine build. My last build, I went a little looser on piston to wall clearances, and have slight slappage on cold start for about a minute

 

is a serious problem though? should i just drive it and see if it gets better or worse?

 

all depends on the ticking.....

just hope it's not a rod knock or anything. I don't know what you did to rebuild it....

DOes it go away with temp, or stay constant?

 

it gets quieter when the engine warms up yeah, but it is still there. its been so long since i heard my motor i dont remember what it sounded like..

whats rod knock?