scary ticking noise that comes and goes..

[jshouse]

I am guessing, but I would run a vacuum line right to the EGR valve. Activating and deactivating it and listening to your noise. Sound like when it comes up to operating temperature it turns the EGR valve on.

I looked at your year 79, that had vacuum EGR.
A LS1 uses that sparky electrical stuff! so my dumb Idea will not work

lol, no big deal..thanks for the help

[TXsilverado]

my motor ticks too! i don't know what it is though. is still runs good though?

thats probably a normal tick..a quiet tapping that you gotta listen for....i call the new motors chevy sewing machines. you can hear injectors and little sewing machine stuff haha.

[ChevyBeast05']

ive got a tickin gnoise to but only when i get up in high rpm bands but im preatty sure its an exhaust leak but good luck on finding what it is

[Botlfed]

PSST!! this thread is 4 months old.....hahaha sorry man.

[Riceeater]

How do you remove the EGR?

[Botlfed]

have it tuned out..... then smash the end and roll it back on itself. there might be a less destructive way but this does work.

or if you have one with a set of headers have it tuned out then just block it off or do like moze and put a beer bottle lid over the hole and bolt it down... wish i had pics of that.

[Riceeater]

Thanks im glad I fond out before I got the tune.

[Botlfed]